diff --git a/scripts/benchmark.ts b/scripts/benchmark.ts
index fcfc67bf7..321b07c94 100644
--- a/scripts/benchmark.ts
+++ b/scripts/benchmark.ts
@@ -1,19 +1,10 @@
-import { registerTSPaths } from '../server/helpers/register-ts-paths'
-registerTSPaths()
-
 import * as autocannon from 'autocannon'
-import {
-  addVideoCommentReply,
-  addVideoCommentThread,
-  flushAndRunServer,
-  getVideosList,
-  killallServers,
-  ServerInfo,
-  setAccessTokensToServers,
-  uploadVideo
-} from '@shared/extra-utils'
-import { Video, VideoPrivacy } from '@shared/models'
 import { writeJson } from 'fs-extra'
+import { flushAndRunServer, getVideosList, killallServers, ServerInfo, setAccessTokensToServers, uploadVideo } from '@shared/extra-utils'
+import { Video, VideoPrivacy } from '@shared/models'
+import { registerTSPaths } from '../server/helpers/register-ts-paths'
+
+registerTSPaths()
 
 let server: ServerInfo
 let video: Video
@@ -228,18 +219,17 @@ async function prepare () {
 
   for (let i = 0; i < 10; i++) {
     const text = 'my super first comment'
-    const res = await addVideoCommentThread(server.url, server.accessToken, video.id, text)
-    threadId = res.body.comment.id
+    const created = await server.commentsCommand.createThread({ videoId: video.id, text })
+    threadId = created.id
 
     const text1 = 'my super answer to thread 1'
-    const childCommentRes = await addVideoCommentReply(server.url, server.accessToken, video.id, threadId, text1)
-    const childCommentId = childCommentRes.body.comment.id
+    const child = await server.commentsCommand.addReply({ videoId: video.id, toCommentId: threadId, text: text1 })
 
     const text2 = 'my super answer to answer of thread 1'
-    await addVideoCommentReply(server.url, server.accessToken, video.id, childCommentId, text2)
+    await server.commentsCommand.addReply({ videoId: video.id, toCommentId: child.id, text: text2 })
 
     const text3 = 'my second answer to thread 1'
-    await addVideoCommentReply(server.url, server.accessToken, video.id, threadId, text3)
+    await server.commentsCommand.addReply({ videoId: video.id, toCommentId: threadId, text: text3 })
   }
 
   for (const caption of [ 'ar', 'fr', 'en', 'zh' ]) {
diff --git a/server/controllers/api/videos/comment.ts b/server/controllers/api/videos/comment.ts
index e6f28c1cb..6a25511e5 100644
--- a/server/controllers/api/videos/comment.ts
+++ b/server/controllers/api/videos/comment.ts
@@ -1,7 +1,7 @@
 import * as express from 'express'
 import { HttpStatusCode } from '../../../../shared/core-utils/miscs/http-error-codes'
-import { ResultList, ThreadsResultList, UserRight } from '../../../../shared/models'
-import { VideoCommentCreate } from '../../../../shared/models/videos/comment/video-comment.model'
+import { ResultList, ThreadsResultList, UserRight, VideoCommentCreate } from '../../../../shared/models'
+import { VideoCommentThreads } from '../../../../shared/models/videos/comment/video-comment.model'
 import { auditLoggerFactory, CommentAuditView, getAuditIdFromRes } from '../../../helpers/audit-logger'
 import { getFormattedObjects } from '../../../helpers/utils'
 import { sequelizeTypescript } from '../../../initializers/database'
@@ -136,7 +136,7 @@ async function listVideoThreads (req: express.Request, res: express.Response) {
   return res.json({
     ...getFormattedObjects(resultList.data, resultList.total),
     totalNotDeletedComments: resultList.totalNotDeletedComments
-  })
+  } as VideoCommentThreads)
 }
 
 async function listVideoThreadComments (req: express.Request, res: express.Response) {
diff --git a/server/lib/moderation.ts b/server/lib/moderation.ts
index 14e00518e..a42ab5b7f 100644
--- a/server/lib/moderation.ts
+++ b/server/lib/moderation.ts
@@ -23,7 +23,7 @@ import { ActivityCreate } from '../../shared/models/activitypub'
 import { VideoObject } from '../../shared/models/activitypub/objects'
 import { VideoCommentObject } from '../../shared/models/activitypub/objects/video-comment-object'
 import { LiveVideoCreate, VideoCreate, VideoImportCreate } from '../../shared/models/videos'
-import { VideoCommentCreate } from '../../shared/models/videos/comment/video-comment.model'
+import { VideoCommentCreate } from '../../shared/models/videos/comment'
 import { ActorModel } from '../models/actor/actor'
 import { UserModel } from '../models/user/user'
 import { VideoModel } from '../models/video/video'
diff --git a/server/tests/api/activitypub/cleaner.ts b/server/tests/api/activitypub/cleaner.ts
index 75ef56ce3..27f17b4d6 100644
--- a/server/tests/api/activitypub/cleaner.ts
+++ b/server/tests/api/activitypub/cleaner.ts
@@ -7,16 +7,19 @@ import {
   closeAllSequelize,
   deleteAll,
   doubleFollow,
+  flushAndRunMultipleServers,
   getCount,
+  getVideo,
+  rateVideo,
   selectQuery,
+  ServerInfo,
+  setAccessTokensToServers,
   setVideoField,
   updateQuery,
-  wait
-} from '../../../../shared/extra-utils'
-import { flushAndRunMultipleServers, ServerInfo, setAccessTokensToServers } from '../../../../shared/extra-utils/index'
-import { waitJobs } from '../../../../shared/extra-utils/server/jobs'
-import { addVideoCommentThread, getVideoCommentThreads } from '../../../../shared/extra-utils/videos/video-comments'
-import { getVideo, rateVideo, uploadVideoAndGetId } from '../../../../shared/extra-utils/videos/videos'
+  uploadVideoAndGetId,
+  wait,
+  waitJobs
+} from '@shared/extra-utils'
 
 const expect = chai.expect
 
@@ -63,7 +66,7 @@ describe('Test AP cleaner', function () {
     for (const server of servers) {
       for (const uuid of videoUUIDs) {
         await rateVideo(server.url, server.accessToken, uuid, 'like')
-        await addVideoCommentThread(server.url, server.accessToken, uuid, 'comment')
+        await server.commentsCommand.createThread({ videoId: uuid, text: 'comment' })
       }
     }
 
@@ -172,8 +175,8 @@ describe('Test AP cleaner', function () {
     this.timeout(20000)
 
     {
-      const res = await getVideoCommentThreads(servers[0].url, videoUUID1, 0, 5)
-      expect(res.body.total).to.equal(3)
+      const { total } = await servers[0].commentsCommand.listThreads({ videoId: videoUUID1 })
+      expect(total).to.equal(3)
     }
 
     await deleteAll(servers[2].internalServerNumber, 'videoComment')
@@ -182,8 +185,8 @@ describe('Test AP cleaner', function () {
     await waitJobs(servers)
 
     {
-      const res = await getVideoCommentThreads(servers[0].url, videoUUID1, 0, 5)
-      expect(res.body.total).to.equal(2)
+      const { total } = await servers[0].commentsCommand.listThreads({ videoId: videoUUID1 })
+      expect(total).to.equal(2)
     }
   })
 
diff --git a/server/tests/api/check-params/video-comments.ts b/server/tests/api/check-params/video-comments.ts
index a38420851..ff94645cb 100644
--- a/server/tests/api/check-params/video-comments.ts
+++ b/server/tests/api/check-params/video-comments.ts
@@ -2,9 +2,11 @@
 
 import 'mocha'
 import * as chai from 'chai'
-import { VideoCreateResult } from '@shared/models'
-import { HttpStatusCode } from '../../../../shared/core-utils/miscs/http-error-codes'
+import { HttpStatusCode } from '@shared/core-utils'
 import {
+  checkBadCountPagination,
+  checkBadSortPagination,
+  checkBadStartPagination,
   cleanupTests,
   createUser,
   flushAndRunServer,
@@ -15,13 +17,8 @@ import {
   setAccessTokensToServers,
   uploadVideo,
   userLogin
-} from '../../../../shared/extra-utils'
-import {
-  checkBadCountPagination,
-  checkBadSortPagination,
-  checkBadStartPagination
-} from '../../../../shared/extra-utils/requests/check-api-params'
-import { addVideoCommentThread } from '../../../../shared/extra-utils/videos/video-comments'
+} from '@shared/extra-utils'
+import { VideoCreateResult } from '@shared/models'
 
 const expect = chai.expect
 
@@ -50,8 +47,8 @@ describe('Test video comments API validator', function () {
     }
 
     {
-      const res = await addVideoCommentThread(server.url, server.accessToken, video.uuid, 'coucou')
-      commentId = res.body.comment.id
+      const created = await server.commentsCommand.createThread({ videoId: video.uuid, text: 'coucou' })
+      commentId = created.id
       pathComment = '/api/v1/videos/' + video.uuid + '/comments/' + commentId
     }
 
@@ -281,8 +278,8 @@ describe('Test video comments API validator', function () {
       let commentToDelete: number
 
       {
-        const res = await addVideoCommentThread(server.url, userAccessToken, video.uuid, 'hello')
-        commentToDelete = res.body.comment.id
+        const created = await server.commentsCommand.createThread({ videoId: video.uuid, text: 'hello' })
+        commentToDelete = created.id
       }
 
       const path = '/api/v1/videos/' + video.uuid + '/comments/' + commentToDelete
@@ -301,8 +298,8 @@ describe('Test video comments API validator', function () {
       }
 
       {
-        const res = await addVideoCommentThread(server.url, server.accessToken, anotherVideoUUID, 'hello')
-        commentToDelete = res.body.comment.id
+        const created = await server.commentsCommand.createThread({ videoId: anotherVideoUUID, text: 'hello' })
+        commentToDelete = created.id
       }
 
       const path = '/api/v1/videos/' + anotherVideoUUID + '/comments/' + commentToDelete
diff --git a/server/tests/api/moderation/abuses.ts b/server/tests/api/moderation/abuses.ts
index a2bd07b12..e428cf1a8 100644
--- a/server/tests/api/moderation/abuses.ts
+++ b/server/tests/api/moderation/abuses.ts
@@ -4,14 +4,11 @@ import 'mocha'
 import * as chai from 'chai'
 import {
   AbusesCommand,
-  addVideoCommentThread,
   cleanupTests,
   createUser,
-  deleteVideoComment,
   doubleFollow,
   flushAndRunMultipleServers,
   generateUserAccessToken,
-  getVideoCommentThreads,
   getVideoIdFromUUID,
   getVideosList,
   removeUser,
@@ -23,7 +20,7 @@ import {
   userLogin,
   waitJobs
 } from '@shared/extra-utils'
-import { AbuseMessage, AbusePredefinedReasonsString, AbuseState, AdminAbuse, UserAbuse, VideoComment } from '@shared/models'
+import { AbuseMessage, AbusePredefinedReasonsString, AbuseState, AdminAbuse, UserAbuse } from '@shared/models'
 
 const expect = chai.expect
 
@@ -399,14 +396,14 @@ describe('Test abuses', function () {
 
   describe('Comment abuses', function () {
 
-    async function getComment (url: string, videoIdArg: number | string) {
+    async function getComment (server: ServerInfo, videoIdArg: number | string) {
       const videoId = typeof videoIdArg === 'string'
-        ? await getVideoIdFromUUID(url, videoIdArg)
+        ? await getVideoIdFromUUID(server.url, videoIdArg)
         : videoIdArg
 
-      const res = await getVideoCommentThreads(url, videoId, 0, 5)
+      const { data } = await server.commentsCommand.listThreads({ videoId })
 
-      return res.body.data[0] as VideoComment
+      return data[0]
     }
 
     before(async function () {
@@ -415,8 +412,8 @@ describe('Test abuses', function () {
       servers[0].video = await uploadVideoAndGetId({ server: servers[0], videoName: 'server 1' })
       servers[1].video = await uploadVideoAndGetId({ server: servers[1], videoName: 'server 2' })
 
-      await addVideoCommentThread(servers[0].url, servers[0].accessToken, servers[0].video.id, 'comment server 1')
-      await addVideoCommentThread(servers[1].url, servers[1].accessToken, servers[1].video.id, 'comment server 2')
+      await servers[0].commentsCommand.createThread({ videoId: servers[0].video.id, text: 'comment server 1' })
+      await servers[1].commentsCommand.createThread({ videoId: servers[1].video.id, text: 'comment server 2' })
 
       await waitJobs(servers)
     })
@@ -424,7 +421,7 @@ describe('Test abuses', function () {
     it('Should report abuse on a comment', async function () {
       this.timeout(15000)
 
-      const comment = await getComment(servers[0].url, servers[0].video.id)
+      const comment = await getComment(servers[0], servers[0].video.id)
 
       const reason = 'it is a bad comment'
       await commands[0].report({ commentId: comment.id, reason })
@@ -434,7 +431,7 @@ describe('Test abuses', function () {
 
     it('Should have 1 comment abuse on server 1 and 0 on server 2', async function () {
       {
-        const comment = await getComment(servers[0].url, servers[0].video.id)
+        const comment = await getComment(servers[0], servers[0].video.id)
         const body = await commands[0].getAdminList({ filter: 'comment' })
 
         expect(body.total).to.equal(1)
@@ -469,7 +466,7 @@ describe('Test abuses', function () {
     it('Should report abuse on a remote comment', async function () {
       this.timeout(10000)
 
-      const comment = await getComment(servers[0].url, servers[1].video.uuid)
+      const comment = await getComment(servers[0], servers[1].video.uuid)
 
       const reason = 'it is a really bad comment'
       await commands[0].report({ commentId: comment.id, reason })
@@ -478,7 +475,7 @@ describe('Test abuses', function () {
     })
 
     it('Should have 2 comment abuses on server 1 and 1 on server 2', async function () {
-      const commentServer2 = await getComment(servers[0].url, servers[1].video.id)
+      const commentServer2 = await getComment(servers[0], servers[1].video.id)
 
       {
         const body = await commands[0].getAdminList({ filter: 'comment' })
@@ -537,9 +534,9 @@ describe('Test abuses', function () {
     it('Should keep the comment abuse when deleting the comment', async function () {
       this.timeout(10000)
 
-      const commentServer2 = await getComment(servers[0].url, servers[1].video.id)
+      const commentServer2 = await getComment(servers[0], servers[1].video.id)
 
-      await deleteVideoComment(servers[0].url, servers[0].accessToken, servers[1].video.uuid, commentServer2.id)
+      await servers[0].commentsCommand.delete({ videoId: servers[1].video.uuid, commentId: commentServer2.id })
 
       await waitJobs(servers)
 
diff --git a/server/tests/api/moderation/blocklist-notification.ts b/server/tests/api/moderation/blocklist-notification.ts
index 5b9699816..a077d8739 100644
--- a/server/tests/api/moderation/blocklist-notification.ts
+++ b/server/tests/api/moderation/blocklist-notification.ts
@@ -3,7 +3,6 @@
 import 'mocha'
 import * as chai from 'chai'
 import {
-  addVideoCommentThread,
   cleanupTests,
   createUser,
   doubleFollow,
@@ -59,7 +58,11 @@ describe('Test blocklist', function () {
     }
 
     {
-      await addVideoCommentThread(servers[1].url, remoteUserToken, videoUUID, '@user2@' + servers[0].host + ' hello')
+      await servers[1].commentsCommand.createThread({
+        token: remoteUserToken,
+        videoId: videoUUID,
+        text: '@user2@' + servers[0].host + ' hello'
+      })
     }
 
     {
diff --git a/server/tests/api/moderation/blocklist.ts b/server/tests/api/moderation/blocklist.ts
index 1b8860571..00cb6c65c 100644
--- a/server/tests/api/moderation/blocklist.ts
+++ b/server/tests/api/moderation/blocklist.ts
@@ -3,55 +3,47 @@
 import 'mocha'
 import * as chai from 'chai'
 import {
-  addVideoCommentReply,
-  addVideoCommentThread,
   BlocklistCommand,
   cleanupTests,
+  CommentsCommand,
   createUser,
-  deleteVideoComment,
   doubleFollow,
-  findCommentId,
   flushAndRunMultipleServers,
   getUserNotifications,
-  getVideoCommentThreads,
   getVideosList,
   getVideosListWithToken,
-  getVideoThreadComments,
   ServerInfo,
   setAccessTokensToServers,
   uploadVideo,
   userLogin,
   waitJobs
 } from '@shared/extra-utils'
-import { UserNotification, UserNotificationType, Video, VideoComment, VideoCommentThreadTree } from '@shared/models'
+import { UserNotification, UserNotificationType, Video } from '@shared/models'
 
 const expect = chai.expect
 
-async function checkAllVideos (url: string, token: string) {
+async function checkAllVideos (server: ServerInfo, token: string) {
   {
-    const res = await getVideosListWithToken(url, token)
+    const res = await getVideosListWithToken(server.url, token)
 
     expect(res.body.data).to.have.lengthOf(5)
   }
 
   {
-    const res = await getVideosList(url)
+    const res = await getVideosList(server.url)
 
     expect(res.body.data).to.have.lengthOf(5)
   }
 }
 
-async function checkAllComments (url: string, token: string, videoUUID: string) {
-  const resThreads = await getVideoCommentThreads(url, videoUUID, 0, 25, '-createdAt', token)
+async function checkAllComments (server: ServerInfo, token: string, videoUUID: string) {
+  const { data } = await server.commentsCommand.listThreads({ videoId: videoUUID, start: 0, count: 25, sort: '-createdAt', token })
 
-  const allThreads: VideoComment[] = resThreads.body.data
-  const threads = allThreads.filter(t => t.isDeleted === false)
+  const threads = data.filter(t => t.isDeleted === false)
   expect(threads).to.have.lengthOf(2)
 
   for (const thread of threads) {
-    const res = await getVideoThreadComments(url, videoUUID, thread.id, token)
-
-    const tree: VideoCommentThreadTree = res.body
+    const tree = await server.commentsCommand.getThread({ videoId: videoUUID, threadId: thread.id, token })
     expect(tree.children).to.have.lengthOf(1)
   }
 }
@@ -61,10 +53,9 @@ async function checkCommentNotification (
   comment: { server: ServerInfo, token: string, videoUUID: string, text: string },
   check: 'presence' | 'absence'
 ) {
-  const resComment = await addVideoCommentThread(comment.server.url, comment.token, comment.videoUUID, comment.text)
-  const created = resComment.body.comment as VideoComment
-  const threadId = created.id
-  const createdAt = created.createdAt
+  const command = comment.server.commentsCommand
+
+  const { threadId, createdAt } = await command.createThread({ token: comment.token, videoId: comment.videoUUID, text: comment.text })
 
   await waitJobs([ mainServer, comment.server ])
 
@@ -75,7 +66,7 @@ async function checkCommentNotification (
   if (check === 'presence') expect(commentNotifications).to.have.lengthOf(1)
   else expect(commentNotifications).to.have.lengthOf(0)
 
-  await deleteVideoComment(comment.server.url, comment.token, comment.videoUUID, threadId)
+  await command.delete({ token: comment.token, videoId: comment.videoUUID, commentId: threadId })
 
   await waitJobs([ mainServer, comment.server ])
 }
@@ -90,6 +81,7 @@ describe('Test blocklist', function () {
   let userToken2: string
 
   let command: BlocklistCommand
+  let commentsCommand: CommentsCommand[]
 
   before(async function () {
     this.timeout(120000)
@@ -97,6 +89,9 @@ describe('Test blocklist', function () {
     servers = await flushAndRunMultipleServers(3)
     await setAccessTokensToServers(servers)
 
+    command = servers[0].blocklistCommand
+    commentsCommand = servers.map(s => s.commentsCommand)
+
     {
       const user = { username: 'user1', password: 'password' }
       await createUser({ url: servers[0].url, accessToken: servers[0].accessToken, username: user.username, password: user.password })
@@ -139,30 +134,33 @@ describe('Test blocklist', function () {
     await doubleFollow(servers[0], servers[2])
 
     {
-      const resComment = await addVideoCommentThread(servers[0].url, servers[0].accessToken, videoUUID1, 'comment root 1')
-      const resReply = await addVideoCommentReply(servers[0].url, userToken1, videoUUID1, resComment.body.comment.id, 'comment user 1')
-      await addVideoCommentReply(servers[0].url, servers[0].accessToken, videoUUID1, resReply.body.comment.id, 'comment root 1')
+      const created = await commentsCommand[0].createThread({ videoId: videoUUID1, text: 'comment root 1' })
+      const reply = await commentsCommand[0].addReply({
+        token: userToken1,
+        videoId: videoUUID1,
+        toCommentId: created.id,
+        text: 'comment user 1'
+      })
+      await commentsCommand[0].addReply({ videoId: videoUUID1, toCommentId: reply.id, text: 'comment root 1' })
     }
 
     {
-      const resComment = await addVideoCommentThread(servers[0].url, userToken1, videoUUID1, 'comment user 1')
-      await addVideoCommentReply(servers[0].url, servers[0].accessToken, videoUUID1, resComment.body.comment.id, 'comment root 1')
+      const created = await commentsCommand[0].createThread({ token: userToken1, videoId: videoUUID1, text: 'comment user 1' })
+      await commentsCommand[0].addReply({ videoId: videoUUID1, toCommentId: created.id, text: 'comment root 1' })
     }
 
     await waitJobs(servers)
-
-    command = servers[0].blocklistCommand
   })
 
   describe('User blocklist', function () {
 
     describe('When managing account blocklist', function () {
       it('Should list all videos', function () {
-        return checkAllVideos(servers[0].url, servers[0].accessToken)
+        return checkAllVideos(servers[0], servers[0].accessToken)
       })
 
       it('Should list the comments', function () {
-        return checkAllComments(servers[0].url, servers[0].accessToken, videoUUID1)
+        return checkAllComments(servers[0], servers[0].accessToken, videoUUID1)
       })
 
       it('Should block a remote account', async function () {
@@ -194,19 +192,26 @@ describe('Test blocklist', function () {
       })
 
       it('Should hide its comments', async function () {
-        const resThreads = await getVideoCommentThreads(servers[0].url, videoUUID1, 0, 25, '-createdAt', servers[0].accessToken)
+        const { data } = await commentsCommand[0].listThreads({
+          token: servers[0].accessToken,
+          videoId: videoUUID1,
+          start: 0,
+          count: 25,
+          sort: '-createdAt'
+        })
 
-        const threads: VideoComment[] = resThreads.body.data
-        expect(threads).to.have.lengthOf(1)
-        expect(threads[0].totalReplies).to.equal(1)
+        expect(data).to.have.lengthOf(1)
+        expect(data[0].totalReplies).to.equal(1)
 
-        const t = threads.find(t => t.text === 'comment user 1')
+        const t = data.find(t => t.text === 'comment user 1')
         expect(t).to.be.undefined
 
-        for (const thread of threads) {
-          const res = await getVideoThreadComments(servers[0].url, videoUUID1, thread.id, servers[0].accessToken)
-
-          const tree: VideoCommentThreadTree = res.body
+        for (const thread of data) {
+          const tree = await commentsCommand[0].getThread({
+            videoId: videoUUID1,
+            threadId: thread.id,
+            token: servers[0].accessToken
+          })
           expect(tree.children).to.have.lengthOf(0)
         }
       })
@@ -231,7 +236,7 @@ describe('Test blocklist', function () {
       })
 
       it('Should list all the videos with another user', async function () {
-        return checkAllVideos(servers[0].url, userToken1)
+        return checkAllVideos(servers[0], userToken1)
       })
 
       it('Should list blocked accounts', async function () {
@@ -264,32 +269,29 @@ describe('Test blocklist', function () {
         this.timeout(60000)
 
         {
-          await addVideoCommentThread(servers[1].url, userToken2, videoUUID3, 'comment user 2')
+          await commentsCommand[1].createThread({ token: userToken2, videoId: videoUUID3, text: 'comment user 2' })
           await waitJobs(servers)
 
-          await addVideoCommentThread(servers[0].url, servers[0].accessToken, videoUUID3, 'uploader')
+          await commentsCommand[0].createThread({ token: servers[0].accessToken, videoId: videoUUID3, text: 'uploader' })
           await waitJobs(servers)
 
-          const commentId = await findCommentId(servers[1].url, videoUUID3, 'uploader')
+          const commentId = await commentsCommand[1].findCommentId({ videoId: videoUUID3, text: 'uploader' })
           const message = 'reply by user 2'
-          const resReply = await addVideoCommentReply(servers[1].url, userToken2, videoUUID3, commentId, message)
-          await addVideoCommentReply(servers[1].url, servers[1].accessToken, videoUUID3, resReply.body.comment.id, 'another reply')
+          const reply = await commentsCommand[1].addReply({ token: userToken2, videoId: videoUUID3, toCommentId: commentId, text: message })
+          await commentsCommand[1].addReply({ videoId: videoUUID3, toCommentId: reply.id, text: 'another reply' })
 
           await waitJobs(servers)
         }
 
         // Server 2 has all the comments
         {
-          const resThreads = await getVideoCommentThreads(servers[1].url, videoUUID3, 0, 25, '-createdAt')
-          const threads: VideoComment[] = resThreads.body.data
+          const { data } = await commentsCommand[1].listThreads({ videoId: videoUUID3, count: 25, sort: '-createdAt' })
 
-          expect(threads).to.have.lengthOf(2)
-          expect(threads[0].text).to.equal('uploader')
-          expect(threads[1].text).to.equal('comment user 2')
+          expect(data).to.have.lengthOf(2)
+          expect(data[0].text).to.equal('uploader')
+          expect(data[1].text).to.equal('comment user 2')
 
-          const resReplies = await getVideoThreadComments(servers[1].url, videoUUID3, threads[0].id)
-
-          const tree: VideoCommentThreadTree = resReplies.body
+          const tree = await commentsCommand[1].getThread({ videoId: videoUUID3, threadId: data[0].id })
           expect(tree.children).to.have.lengthOf(1)
           expect(tree.children[0].comment.text).to.equal('reply by user 2')
           expect(tree.children[0].children).to.have.lengthOf(1)
@@ -298,20 +300,15 @@ describe('Test blocklist', function () {
 
         // Server 1 and 3 should only have uploader comments
         for (const server of [ servers[0], servers[2] ]) {
-          const resThreads = await getVideoCommentThreads(server.url, videoUUID3, 0, 25, '-createdAt')
-          const threads: VideoComment[] = resThreads.body.data
+          const { data } = await server.commentsCommand.listThreads({ videoId: videoUUID3, count: 25, sort: '-createdAt' })
 
-          expect(threads).to.have.lengthOf(1)
-          expect(threads[0].text).to.equal('uploader')
+          expect(data).to.have.lengthOf(1)
+          expect(data[0].text).to.equal('uploader')
 
-          const resReplies = await getVideoThreadComments(server.url, videoUUID3, threads[0].id)
+          const tree = await server.commentsCommand.getThread({ videoId: videoUUID3, threadId: data[0].id })
 
-          const tree: VideoCommentThreadTree = resReplies.body
-          if (server.serverNumber === 1) {
-            expect(tree.children).to.have.lengthOf(0)
-          } else {
-            expect(tree.children).to.have.lengthOf(1)
-          }
+          if (server.serverNumber === 1) expect(tree.children).to.have.lengthOf(0)
+          else expect(tree.children).to.have.lengthOf(1)
         }
       })
 
@@ -331,22 +328,19 @@ describe('Test blocklist', function () {
 
       it('Should display its comments on my video', async function () {
         for (const server of servers) {
-          const resThreads = await getVideoCommentThreads(server.url, videoUUID3, 0, 25, '-createdAt')
-          const threads: VideoComment[] = resThreads.body.data
+          const { data } = await server.commentsCommand.listThreads({ videoId: videoUUID3, count: 25, sort: '-createdAt' })
 
           // Server 3 should not have 2 comment threads, because server 1 did not forward the server 2 comment
           if (server.serverNumber === 3) {
-            expect(threads).to.have.lengthOf(1)
+            expect(data).to.have.lengthOf(1)
             continue
           }
 
-          expect(threads).to.have.lengthOf(2)
-          expect(threads[0].text).to.equal('uploader')
-          expect(threads[1].text).to.equal('comment user 2')
+          expect(data).to.have.lengthOf(2)
+          expect(data[0].text).to.equal('uploader')
+          expect(data[1].text).to.equal('comment user 2')
 
-          const resReplies = await getVideoThreadComments(server.url, videoUUID3, threads[0].id)
-
-          const tree: VideoCommentThreadTree = resReplies.body
+          const tree = await server.commentsCommand.getThread({ videoId: videoUUID3, threadId: data[0].id })
           expect(tree.children).to.have.lengthOf(1)
           expect(tree.children[0].comment.text).to.equal('reply by user 2')
           expect(tree.children[0].children).to.have.lengthOf(1)
@@ -359,7 +353,7 @@ describe('Test blocklist', function () {
       })
 
       it('Should display its comments', function () {
-        return checkAllComments(servers[0].url, servers[0].accessToken, videoUUID1)
+        return checkAllComments(servers[0], servers[0].accessToken, videoUUID1)
       })
 
       it('Should have a notification from a non blocked account', async function () {
@@ -385,11 +379,11 @@ describe('Test blocklist', function () {
     describe('When managing server blocklist', function () {
 
       it('Should list all videos', function () {
-        return checkAllVideos(servers[0].url, servers[0].accessToken)
+        return checkAllVideos(servers[0], servers[0].accessToken)
       })
 
       it('Should list the comments', function () {
-        return checkAllComments(servers[0].url, servers[0].accessToken, videoUUID1)
+        return checkAllComments(servers[0], servers[0].accessToken, videoUUID1)
       })
 
       it('Should block a remote server', async function () {
@@ -410,20 +404,19 @@ describe('Test blocklist', function () {
       })
 
       it('Should list all the videos with another user', async function () {
-        return checkAllVideos(servers[0].url, userToken1)
+        return checkAllVideos(servers[0], userToken1)
       })
 
       it('Should hide its comments', async function () {
         this.timeout(10000)
 
-        const resThreads = await addVideoCommentThread(servers[1].url, userToken2, videoUUID1, 'hidden comment 2')
-        const threadId = resThreads.body.comment.id
+        const { id } = await commentsCommand[1].createThread({ token: userToken2, videoId: videoUUID1, text: 'hidden comment 2' })
 
         await waitJobs(servers)
 
-        await checkAllComments(servers[0].url, servers[0].accessToken, videoUUID1)
+        await checkAllComments(servers[0], servers[0].accessToken, videoUUID1)
 
-        await deleteVideoComment(servers[1].url, userToken2, videoUUID1, threadId)
+        await commentsCommand[1].delete({ token: userToken2, videoId: videoUUID1, commentId: id })
       })
 
       it('Should not have notifications from blocked server', async function () {
@@ -460,11 +453,11 @@ describe('Test blocklist', function () {
       })
 
       it('Should display its videos', function () {
-        return checkAllVideos(servers[0].url, servers[0].accessToken)
+        return checkAllVideos(servers[0], servers[0].accessToken)
       })
 
       it('Should display its comments', function () {
-        return checkAllComments(servers[0].url, servers[0].accessToken, videoUUID1)
+        return checkAllComments(servers[0], servers[0].accessToken, videoUUID1)
       })
 
       it('Should have notification from unblocked server', async function () {
@@ -493,13 +486,13 @@ describe('Test blocklist', function () {
     describe('When managing account blocklist', function () {
       it('Should list all videos', async function () {
         for (const token of [ userModeratorToken, servers[0].accessToken ]) {
-          await checkAllVideos(servers[0].url, token)
+          await checkAllVideos(servers[0], token)
         }
       })
 
       it('Should list the comments', async function () {
         for (const token of [ userModeratorToken, servers[0].accessToken ]) {
-          await checkAllComments(servers[0].url, token, videoUUID1)
+          await checkAllComments(servers[0], token, videoUUID1)
         }
       })
 
@@ -537,10 +530,8 @@ describe('Test blocklist', function () {
 
       it('Should hide its comments', async function () {
         for (const token of [ userModeratorToken, servers[0].accessToken ]) {
-          const resThreads = await getVideoCommentThreads(servers[0].url, videoUUID1, 0, 20, '-createdAt', token)
-
-          let threads: VideoComment[] = resThreads.body.data
-          threads = threads.filter(t => t.isDeleted === false)
+          const { data } = await commentsCommand[0].listThreads({ videoId: videoUUID1, count: 20, sort: '-createdAt', token })
+          const threads = data.filter(t => t.isDeleted === false)
 
           expect(threads).to.have.lengthOf(1)
           expect(threads[0].totalReplies).to.equal(1)
@@ -549,9 +540,7 @@ describe('Test blocklist', function () {
           expect(t).to.be.undefined
 
           for (const thread of threads) {
-            const res = await getVideoThreadComments(servers[0].url, videoUUID1, thread.id, token)
-
-            const tree: VideoCommentThreadTree = res.body
+            const tree = await commentsCommand[0].getThread({ videoId: videoUUID1, threadId: thread.id, token })
             expect(tree.children).to.have.lengthOf(0)
           }
         }
@@ -624,7 +613,7 @@ describe('Test blocklist', function () {
 
       it('Should display its comments', async function () {
         for (const token of [ userModeratorToken, servers[0].accessToken ]) {
-          await checkAllComments(servers[0].url, token, videoUUID1)
+          await checkAllComments(servers[0], token, videoUUID1)
         }
       })
 
@@ -651,13 +640,13 @@ describe('Test blocklist', function () {
     describe('When managing server blocklist', function () {
       it('Should list all videos', async function () {
         for (const token of [ userModeratorToken, servers[0].accessToken ]) {
-          await checkAllVideos(servers[0].url, token)
+          await checkAllVideos(servers[0], token)
         }
       })
 
       it('Should list the comments', async function () {
         for (const token of [ userModeratorToken, servers[0].accessToken ]) {
-          await checkAllComments(servers[0].url, token, videoUUID1)
+          await checkAllComments(servers[0], token, videoUUID1)
         }
       })
 
@@ -686,14 +675,13 @@ describe('Test blocklist', function () {
       it('Should hide its comments', async function () {
         this.timeout(10000)
 
-        const resThreads = await addVideoCommentThread(servers[1].url, userToken2, videoUUID1, 'hidden comment 2')
-        const threadId = resThreads.body.comment.id
+        const { id } = await commentsCommand[1].createThread({ token: userToken2, videoId: videoUUID1, text: 'hidden comment 2' })
 
         await waitJobs(servers)
 
-        await checkAllComments(servers[0].url, servers[0].accessToken, videoUUID1)
+        await checkAllComments(servers[0], servers[0].accessToken, videoUUID1)
 
-        await deleteVideoComment(servers[1].url, userToken2, videoUUID1, threadId)
+        await commentsCommand[1].delete({ token: userToken2, videoId: videoUUID1, commentId: id })
       })
 
       it('Should not have notification from blocked instances by instance', async function () {
@@ -749,13 +737,13 @@ describe('Test blocklist', function () {
 
       it('Should list all videos', async function () {
         for (const token of [ userModeratorToken, servers[0].accessToken ]) {
-          await checkAllVideos(servers[0].url, token)
+          await checkAllVideos(servers[0], token)
         }
       })
 
       it('Should list the comments', async function () {
         for (const token of [ userModeratorToken, servers[0].accessToken ]) {
-          await checkAllComments(servers[0].url, token, videoUUID1)
+          await checkAllComments(servers[0], token, videoUUID1)
         }
       })
 
diff --git a/server/tests/api/notifications/comments-notifications.ts b/server/tests/api/notifications/comments-notifications.ts
index 13fcee843..ea6055386 100644
--- a/server/tests/api/notifications/comments-notifications.ts
+++ b/server/tests/api/notifications/comments-notifications.ts
@@ -3,14 +3,10 @@
 import 'mocha'
 import * as chai from 'chai'
 import {
-  addVideoCommentReply,
-  addVideoCommentThread,
   checkCommentMention,
   CheckerBaseParams,
   checkNewCommentOnMyVideo,
   cleanupTests,
-  getVideoCommentThreads,
-  getVideoThreadComments,
   MockSmtpServer,
   prepareNotificationsTest,
   ServerInfo,
@@ -18,13 +14,13 @@ import {
   uploadVideo,
   waitJobs
 } from '@shared/extra-utils'
-import { UserNotification, VideoCommentThreadTree } from '@shared/models'
+import { UserNotification } from '@shared/models'
 
 const expect = chai.expect
 
 describe('Test comments notifications', function () {
   let servers: ServerInfo[] = []
-  let userAccessToken: string
+  let userToken: string
   let userNotifications: UserNotification[] = []
   let emails: object[] = []
 
@@ -38,7 +34,7 @@ describe('Test comments notifications', function () {
 
     const res = await prepareNotificationsTest(2)
     emails = res.emails
-    userAccessToken = res.userAccessToken
+    userToken = res.userAccessToken
     servers = res.servers
     userNotifications = res.userNotifications
   })
@@ -51,7 +47,7 @@ describe('Test comments notifications', function () {
         server: servers[0],
         emails,
         socketNotifications: userNotifications,
-        token: userAccessToken
+        token: userToken
       }
     })
 
@@ -61,8 +57,8 @@ describe('Test comments notifications', function () {
       const resVideo = await uploadVideo(servers[0].url, servers[0].accessToken, { name: 'super video' })
       const uuid = resVideo.body.video.uuid
 
-      const resComment = await addVideoCommentThread(servers[0].url, servers[0].accessToken, uuid, 'comment')
-      const commentId = resComment.body.comment.id
+      const created = await servers[0].commentsCommand.createThread({ videoId: uuid, text: 'comment' })
+      const commentId = created.id
 
       await waitJobs(servers)
       await checkNewCommentOnMyVideo(baseParams, uuid, commentId, commentId, 'absence')
@@ -71,11 +67,11 @@ describe('Test comments notifications', function () {
     it('Should not send a new comment notification if I comment my own video', async function () {
       this.timeout(20000)
 
-      const resVideo = await uploadVideo(servers[0].url, userAccessToken, { name: 'super video' })
+      const resVideo = await uploadVideo(servers[0].url, userToken, { name: 'super video' })
       const uuid = resVideo.body.video.uuid
 
-      const resComment = await addVideoCommentThread(servers[0].url, userAccessToken, uuid, 'comment')
-      const commentId = resComment.body.comment.id
+      const created = await servers[0].commentsCommand.createThread({ token: userToken, videoId: uuid, text: 'comment' })
+      const commentId = created.id
 
       await waitJobs(servers)
       await checkNewCommentOnMyVideo(baseParams, uuid, commentId, commentId, 'absence')
@@ -84,28 +80,28 @@ describe('Test comments notifications', function () {
     it('Should not send a new comment notification if the account is muted', async function () {
       this.timeout(20000)
 
-      await servers[0].blocklistCommand.addToMyBlocklist({ token: userAccessToken, account: 'root' })
+      await servers[0].blocklistCommand.addToMyBlocklist({ token: userToken, account: 'root' })
 
-      const resVideo = await uploadVideo(servers[0].url, userAccessToken, { name: 'super video' })
+      const resVideo = await uploadVideo(servers[0].url, userToken, { name: 'super video' })
       const uuid = resVideo.body.video.uuid
 
-      const resComment = await addVideoCommentThread(servers[0].url, servers[0].accessToken, uuid, 'comment')
-      const commentId = resComment.body.comment.id
+      const created = await servers[0].commentsCommand.createThread({ videoId: uuid, text: 'comment' })
+      const commentId = created.id
 
       await waitJobs(servers)
       await checkNewCommentOnMyVideo(baseParams, uuid, commentId, commentId, 'absence')
 
-      await servers[0].blocklistCommand.removeFromMyBlocklist({ token: userAccessToken, account: 'root' })
+      await servers[0].blocklistCommand.removeFromMyBlocklist({ token: userToken, account: 'root' })
     })
 
     it('Should send a new comment notification after a local comment on my video', async function () {
       this.timeout(20000)
 
-      const resVideo = await uploadVideo(servers[0].url, userAccessToken, { name: 'super video' })
+      const resVideo = await uploadVideo(servers[0].url, userToken, { name: 'super video' })
       const uuid = resVideo.body.video.uuid
 
-      const resComment = await addVideoCommentThread(servers[0].url, servers[0].accessToken, uuid, 'comment')
-      const commentId = resComment.body.comment.id
+      const created = await servers[0].commentsCommand.createThread({ videoId: uuid, text: 'comment' })
+      const commentId = created.id
 
       await waitJobs(servers)
       await checkNewCommentOnMyVideo(baseParams, uuid, commentId, commentId, 'presence')
@@ -114,33 +110,31 @@ describe('Test comments notifications', function () {
     it('Should send a new comment notification after a remote comment on my video', async function () {
       this.timeout(20000)
 
-      const resVideo = await uploadVideo(servers[0].url, userAccessToken, { name: 'super video' })
+      const resVideo = await uploadVideo(servers[0].url, userToken, { name: 'super video' })
       const uuid = resVideo.body.video.uuid
 
       await waitJobs(servers)
 
-      await addVideoCommentThread(servers[1].url, servers[1].accessToken, uuid, 'comment')
+      await servers[1].commentsCommand.createThread({ videoId: uuid, text: 'comment' })
 
       await waitJobs(servers)
 
-      const resComment = await getVideoCommentThreads(servers[0].url, uuid, 0, 5)
-      expect(resComment.body.data).to.have.lengthOf(1)
-      const commentId = resComment.body.data[0].id
+      const { data } = await servers[0].commentsCommand.listThreads({ videoId: uuid })
+      expect(data).to.have.lengthOf(1)
 
+      const commentId = data[0].id
       await checkNewCommentOnMyVideo(baseParams, uuid, commentId, commentId, 'presence')
     })
 
     it('Should send a new comment notification after a local reply on my video', async function () {
       this.timeout(20000)
 
-      const resVideo = await uploadVideo(servers[0].url, userAccessToken, { name: 'super video' })
+      const resVideo = await uploadVideo(servers[0].url, userToken, { name: 'super video' })
       const uuid = resVideo.body.video.uuid
 
-      const resThread = await addVideoCommentThread(servers[0].url, servers[0].accessToken, uuid, 'comment')
-      const threadId = resThread.body.comment.id
+      const { id: threadId } = await servers[0].commentsCommand.createThread({ videoId: uuid, text: 'comment' })
 
-      const resComment = await addVideoCommentReply(servers[0].url, servers[0].accessToken, uuid, threadId, 'reply')
-      const commentId = resComment.body.comment.id
+      const { id: commentId } = await servers[0].commentsCommand.addReply({ videoId: uuid, toCommentId: threadId, text: 'reply' })
 
       await waitJobs(servers)
       await checkNewCommentOnMyVideo(baseParams, uuid, commentId, threadId, 'presence')
@@ -149,24 +143,23 @@ describe('Test comments notifications', function () {
     it('Should send a new comment notification after a remote reply on my video', async function () {
       this.timeout(20000)
 
-      const resVideo = await uploadVideo(servers[0].url, userAccessToken, { name: 'super video' })
+      const resVideo = await uploadVideo(servers[0].url, userToken, { name: 'super video' })
       const uuid = resVideo.body.video.uuid
       await waitJobs(servers)
 
       {
-        const resThread = await addVideoCommentThread(servers[1].url, servers[1].accessToken, uuid, 'comment')
-        const threadId = resThread.body.comment.id
-        await addVideoCommentReply(servers[1].url, servers[1].accessToken, uuid, threadId, 'reply')
+        const created = await servers[1].commentsCommand.createThread({ videoId: uuid, text: 'comment' })
+        const threadId = created.id
+        await servers[1].commentsCommand.addReply({ videoId: uuid, toCommentId: threadId, text: 'reply' })
       }
 
       await waitJobs(servers)
 
-      const resThread = await getVideoCommentThreads(servers[0].url, uuid, 0, 5)
-      expect(resThread.body.data).to.have.lengthOf(1)
-      const threadId = resThread.body.data[0].id
+      const { data } = await servers[0].commentsCommand.listThreads({ videoId: uuid })
+      expect(data).to.have.lengthOf(1)
 
-      const resComments = await getVideoThreadComments(servers[0].url, uuid, threadId)
-      const tree = resComments.body as VideoCommentThreadTree
+      const threadId = data[0].id
+      const tree = await servers[0].commentsCommand.getThread({ videoId: uuid, threadId })
 
       expect(tree.children).to.have.lengthOf(1)
       const commentId = tree.children[0].comment.id
@@ -177,10 +170,10 @@ describe('Test comments notifications', function () {
     it('Should convert markdown in comment to html', async function () {
       this.timeout(20000)
 
-      const resVideo = await uploadVideo(servers[0].url, userAccessToken, { name: 'cool video' })
+      const resVideo = await uploadVideo(servers[0].url, userToken, { name: 'cool video' })
       const uuid = resVideo.body.video.uuid
 
-      await addVideoCommentThread(servers[0].url, servers[0].accessToken, uuid, commentText)
+      await servers[0].commentsCommand.createThread({ videoId: uuid, text: commentText })
 
       await waitJobs(servers)
 
@@ -197,7 +190,7 @@ describe('Test comments notifications', function () {
         server: servers[0],
         emails,
         socketNotifications: userNotifications,
-        token: userAccessToken
+        token: userToken
       }
 
       await updateMyUser({
@@ -216,11 +209,10 @@ describe('Test comments notifications', function () {
     it('Should not send a new mention comment notification if I mention the video owner', async function () {
       this.timeout(10000)
 
-      const resVideo = await uploadVideo(servers[0].url, userAccessToken, { name: 'super video' })
+      const resVideo = await uploadVideo(servers[0].url, userToken, { name: 'super video' })
       const uuid = resVideo.body.video.uuid
 
-      const resComment = await addVideoCommentThread(servers[0].url, servers[0].accessToken, uuid, '@user_1 hello')
-      const commentId = resComment.body.comment.id
+      const { id: commentId } = await servers[0].commentsCommand.createThread({ videoId: uuid, text: '@user_1 hello' })
 
       await waitJobs(servers)
       await checkCommentMention(baseParams, uuid, commentId, commentId, 'super root name', 'absence')
@@ -232,8 +224,7 @@ describe('Test comments notifications', function () {
       const resVideo = await uploadVideo(servers[0].url, servers[0].accessToken, { name: 'super video' })
       const uuid = resVideo.body.video.uuid
 
-      const resComment = await addVideoCommentThread(servers[0].url, userAccessToken, uuid, '@user_1 hello')
-      const commentId = resComment.body.comment.id
+      const { id: commentId } = await servers[0].commentsCommand.createThread({ token: userToken, videoId: uuid, text: '@user_1 hello' })
 
       await waitJobs(servers)
       await checkCommentMention(baseParams, uuid, commentId, commentId, 'super root name', 'absence')
@@ -242,18 +233,17 @@ describe('Test comments notifications', function () {
     it('Should not send a new mention notification if the account is muted', async function () {
       this.timeout(10000)
 
-      await servers[0].blocklistCommand.addToMyBlocklist({ token: userAccessToken, account: 'root' })
+      await servers[0].blocklistCommand.addToMyBlocklist({ token: userToken, account: 'root' })
 
       const resVideo = await uploadVideo(servers[0].url, servers[0].accessToken, { name: 'super video' })
       const uuid = resVideo.body.video.uuid
 
-      const resComment = await addVideoCommentThread(servers[0].url, servers[0].accessToken, uuid, '@user_1 hello')
-      const commentId = resComment.body.comment.id
+      const { id: commentId } = await servers[0].commentsCommand.createThread({ videoId: uuid, text: '@user_1 hello' })
 
       await waitJobs(servers)
       await checkCommentMention(baseParams, uuid, commentId, commentId, 'super root name', 'absence')
 
-      await servers[0].blocklistCommand.removeFromMyBlocklist({ token: userAccessToken, account: 'root' })
+      await servers[0].blocklistCommand.removeFromMyBlocklist({ token: userToken, account: 'root' })
     })
 
     it('Should not send a new mention notification if the remote account mention a local account', async function () {
@@ -263,8 +253,7 @@ describe('Test comments notifications', function () {
       const uuid = resVideo.body.video.uuid
 
       await waitJobs(servers)
-      const resThread = await addVideoCommentThread(servers[1].url, servers[1].accessToken, uuid, '@user_1 hello')
-      const threadId = resThread.body.comment.id
+      const { id: threadId } = await servers[1].commentsCommand.createThread({ videoId: uuid, text: '@user_1 hello' })
 
       await waitJobs(servers)
       await checkCommentMention(baseParams, uuid, threadId, threadId, 'super root 2 name', 'absence')
@@ -276,14 +265,12 @@ describe('Test comments notifications', function () {
       const resVideo = await uploadVideo(servers[0].url, servers[0].accessToken, { name: 'super video' })
       const uuid = resVideo.body.video.uuid
 
-      const resThread = await addVideoCommentThread(servers[0].url, servers[0].accessToken, uuid, '@user_1 hello 1')
-      const threadId = resThread.body.comment.id
+      const { id: threadId } = await servers[0].commentsCommand.createThread({ videoId: uuid, text: '@user_1 hellotext:  1' })
 
       await waitJobs(servers)
       await checkCommentMention(baseParams, uuid, threadId, threadId, 'super root name', 'presence')
 
-      const resComment = await addVideoCommentReply(servers[0].url, servers[0].accessToken, uuid, threadId, 'hello 2 @user_1')
-      const commentId = resComment.body.comment.id
+      const { id: commentId } = await servers[0].commentsCommand.addReply({ videoId: uuid, toCommentId: threadId, text: 'hello 2 @user_1' })
 
       await waitJobs(servers)
       await checkCommentMention(baseParams, uuid, commentId, threadId, 'super root name', 'presence')
@@ -298,23 +285,22 @@ describe('Test comments notifications', function () {
       await waitJobs(servers)
 
       const text1 = `hello @user_1@localhost:${servers[0].port} 1`
-      const resThread = await addVideoCommentThread(servers[1].url, servers[1].accessToken, uuid, text1)
-      const server2ThreadId = resThread.body.comment.id
+      const { id: server2ThreadId } = await servers[1].commentsCommand.createThread({ videoId: uuid, text: text1 })
 
       await waitJobs(servers)
 
-      const resThread2 = await getVideoCommentThreads(servers[0].url, uuid, 0, 5)
-      expect(resThread2.body.data).to.have.lengthOf(1)
-      const server1ThreadId = resThread2.body.data[0].id
+      const { data } = await servers[0].commentsCommand.listThreads({ videoId: uuid })
+      expect(data).to.have.lengthOf(1)
+
+      const server1ThreadId = data[0].id
       await checkCommentMention(baseParams, uuid, server1ThreadId, server1ThreadId, 'super root 2 name', 'presence')
 
       const text2 = `@user_1@localhost:${servers[0].port} hello 2 @root@localhost:${servers[0].port}`
-      await addVideoCommentReply(servers[1].url, servers[1].accessToken, uuid, server2ThreadId, text2)
+      await servers[1].commentsCommand.addReply({ videoId: uuid, toCommentId: server2ThreadId, text: text2 })
 
       await waitJobs(servers)
 
-      const resComments = await getVideoThreadComments(servers[0].url, uuid, server1ThreadId)
-      const tree = resComments.body as VideoCommentThreadTree
+      const tree = await servers[0].commentsCommand.getThread({ videoId: uuid, threadId: server1ThreadId })
 
       expect(tree.children).to.have.lengthOf(1)
       const commentId = tree.children[0].comment.id
@@ -328,10 +314,9 @@ describe('Test comments notifications', function () {
       const resVideo = await uploadVideo(servers[0].url, servers[0].accessToken, { name: 'super video' })
       const uuid = resVideo.body.video.uuid
 
-      const resThread = await addVideoCommentThread(servers[0].url, servers[0].accessToken, uuid, '@user_1 hello 1')
-      const threadId = resThread.body.comment.id
+      const { id: threadId } = await servers[0].commentsCommand.createThread({ videoId: uuid, text: '@user_1 hello 1' })
 
-      await addVideoCommentReply(servers[0].url, servers[0].accessToken, uuid, threadId, '@user_1 ' + commentText)
+      await servers[0].commentsCommand.addReply({ videoId: uuid, toCommentId: threadId, text: '@user_1 ' + commentText })
 
       await waitJobs(servers)
 
diff --git a/server/tests/api/notifications/moderation-notifications.ts b/server/tests/api/notifications/moderation-notifications.ts
index 52ade0548..229f78811 100644
--- a/server/tests/api/notifications/moderation-notifications.ts
+++ b/server/tests/api/notifications/moderation-notifications.ts
@@ -3,7 +3,6 @@
 import 'mocha'
 import { buildUUID } from '@server/helpers/uuid'
 import {
-  addVideoCommentThread,
   checkAbuseStateChange,
   checkAutoInstanceFollowing,
   CheckerBaseParams,
@@ -20,7 +19,6 @@ import {
   cleanupTests,
   createUser,
   generateUserAccessToken,
-  getVideoCommentThreads,
   getVideoIdFromUUID,
   immutableAssign,
   MockInstancesIndex,
@@ -101,8 +99,11 @@ describe('Test moderation notifications', function () {
       const name = 'video for abuse ' + buildUUID()
       const resVideo = await uploadVideo(servers[0].url, userAccessToken, { name })
       const video = resVideo.body.video
-      const resComment = await addVideoCommentThread(servers[0].url, userAccessToken, video.id, 'comment abuse ' + buildUUID())
-      const comment = resComment.body.comment
+      const comment = await servers[0].commentsCommand.createThread({
+        token: userAccessToken,
+        videoId: video.id,
+        text: 'comment abuse ' + buildUUID()
+      })
 
       await waitJobs(servers)
 
@@ -118,12 +119,17 @@ describe('Test moderation notifications', function () {
       const name = 'video for abuse ' + buildUUID()
       const resVideo = await uploadVideo(servers[0].url, userAccessToken, { name })
       const video = resVideo.body.video
-      await addVideoCommentThread(servers[0].url, userAccessToken, video.id, 'comment abuse ' + buildUUID())
+
+      await servers[0].commentsCommand.createThread({
+        token: userAccessToken,
+        videoId: video.id,
+        text: 'comment abuse ' + buildUUID()
+      })
 
       await waitJobs(servers)
 
-      const resComments = await getVideoCommentThreads(servers[1].url, video.uuid, 0, 5)
-      const commentId = resComments.body.data[0].id
+      const { data } = await servers[1].commentsCommand.listThreads({ videoId: video.uuid })
+      const commentId = data[0].id
       await servers[1].abusesCommand.report({ commentId, reason: 'super reason' })
 
       await waitJobs(servers)
diff --git a/server/tests/api/server/bulk.ts b/server/tests/api/server/bulk.ts
index ca98a2eb2..5c8673e00 100644
--- a/server/tests/api/server/bulk.ts
+++ b/server/tests/api/server/bulk.ts
@@ -2,16 +2,13 @@
 
 import 'mocha'
 import * as chai from 'chai'
-import { Video, VideoComment } from '@shared/models'
+import { Video } from '@shared/models'
 import {
-  addVideoCommentReply,
-  addVideoCommentThread,
   BulkCommand,
   cleanupTests,
   createUser,
   doubleFollow,
   flushAndRunMultipleServers,
-  getVideoCommentThreads,
   getVideosList,
   ServerInfo,
   setAccessTokensToServers,
@@ -26,9 +23,9 @@ describe('Test bulk actions', function () {
   const commentsUser3: { videoId: number, commentId: number }[] = []
 
   let servers: ServerInfo[] = []
-  let user1AccessToken: string
-  let user2AccessToken: string
-  let user3AccessToken: string
+  let user1Token: string
+  let user2Token: string
+  let user3Token: string
 
   let bulkCommand: BulkCommand
 
@@ -44,21 +41,21 @@ describe('Test bulk actions', function () {
       const user = { username: 'user1', password: 'password' }
       await createUser({ url: servers[0].url, accessToken: servers[0].accessToken, username: user.username, password: user.password })
 
-      user1AccessToken = await userLogin(servers[0], user)
+      user1Token = await userLogin(servers[0], user)
     }
 
     {
       const user = { username: 'user2', password: 'password' }
       await createUser({ url: servers[0].url, accessToken: servers[0].accessToken, username: user.username, password: user.password })
 
-      user2AccessToken = await userLogin(servers[0], user)
+      user2Token = await userLogin(servers[0], user)
     }
 
     {
       const user = { username: 'user3', password: 'password' }
       await createUser({ url: servers[1].url, accessToken: servers[1].accessToken, username: user.username, password: user.password })
 
-      user3AccessToken = await userLogin(servers[1], user)
+      user3Token = await userLogin(servers[1], user)
     }
 
     await doubleFollow(servers[0], servers[1])
@@ -74,9 +71,8 @@ describe('Test bulk actions', function () {
 
         // Server 1 should not have these comments anymore
         for (const video of videos) {
-          const resThreads = await getVideoCommentThreads(servers[0].url, video.id, 0, 10)
-          const comments = resThreads.body.data as VideoComment[]
-          const comment = comments.find(c => c.text === 'comment by user 3')
+          const { data } = await servers[0].commentsCommand.listThreads({ videoId: video.id })
+          const comment = data.find(c => c.text === 'comment by user 3')
 
           expect(comment).to.not.exist
         }
@@ -88,9 +84,8 @@ describe('Test bulk actions', function () {
 
         // Server 1 should not have these comments on videos of server 1
         for (const video of videos) {
-          const resThreads = await getVideoCommentThreads(servers[1].url, video.id, 0, 10)
-          const comments = resThreads.body.data as VideoComment[]
-          const comment = comments.find(c => c.text === 'comment by user 3')
+          const { data } = await servers[1].commentsCommand.listThreads({ videoId: video.id })
+          const comment = data.find(c => c.text === 'comment by user 3')
 
           if (video.account.host === 'localhost:' + servers[0].port) {
             expect(comment).to.not.exist
@@ -106,7 +101,7 @@ describe('Test bulk actions', function () {
 
       await uploadVideo(servers[0].url, servers[0].accessToken, { name: 'video 1 server 1' })
       await uploadVideo(servers[0].url, servers[0].accessToken, { name: 'video 2 server 1' })
-      await uploadVideo(servers[0].url, user1AccessToken, { name: 'video 3 server 1' })
+      await uploadVideo(servers[0].url, user1Token, { name: 'video 3 server 1' })
 
       await uploadVideo(servers[1].url, servers[1].accessToken, { name: 'video 1 server 2' })
 
@@ -115,19 +110,20 @@ describe('Test bulk actions', function () {
       {
         const res = await getVideosList(servers[0].url)
         for (const video of res.body.data) {
-          await addVideoCommentThread(servers[0].url, servers[0].accessToken, video.id, 'comment by root server 1')
-          await addVideoCommentThread(servers[0].url, user1AccessToken, video.id, 'comment by user 1')
-          await addVideoCommentThread(servers[0].url, user2AccessToken, video.id, 'comment by user 2')
+          await servers[0].commentsCommand.createThread({ videoId: video.id, text: 'comment by root server 1' })
+          await servers[0].commentsCommand.createThread({ token: user1Token, videoId: video.id, text: 'comment by user 1' })
+          await servers[0].commentsCommand.createThread({ token: user2Token, videoId: video.id, text: 'comment by user 2' })
         }
       }
 
       {
         const res = await getVideosList(servers[1].url)
-        for (const video of res.body.data) {
-          await addVideoCommentThread(servers[1].url, servers[1].accessToken, video.id, 'comment by root server 2')
 
-          const res = await addVideoCommentThread(servers[1].url, user3AccessToken, video.id, 'comment by user 3')
-          commentsUser3.push({ videoId: video.id, commentId: res.body.comment.id })
+        for (const video of res.body.data) {
+          await servers[1].commentsCommand.createThread({ videoId: video.id, text: 'comment by root server 2' })
+
+          const comment = await servers[1].commentsCommand.createThread({ token: user3Token, videoId: video.id, text: 'comment by user 3' })
+          commentsUser3.push({ videoId: video.id, commentId: comment.id })
         }
       }
 
@@ -138,7 +134,7 @@ describe('Test bulk actions', function () {
       this.timeout(60000)
 
       await bulkCommand.removeCommentsOf({
-        token: user1AccessToken,
+        token: user1Token,
         attributes: {
           accountName: 'user2',
           scope: 'my-videos'
@@ -151,15 +147,11 @@ describe('Test bulk actions', function () {
         const res = await getVideosList(server.url)
 
         for (const video of res.body.data) {
-          const resThreads = await getVideoCommentThreads(server.url, video.id, 0, 10)
-          const comments = resThreads.body.data as VideoComment[]
-          const comment = comments.find(c => c.text === 'comment by user 2')
+          const { data } = await server.commentsCommand.listThreads({ videoId: video.id })
+          const comment = data.find(c => c.text === 'comment by user 2')
 
-          if (video.name === 'video 3 server 1') {
-            expect(comment).to.not.exist
-          } else {
-            expect(comment).to.exist
-          }
+          if (video.name === 'video 3 server 1') expect(comment).to.not.exist
+          else expect(comment).to.exist
         }
       }
     })
@@ -183,7 +175,12 @@ describe('Test bulk actions', function () {
       this.timeout(60000)
 
       for (const obj of commentsUser3) {
-        await addVideoCommentReply(servers[1].url, user3AccessToken, obj.videoId, obj.commentId, 'comment by user 3 bis')
+        await servers[1].commentsCommand.addReply({
+          token: user3Token,
+          videoId: obj.videoId,
+          toCommentId: obj.commentId,
+          text: 'comment by user 3 bis'
+        })
       }
 
       await waitJobs(servers)
diff --git a/server/tests/api/server/follows.ts b/server/tests/api/server/follows.ts
index 520442c6e..4a9ed2d05 100644
--- a/server/tests/api/server/follows.ts
+++ b/server/tests/api/server/follows.ts
@@ -3,19 +3,14 @@
 import 'mocha'
 import * as chai from 'chai'
 import {
-  addVideoCommentReply,
-  addVideoCommentThread,
   cleanupTests,
   completeVideoCheck,
   createUser,
   dateIsValid,
-  deleteVideoComment,
   expectAccountFollows,
   flushAndRunMultipleServers,
   FollowsCommand,
-  getVideoCommentThreads,
   getVideosList,
-  getVideoThreadComments,
   rateVideo,
   ServerInfo,
   setAccessTokensToServers,
@@ -24,7 +19,7 @@ import {
   userLogin,
   waitJobs
 } from '@shared/extra-utils'
-import { Video, VideoComment, VideoCommentThreadTree, VideoPrivacy } from '@shared/models'
+import { Video, VideoPrivacy } from '@shared/models'
 
 const expect = chai.expect
 
@@ -348,37 +343,35 @@ describe('Test follows', function () {
         {
           {
             const text = 'my super first comment'
-            const res = await addVideoCommentThread(servers[2].url, servers[2].accessToken, video4.id, text)
-            const threadId = res.body.comment.id
+            const created = await servers[2].commentsCommand.createThread({ videoId: video4.id, text })
+            const threadId = created.id
 
             const text1 = 'my super answer to thread 1'
-            const childCommentRes = await addVideoCommentReply(servers[2].url, servers[2].accessToken, video4.id, threadId, text1)
-            const childCommentId = childCommentRes.body.comment.id
+            const childComment = await servers[2].commentsCommand.addReply({ videoId: video4.id, toCommentId: threadId, text: text1 })
 
             const text2 = 'my super answer to answer of thread 1'
-            await addVideoCommentReply(servers[2].url, servers[2].accessToken, video4.id, childCommentId, text2)
+            await servers[2].commentsCommand.addReply({ videoId: video4.id, toCommentId: childComment.id, text: text2 })
 
             const text3 = 'my second answer to thread 1'
-            await addVideoCommentReply(servers[2].url, servers[2].accessToken, video4.id, threadId, text3)
+            await servers[2].commentsCommand.addReply({ videoId: video4.id, toCommentId: threadId, text: text3 })
           }
 
           {
             const text = 'will be deleted'
-            const res = await addVideoCommentThread(servers[2].url, servers[2].accessToken, video4.id, text)
-            const threadId = res.body.comment.id
+            const created = await servers[2].commentsCommand.createThread({ videoId: video4.id, text })
+            const threadId = created.id
 
             const text1 = 'answer to deleted'
-            await addVideoCommentReply(servers[2].url, servers[2].accessToken, video4.id, threadId, text1)
+            await servers[2].commentsCommand.addReply({ videoId: video4.id, toCommentId: threadId, text: text1 })
 
             const text2 = 'will also be deleted'
-            const childCommentRes = await addVideoCommentReply(servers[2].url, servers[2].accessToken, video4.id, threadId, text2)
-            const childCommentId = childCommentRes.body.comment.id
+            const childComment = await servers[2].commentsCommand.addReply({ videoId: video4.id, toCommentId: threadId, text: text2 })
 
             const text3 = 'my second answer to deleted'
-            await addVideoCommentReply(servers[2].url, servers[2].accessToken, video4.id, childCommentId, text3)
+            await servers[2].commentsCommand.addReply({ videoId: video4.id, toCommentId: childComment.id, text: text3 })
 
-            await deleteVideoComment(servers[2].url, servers[2].accessToken, video4.id, threadId)
-            await deleteVideoComment(servers[2].url, servers[2].accessToken, video4.id, childCommentId)
+            await servers[2].commentsCommand.delete({ videoId: video4.id, commentId: threadId })
+            await servers[2].commentsCommand.delete({ videoId: video4.id, commentId: childComment.id })
           }
         }
 
@@ -462,14 +455,14 @@ describe('Test follows', function () {
     })
 
     it('Should have propagated comments', async function () {
-      const res1 = await getVideoCommentThreads(servers[0].url, video4.id, 0, 5, 'createdAt')
+      const { total, data } = await servers[0].commentsCommand.listThreads({ videoId: video4.id, sort: 'createdAt' })
 
-      expect(res1.body.total).to.equal(2)
-      expect(res1.body.data).to.be.an('array')
-      expect(res1.body.data).to.have.lengthOf(2)
+      expect(total).to.equal(2)
+      expect(data).to.be.an('array')
+      expect(data).to.have.lengthOf(2)
 
       {
-        const comment: VideoComment = res1.body.data[0]
+        const comment = data[0]
         expect(comment.inReplyToCommentId).to.be.null
         expect(comment.text).equal('my super first comment')
         expect(comment.videoId).to.equal(video4.id)
@@ -482,9 +475,7 @@ describe('Test follows', function () {
 
         const threadId = comment.threadId
 
-        const res2 = await getVideoThreadComments(servers[0].url, video4.id, threadId)
-
-        const tree: VideoCommentThreadTree = res2.body
+        const tree = await servers[0].commentsCommand.getThread({ videoId: video4.id, threadId })
         expect(tree.comment.text).equal('my super first comment')
         expect(tree.children).to.have.lengthOf(2)
 
@@ -502,7 +493,7 @@ describe('Test follows', function () {
       }
 
       {
-        const deletedComment: VideoComment = res1.body.data[1]
+        const deletedComment = data[1]
         expect(deletedComment).to.not.be.undefined
         expect(deletedComment.isDeleted).to.be.true
         expect(deletedComment.deletedAt).to.not.be.null
@@ -512,9 +503,7 @@ describe('Test follows', function () {
         expect(deletedComment.totalReplies).to.equal(2)
         expect(dateIsValid(deletedComment.deletedAt as string)).to.be.true
 
-        const res2 = await getVideoThreadComments(servers[0].url, video4.id, deletedComment.threadId)
-
-        const tree: VideoCommentThreadTree = res2.body
+        const tree = await servers[0].commentsCommand.getThread({ videoId: video4.id, threadId: deletedComment.threadId })
         const [ commentRoot, deletedChildRoot ] = tree.children
 
         expect(deletedChildRoot).to.not.be.undefined
diff --git a/server/tests/api/server/handle-down.ts b/server/tests/api/server/handle-down.ts
index c6202fdaa..94496a159 100644
--- a/server/tests/api/server/handle-down.ts
+++ b/server/tests/api/server/handle-down.ts
@@ -4,16 +4,13 @@ import 'mocha'
 import * as chai from 'chai'
 import { HttpStatusCode } from '@shared/core-utils'
 import {
-  addVideoCommentReply,
-  addVideoCommentThread,
   cleanupTests,
   closeAllSequelize,
+  CommentsCommand,
   completeVideoCheck,
   flushAndRunMultipleServers,
   getVideo,
-  getVideoCommentThreads,
   getVideosList,
-  getVideoThreadComments,
   immutableAssign,
   killallServers,
   reRunServer,
@@ -26,7 +23,7 @@ import {
   wait,
   waitJobs
 } from '@shared/extra-utils'
-import { JobState, Video, VideoCommentThreadTree, VideoPrivacy } from '@shared/models'
+import { JobState, Video, VideoPrivacy } from '@shared/models'
 
 const expect = chai.expect
 
@@ -62,10 +59,13 @@ describe('Test handle downs', function () {
   let checkAttributes: any
   let unlistedCheckAttributes: any
 
+  let commentCommands: CommentsCommand[]
+
   before(async function () {
     this.timeout(30000)
 
     servers = await flushAndRunMultipleServers(3)
+    commentCommands = servers.map(s => s.commentsCommand)
 
     checkAttributes = {
       name: 'my super name for server 1',
@@ -154,15 +154,13 @@ describe('Test handle downs', function () {
     // Add comments to video 2
     {
       const text = 'thread 1'
-      let resComment = await addVideoCommentThread(servers[0].url, servers[0].accessToken, missedVideo2.uuid, text)
-      let comment = resComment.body.comment
+      let comment = await commentCommands[0].createThread({ videoId: missedVideo2.uuid, text })
       threadIdServer1 = comment.id
 
-      resComment = await addVideoCommentReply(servers[0].url, servers[0].accessToken, missedVideo2.uuid, comment.id, 'comment 1-1')
-      comment = resComment.body.comment
+      comment = await commentCommands[0].addReply({ videoId: missedVideo2.uuid, toCommentId: comment.id, text: 'comment 1-1' })
 
-      resComment = await addVideoCommentReply(servers[0].url, servers[0].accessToken, missedVideo2.uuid, comment.id, 'comment 1-2')
-      commentIdServer1 = resComment.body.comment.id
+      const created = await commentCommands[0].addReply({ videoId: missedVideo2.uuid, toCommentId: comment.id, text: 'comment 1-2' })
+      commentIdServer1 = created.id
     }
 
     await waitJobs(servers[0])
@@ -235,7 +233,7 @@ describe('Test handle downs', function () {
   it('Should send comments on a video to server 3, and automatically fetch the video', async function () {
     this.timeout(25000)
 
-    await addVideoCommentReply(servers[0].url, servers[0].accessToken, missedVideo2.uuid, commentIdServer1, 'comment 1-3')
+    await commentCommands[0].addReply({ videoId: missedVideo2.uuid, toCommentId: commentIdServer1, text: 'comment 1-3' })
 
     await waitJobs(servers)
 
@@ -243,15 +241,13 @@ describe('Test handle downs', function () {
     expect(resVideo.body).not.to.be.undefined
 
     {
-      let resComment = await getVideoCommentThreads(servers[2].url, missedVideo2.uuid, 0, 5)
-      expect(resComment.body.data).to.be.an('array')
-      expect(resComment.body.data).to.have.lengthOf(1)
+      const { data } = await servers[2].commentsCommand.listThreads({ videoId: missedVideo2.uuid })
+      expect(data).to.be.an('array')
+      expect(data).to.have.lengthOf(1)
 
-      threadIdServer2 = resComment.body.data[0].id
+      threadIdServer2 = data[0].id
 
-      resComment = await getVideoThreadComments(servers[2].url, missedVideo2.uuid, threadIdServer2)
-
-      const tree: VideoCommentThreadTree = resComment.body
+      const tree = await servers[2].commentsCommand.getThread({ videoId: missedVideo2.uuid, threadId: threadIdServer2 })
       expect(tree.comment.text).equal('thread 1')
       expect(tree.children).to.have.lengthOf(1)
 
@@ -274,33 +270,30 @@ describe('Test handle downs', function () {
   it('Should correctly reply to the comment', async function () {
     this.timeout(15000)
 
-    await addVideoCommentReply(servers[2].url, servers[2].accessToken, missedVideo2.uuid, commentIdServer2, 'comment 1-4')
+    await servers[2].commentsCommand.addReply({ videoId: missedVideo2.uuid, toCommentId: commentIdServer2, text: 'comment 1-4' })
 
     await waitJobs(servers)
 
-    {
-      const resComment = await getVideoThreadComments(servers[0].url, missedVideo2.uuid, threadIdServer1)
+    const tree = await commentCommands[0].getThread({ videoId: missedVideo2.uuid, threadId: threadIdServer1 })
 
-      const tree: VideoCommentThreadTree = resComment.body
-      expect(tree.comment.text).equal('thread 1')
-      expect(tree.children).to.have.lengthOf(1)
+    expect(tree.comment.text).equal('thread 1')
+    expect(tree.children).to.have.lengthOf(1)
 
-      const firstChild = tree.children[0]
-      expect(firstChild.comment.text).to.equal('comment 1-1')
-      expect(firstChild.children).to.have.lengthOf(1)
+    const firstChild = tree.children[0]
+    expect(firstChild.comment.text).to.equal('comment 1-1')
+    expect(firstChild.children).to.have.lengthOf(1)
 
-      const childOfFirstChild = firstChild.children[0]
-      expect(childOfFirstChild.comment.text).to.equal('comment 1-2')
-      expect(childOfFirstChild.children).to.have.lengthOf(1)
+    const childOfFirstChild = firstChild.children[0]
+    expect(childOfFirstChild.comment.text).to.equal('comment 1-2')
+    expect(childOfFirstChild.children).to.have.lengthOf(1)
 
-      const childOfChildFirstChild = childOfFirstChild.children[0]
-      expect(childOfChildFirstChild.comment.text).to.equal('comment 1-3')
-      expect(childOfChildFirstChild.children).to.have.lengthOf(1)
+    const childOfChildFirstChild = childOfFirstChild.children[0]
+    expect(childOfChildFirstChild.comment.text).to.equal('comment 1-3')
+    expect(childOfChildFirstChild.children).to.have.lengthOf(1)
 
-      const childOfChildOfChildOfFirstChild = childOfChildFirstChild.children[0]
-      expect(childOfChildOfChildOfFirstChild.comment.text).to.equal('comment 1-4')
-      expect(childOfChildOfChildOfFirstChild.children).to.have.lengthOf(0)
-    }
+    const childOfChildOfChildOfFirstChild = childOfChildFirstChild.children[0]
+    expect(childOfChildOfChildOfFirstChild.comment.text).to.equal('comment 1-4')
+    expect(childOfChildOfChildOfFirstChild.children).to.have.lengthOf(0)
   })
 
   it('Should upload many videos on server 1', async function () {
diff --git a/server/tests/api/server/stats.ts b/server/tests/api/server/stats.ts
index 9c954c347..ded305899 100644
--- a/server/tests/api/server/stats.ts
+++ b/server/tests/api/server/stats.ts
@@ -3,7 +3,6 @@
 import 'mocha'
 import * as chai from 'chai'
 import {
-  addVideoCommentThread,
   cleanupTests,
   createUser,
   doubleFollow,
@@ -42,7 +41,7 @@ describe('Test stats (excluding redundancy)', function () {
     const resVideo = await uploadVideo(servers[0].url, servers[0].accessToken, { fixture: 'video_short.webm' })
     const videoUUID = resVideo.body.video.uuid
 
-    await addVideoCommentThread(servers[0].url, servers[0].accessToken, videoUUID, 'comment')
+    await servers[0].commentsCommand.createThread({ videoId: videoUUID, text: 'comment' })
 
     await viewVideo(servers[0].url, videoUUID)
 
diff --git a/server/tests/api/users/users.ts b/server/tests/api/users/users.ts
index ed670b3c9..4d255f340 100644
--- a/server/tests/api/users/users.ts
+++ b/server/tests/api/users/users.ts
@@ -4,7 +4,6 @@ import 'mocha'
 import * as chai from 'chai'
 import { HttpStatusCode } from '@shared/core-utils'
 import {
-  addVideoCommentThread,
   blockUser,
   cleanupTests,
   closeAllSequelize,
@@ -983,7 +982,7 @@ describe('Test users', function () {
 
     it('Should report correct video comments for user', async function () {
       const text = 'super comment'
-      await addVideoCommentThread(server.url, user17AccessToken, videoId, text)
+      await server.commentsCommand.createThread({ token: user17AccessToken, videoId, text })
 
       const res = await getUserInformation(server.url, server.accessToken, user17Id, true)
       const user: User = res.body
diff --git a/server/tests/api/videos/multiple-servers.ts b/server/tests/api/videos/multiple-servers.ts
index a59d5a858..2148d8e1c 100644
--- a/server/tests/api/videos/multiple-servers.ts
+++ b/server/tests/api/videos/multiple-servers.ts
@@ -3,7 +3,7 @@
 import 'mocha'
 import * as chai from 'chai'
 import * as request from 'supertest'
-import { HttpStatusCode } from '../../../../shared/core-utils/miscs/http-error-codes'
+import { HttpStatusCode } from '@shared/core-utils'
 import {
   buildAbsoluteFixturePath,
   checkTmpIsEmpty,
@@ -27,18 +27,10 @@ import {
   userLogin,
   viewVideo,
   wait,
+  waitJobs,
   webtorrentAdd
-} from '../../../../shared/extra-utils'
-import { waitJobs } from '../../../../shared/extra-utils/server/jobs'
-import {
-  addVideoCommentReply,
-  addVideoCommentThread,
-  deleteVideoComment,
-  findCommentId,
-  getVideoCommentThreads,
-  getVideoThreadComments
-} from '../../../../shared/extra-utils/videos/video-comments'
-import { VideoComment, VideoCommentThreadTree, VideoPrivacy } from '../../../../shared/models/videos'
+} from '@shared/extra-utils'
+import { VideoCommentThreadTree, VideoPrivacy } from '@shared/models'
 
 const expect = chai.expect
 
@@ -762,36 +754,36 @@ describe('Test multiple servers', function () {
 
       {
         const text = 'my super first comment'
-        await addVideoCommentThread(servers[0].url, servers[0].accessToken, videoUUID, text)
+        await servers[0].commentsCommand.createThread({ videoId: videoUUID, text })
       }
 
       {
         const text = 'my super second comment'
-        await addVideoCommentThread(servers[2].url, servers[2].accessToken, videoUUID, text)
+        await servers[2].commentsCommand.createThread({ videoId: videoUUID, text })
       }
 
       await waitJobs(servers)
 
       {
-        const threadId = await findCommentId(servers[1].url, videoUUID, 'my super first comment')
+        const threadId = await servers[1].commentsCommand.findCommentId({ videoId: videoUUID, text: 'my super first comment' })
 
         const text = 'my super answer to thread 1'
-        await addVideoCommentReply(servers[1].url, servers[1].accessToken, videoUUID, threadId, text)
+        await servers[1].commentsCommand.addReply({ videoId: videoUUID, toCommentId: threadId, text })
       }
 
       await waitJobs(servers)
 
       {
-        const threadId = await findCommentId(servers[2].url, videoUUID, 'my super first comment')
+        const threadId = await servers[2].commentsCommand.findCommentId({ videoId: videoUUID, text: 'my super first comment' })
 
-        const res2 = await getVideoThreadComments(servers[2].url, videoUUID, threadId)
-        const childCommentId = res2.body.children[0].comment.id
+        const body = await servers[2].commentsCommand.getThread({ videoId: videoUUID, threadId })
+        const childCommentId = body.children[0].comment.id
 
         const text3 = 'my second answer to thread 1'
-        await addVideoCommentReply(servers[2].url, servers[2].accessToken, videoUUID, threadId, text3)
+        await servers[2].commentsCommand.addReply({ videoId: videoUUID, toCommentId: threadId, text: text3 })
 
         const text2 = 'my super answer to answer of thread 1'
-        await addVideoCommentReply(servers[2].url, servers[2].accessToken, videoUUID, childCommentId, text2)
+        await servers[2].commentsCommand.addReply({ videoId: videoUUID, toCommentId: childCommentId, text: text2 })
       }
 
       await waitJobs(servers)
@@ -799,14 +791,14 @@ describe('Test multiple servers', function () {
 
     it('Should have these threads', async function () {
       for (const server of servers) {
-        const res = await getVideoCommentThreads(server.url, videoUUID, 0, 5)
+        const body = await server.commentsCommand.listThreads({ videoId: videoUUID })
 
-        expect(res.body.total).to.equal(2)
-        expect(res.body.data).to.be.an('array')
-        expect(res.body.data).to.have.lengthOf(2)
+        expect(body.total).to.equal(2)
+        expect(body.data).to.be.an('array')
+        expect(body.data).to.have.lengthOf(2)
 
         {
-          const comment: VideoComment = res.body.data.find(c => c.text === 'my super first comment')
+          const comment = body.data.find(c => c.text === 'my super first comment')
           expect(comment).to.not.be.undefined
           expect(comment.inReplyToCommentId).to.be.null
           expect(comment.account.name).to.equal('root')
@@ -817,7 +809,7 @@ describe('Test multiple servers', function () {
         }
 
         {
-          const comment: VideoComment = res.body.data.find(c => c.text === 'my super second comment')
+          const comment = body.data.find(c => c.text === 'my super second comment')
           expect(comment).to.not.be.undefined
           expect(comment.inReplyToCommentId).to.be.null
           expect(comment.account.name).to.equal('root')
@@ -831,12 +823,11 @@ describe('Test multiple servers', function () {
 
     it('Should have these comments', async function () {
       for (const server of servers) {
-        const res1 = await getVideoCommentThreads(server.url, videoUUID, 0, 5)
-        const threadId = res1.body.data.find(c => c.text === 'my super first comment').id
+        const body = await server.commentsCommand.listThreads({ videoId: videoUUID })
+        const threadId = body.data.find(c => c.text === 'my super first comment').id
 
-        const res2 = await getVideoThreadComments(server.url, videoUUID, threadId)
+        const tree = await server.commentsCommand.getThread({ videoId: videoUUID, threadId })
 
-        const tree: VideoCommentThreadTree = res2.body
         expect(tree.comment.text).equal('my super first comment')
         expect(tree.comment.account.name).equal('root')
         expect(tree.comment.account.host).equal('localhost:' + servers[0].port)
@@ -865,19 +856,17 @@ describe('Test multiple servers', function () {
     it('Should delete a reply', async function () {
       this.timeout(10000)
 
-      await deleteVideoComment(servers[2].url, servers[2].accessToken, videoUUID, childOfFirstChild.comment.id)
+      await servers[2].commentsCommand.delete({ videoId: videoUUID, commentId: childOfFirstChild.comment.id })
 
       await waitJobs(servers)
     })
 
     it('Should have this comment marked as deleted', async function () {
       for (const server of servers) {
-        const res1 = await getVideoCommentThreads(server.url, videoUUID, 0, 5)
-        const threadId = res1.body.data.find(c => c.text === 'my super first comment').id
+        const { data } = await server.commentsCommand.listThreads({ videoId: videoUUID })
+        const threadId = data.find(c => c.text === 'my super first comment').id
 
-        const res2 = await getVideoThreadComments(server.url, videoUUID, threadId)
-
-        const tree: VideoCommentThreadTree = res2.body
+        const tree = await server.commentsCommand.getThread({ videoId: videoUUID, threadId })
         expect(tree.comment.text).equal('my super first comment')
 
         const firstChild = tree.children[0]
@@ -898,23 +887,23 @@ describe('Test multiple servers', function () {
     it('Should delete the thread comments', async function () {
       this.timeout(10000)
 
-      const res = await getVideoCommentThreads(servers[0].url, videoUUID, 0, 5)
-      const threadId = res.body.data.find(c => c.text === 'my super first comment').id
-      await deleteVideoComment(servers[0].url, servers[0].accessToken, videoUUID, threadId)
+      const { data } = await servers[0].commentsCommand.listThreads({ videoId: videoUUID })
+      const commentId = data.find(c => c.text === 'my super first comment').id
+      await servers[0].commentsCommand.delete({ videoId: videoUUID, commentId })
 
       await waitJobs(servers)
     })
 
     it('Should have the threads marked as deleted on other servers too', async function () {
       for (const server of servers) {
-        const res = await getVideoCommentThreads(server.url, videoUUID, 0, 5)
+        const body = await server.commentsCommand.listThreads({ videoId: videoUUID })
 
-        expect(res.body.total).to.equal(2)
-        expect(res.body.data).to.be.an('array')
-        expect(res.body.data).to.have.lengthOf(2)
+        expect(body.total).to.equal(2)
+        expect(body.data).to.be.an('array')
+        expect(body.data).to.have.lengthOf(2)
 
         {
-          const comment: VideoComment = res.body.data[0]
+          const comment = body.data[0]
           expect(comment).to.not.be.undefined
           expect(comment.inReplyToCommentId).to.be.null
           expect(comment.account.name).to.equal('root')
@@ -925,7 +914,7 @@ describe('Test multiple servers', function () {
         }
 
         {
-          const deletedComment: VideoComment = res.body.data[1]
+          const deletedComment = body.data[1]
           expect(deletedComment).to.not.be.undefined
           expect(deletedComment.isDeleted).to.be.true
           expect(deletedComment.deletedAt).to.not.be.null
@@ -943,22 +932,22 @@ describe('Test multiple servers', function () {
     it('Should delete a remote thread by the origin server', async function () {
       this.timeout(5000)
 
-      const res = await getVideoCommentThreads(servers[0].url, videoUUID, 0, 5)
-      const threadId = res.body.data.find(c => c.text === 'my super second comment').id
-      await deleteVideoComment(servers[0].url, servers[0].accessToken, videoUUID, threadId)
+      const { data } = await servers[0].commentsCommand.listThreads({ videoId: videoUUID })
+      const commentId = data.find(c => c.text === 'my super second comment').id
+      await servers[0].commentsCommand.delete({ videoId: videoUUID, commentId })
 
       await waitJobs(servers)
     })
 
     it('Should have the threads marked as deleted on other servers too', async function () {
       for (const server of servers) {
-        const res = await getVideoCommentThreads(server.url, videoUUID, 0, 5)
+        const body = await server.commentsCommand.listThreads({ videoId: videoUUID })
 
-        expect(res.body.total).to.equal(2)
-        expect(res.body.data).to.have.lengthOf(2)
+        expect(body.total).to.equal(2)
+        expect(body.data).to.have.lengthOf(2)
 
         {
-          const comment: VideoComment = res.body.data[0]
+          const comment = body.data[0]
           expect(comment.text).to.equal('')
           expect(comment.isDeleted).to.be.true
           expect(comment.createdAt).to.not.be.null
@@ -968,7 +957,7 @@ describe('Test multiple servers', function () {
         }
 
         {
-          const comment: VideoComment = res.body.data[1]
+          const comment = body.data[1]
           expect(comment.text).to.equal('')
           expect(comment.isDeleted).to.be.true
           expect(comment.createdAt).to.not.be.null
@@ -997,7 +986,7 @@ describe('Test multiple servers', function () {
         expect(res.body.downloadEnabled).to.be.false
 
         const text = 'my super forbidden comment'
-        await addVideoCommentThread(server.url, server.accessToken, videoUUID, text, HttpStatusCode.CONFLICT_409)
+        await server.commentsCommand.createThread({ videoId: videoUUID, text, expectedStatus: HttpStatusCode.CONFLICT_409 })
       }
     })
   })
diff --git a/server/tests/api/videos/video-comments.ts b/server/tests/api/videos/video-comments.ts
index b6b002307..548d9fbf5 100644
--- a/server/tests/api/videos/video-comments.ts
+++ b/server/tests/api/videos/video-comments.ts
@@ -2,38 +2,33 @@
 
 import 'mocha'
 import * as chai from 'chai'
-import { VideoComment, VideoCommentAdmin, VideoCommentThreadTree } from '@shared/models'
-import { cleanupTests, testImage } from '../../../../shared/extra-utils'
 import {
+  cleanupTests,
+  CommentsCommand,
   createUser,
   dateIsValid,
   flushAndRunServer,
   getAccessToken,
   ServerInfo,
   setAccessTokensToServers,
+  testImage,
   updateMyAvatar,
   uploadVideo
-} from '../../../../shared/extra-utils/index'
-import {
-  addVideoCommentReply,
-  addVideoCommentThread,
-  deleteVideoComment,
-  getAdminVideoComments,
-  getVideoCommentThreads,
-  getVideoThreadComments
-} from '../../../../shared/extra-utils/videos/video-comments'
+} from '@shared/extra-utils'
 
 const expect = chai.expect
 
 describe('Test video comments', function () {
   let server: ServerInfo
-  let videoId
-  let videoUUID
-  let threadId
+  let videoId: number
+  let videoUUID: string
+  let threadId: number
   let replyToDeleteId: number
 
   let userAccessTokenServer1: string
 
+  let command: CommentsCommand
+
   before(async function () {
     this.timeout(30000)
 
@@ -58,24 +53,25 @@ describe('Test video comments', function () {
       password: 'password'
     })
     userAccessTokenServer1 = await getAccessToken(server.url, 'user1', 'password')
+
+    command = server.commentsCommand
   })
 
   describe('User comments', function () {
 
     it('Should not have threads on this video', async function () {
-      const res = await getVideoCommentThreads(server.url, videoUUID, 0, 5)
+      const body = await command.listThreads({ videoId: videoUUID })
 
-      expect(res.body.total).to.equal(0)
-      expect(res.body.totalNotDeletedComments).to.equal(0)
-      expect(res.body.data).to.be.an('array')
-      expect(res.body.data).to.have.lengthOf(0)
+      expect(body.total).to.equal(0)
+      expect(body.totalNotDeletedComments).to.equal(0)
+      expect(body.data).to.be.an('array')
+      expect(body.data).to.have.lengthOf(0)
     })
 
     it('Should create a thread in this video', async function () {
       const text = 'my super first comment'
 
-      const res = await addVideoCommentThread(server.url, server.accessToken, videoUUID, text)
-      const comment = res.body.comment
+      const comment = await command.createThread({ videoId: videoUUID, text })
 
       expect(comment.inReplyToCommentId).to.be.null
       expect(comment.text).equal('my super first comment')
@@ -91,14 +87,14 @@ describe('Test video comments', function () {
     })
 
     it('Should list threads of this video', async function () {
-      const res = await getVideoCommentThreads(server.url, videoUUID, 0, 5)
+      const body = await command.listThreads({ videoId: videoUUID })
 
-      expect(res.body.total).to.equal(1)
-      expect(res.body.totalNotDeletedComments).to.equal(1)
-      expect(res.body.data).to.be.an('array')
-      expect(res.body.data).to.have.lengthOf(1)
+      expect(body.total).to.equal(1)
+      expect(body.totalNotDeletedComments).to.equal(1)
+      expect(body.data).to.be.an('array')
+      expect(body.data).to.have.lengthOf(1)
 
-      const comment: VideoComment = res.body.data[0]
+      const comment = body.data[0]
       expect(comment.inReplyToCommentId).to.be.null
       expect(comment.text).equal('my super first comment')
       expect(comment.videoId).to.equal(videoId)
@@ -117,9 +113,9 @@ describe('Test video comments', function () {
     })
 
     it('Should get all the thread created', async function () {
-      const res = await getVideoThreadComments(server.url, videoUUID, threadId)
+      const body = await command.getThread({ videoId: videoUUID, threadId })
 
-      const rootComment = res.body.comment
+      const rootComment = body.comment
       expect(rootComment.inReplyToCommentId).to.be.null
       expect(rootComment.text).equal('my super first comment')
       expect(rootComment.videoId).to.equal(videoId)
@@ -129,20 +125,19 @@ describe('Test video comments', function () {
 
     it('Should create multiple replies in this thread', async function () {
       const text1 = 'my super answer to thread 1'
-      const childCommentRes = await addVideoCommentReply(server.url, server.accessToken, videoId, threadId, text1)
-      const childCommentId = childCommentRes.body.comment.id
+      const created = await command.addReply({ videoId, toCommentId: threadId, text: text1 })
+      const childCommentId = created.id
 
       const text2 = 'my super answer to answer of thread 1'
-      await addVideoCommentReply(server.url, server.accessToken, videoId, childCommentId, text2)
+      await command.addReply({ videoId, toCommentId: childCommentId, text: text2 })
 
       const text3 = 'my second answer to thread 1'
-      await addVideoCommentReply(server.url, server.accessToken, videoId, threadId, text3)
+      await command.addReply({ videoId, toCommentId: threadId, text: text3 })
     })
 
     it('Should get correctly the replies', async function () {
-      const res = await getVideoThreadComments(server.url, videoUUID, threadId)
+      const tree = await command.getThread({ videoId: videoUUID, threadId })
 
-      const tree: VideoCommentThreadTree = res.body
       expect(tree.comment.text).equal('my super first comment')
       expect(tree.children).to.have.lengthOf(2)
 
@@ -163,42 +158,41 @@ describe('Test video comments', function () {
 
     it('Should create other threads', async function () {
       const text1 = 'super thread 2'
-      await addVideoCommentThread(server.url, server.accessToken, videoUUID, text1)
+      await command.createThread({ videoId: videoUUID, text: text1 })
 
       const text2 = 'super thread 3'
-      await addVideoCommentThread(server.url, server.accessToken, videoUUID, text2)
+      await command.createThread({ videoId: videoUUID, text: text2 })
     })
 
     it('Should list the threads', async function () {
-      const res = await getVideoCommentThreads(server.url, videoUUID, 0, 5, 'createdAt')
+      const body = await command.listThreads({ videoId: videoUUID, sort: 'createdAt' })
 
-      expect(res.body.total).to.equal(3)
-      expect(res.body.totalNotDeletedComments).to.equal(6)
-      expect(res.body.data).to.be.an('array')
-      expect(res.body.data).to.have.lengthOf(3)
+      expect(body.total).to.equal(3)
+      expect(body.totalNotDeletedComments).to.equal(6)
+      expect(body.data).to.be.an('array')
+      expect(body.data).to.have.lengthOf(3)
 
-      expect(res.body.data[0].text).to.equal('my super first comment')
-      expect(res.body.data[0].totalReplies).to.equal(3)
-      expect(res.body.data[1].text).to.equal('super thread 2')
-      expect(res.body.data[1].totalReplies).to.equal(0)
-      expect(res.body.data[2].text).to.equal('super thread 3')
-      expect(res.body.data[2].totalReplies).to.equal(0)
+      expect(body.data[0].text).to.equal('my super first comment')
+      expect(body.data[0].totalReplies).to.equal(3)
+      expect(body.data[1].text).to.equal('super thread 2')
+      expect(body.data[1].totalReplies).to.equal(0)
+      expect(body.data[2].text).to.equal('super thread 3')
+      expect(body.data[2].totalReplies).to.equal(0)
     })
 
     it('Should delete a reply', async function () {
-      await deleteVideoComment(server.url, server.accessToken, videoId, replyToDeleteId)
+      await command.delete({ videoId, commentId: replyToDeleteId })
 
       {
-        const res = await getVideoCommentThreads(server.url, videoUUID, 0, 5, 'createdAt')
+        const body = await command.listThreads({ videoId: videoUUID, sort: 'createdAt' })
 
-        expect(res.body.total).to.equal(3)
-        expect(res.body.totalNotDeletedComments).to.equal(5)
+        expect(body.total).to.equal(3)
+        expect(body.totalNotDeletedComments).to.equal(5)
       }
 
       {
-        const res = await getVideoThreadComments(server.url, videoUUID, threadId)
+        const tree = await command.getThread({ videoId: videoUUID, threadId })
 
-        const tree: VideoCommentThreadTree = res.body
         expect(tree.comment.text).equal('my super first comment')
         expect(tree.children).to.have.lengthOf(2)
 
@@ -220,99 +214,88 @@ describe('Test video comments', function () {
     })
 
     it('Should delete a complete thread', async function () {
-      await deleteVideoComment(server.url, server.accessToken, videoId, threadId)
+      await command.delete({ videoId, commentId: threadId })
 
-      const res = await getVideoCommentThreads(server.url, videoUUID, 0, 5, 'createdAt')
-      expect(res.body.total).to.equal(3)
-      expect(res.body.data).to.be.an('array')
-      expect(res.body.data).to.have.lengthOf(3)
+      const body = await command.listThreads({ videoId: videoUUID, sort: 'createdAt' })
+      expect(body.total).to.equal(3)
+      expect(body.data).to.be.an('array')
+      expect(body.data).to.have.lengthOf(3)
 
-      expect(res.body.data[0].text).to.equal('')
-      expect(res.body.data[0].isDeleted).to.be.true
-      expect(res.body.data[0].deletedAt).to.not.be.null
-      expect(res.body.data[0].account).to.be.null
-      expect(res.body.data[0].totalReplies).to.equal(2)
-      expect(res.body.data[1].text).to.equal('super thread 2')
-      expect(res.body.data[1].totalReplies).to.equal(0)
-      expect(res.body.data[2].text).to.equal('super thread 3')
-      expect(res.body.data[2].totalReplies).to.equal(0)
+      expect(body.data[0].text).to.equal('')
+      expect(body.data[0].isDeleted).to.be.true
+      expect(body.data[0].deletedAt).to.not.be.null
+      expect(body.data[0].account).to.be.null
+      expect(body.data[0].totalReplies).to.equal(2)
+      expect(body.data[1].text).to.equal('super thread 2')
+      expect(body.data[1].totalReplies).to.equal(0)
+      expect(body.data[2].text).to.equal('super thread 3')
+      expect(body.data[2].totalReplies).to.equal(0)
     })
 
     it('Should count replies from the video author correctly', async function () {
-      const text = 'my super first comment'
-      await addVideoCommentThread(server.url, server.accessToken, videoUUID, text)
-      let res = await getVideoCommentThreads(server.url, videoUUID, 0, 5)
-      const comment: VideoComment = res.body.data[0]
-      const threadId2 = comment.threadId
+      await command.createThread({ videoId: videoUUID, text: 'my super first comment' })
+
+      const { data } = await command.listThreads({ videoId: videoUUID })
+      const threadId2 = data[0].threadId
 
       const text2 = 'a first answer to thread 4 by a third party'
-      await addVideoCommentReply(server.url, userAccessTokenServer1, videoId, threadId2, text2)
+      await command.addReply({ token: userAccessTokenServer1, videoId, toCommentId: threadId2, text: text2 })
 
       const text3 = 'my second answer to thread 4'
-      await addVideoCommentReply(server.url, server.accessToken, videoId, threadId2, text3)
+      await command.addReply({ videoId, toCommentId: threadId2, text: text3 })
 
-      res = await getVideoThreadComments(server.url, videoUUID, threadId2)
-      const tree: VideoCommentThreadTree = res.body
+      const tree = await command.getThread({ videoId: videoUUID, threadId: threadId2 })
       expect(tree.comment.totalReplies).to.equal(tree.comment.totalRepliesFromVideoAuthor + 1)
     })
   })
 
   describe('All instance comments', function () {
-    async function getComments (options: any = {}) {
-      const res = await getAdminVideoComments(Object.assign({
-        url: server.url,
-        token: server.accessToken,
-        start: 0,
-        count: 10
-      }, options))
-
-      return { comments: res.body.data as VideoCommentAdmin[], total: res.body.total as number }
-    }
 
     it('Should list instance comments as admin', async function () {
-      const { comments } = await getComments({ start: 0, count: 1 })
+      const { data } = await command.listForAdmin({ start: 0, count: 1 })
 
-      expect(comments[0].text).to.equal('my second answer to thread 4')
+      expect(data[0].text).to.equal('my second answer to thread 4')
     })
 
     it('Should filter instance comments by isLocal', async function () {
-      const { total, comments } = await getComments({ isLocal: false })
+      const { total, data } = await command.listForAdmin({ isLocal: false })
 
-      expect(comments).to.have.lengthOf(0)
+      expect(data).to.have.lengthOf(0)
       expect(total).to.equal(0)
     })
 
     it('Should search instance comments by account', async function () {
-      const { total, comments } = await getComments({ searchAccount: 'user' })
+      const { total, data } = await command.listForAdmin({ searchAccount: 'user' })
 
-      expect(comments).to.have.lengthOf(1)
+      expect(data).to.have.lengthOf(1)
       expect(total).to.equal(1)
 
-      expect(comments[0].text).to.equal('a first answer to thread 4 by a third party')
+      expect(data[0].text).to.equal('a first answer to thread 4 by a third party')
     })
 
     it('Should search instance comments by video', async function () {
       {
-        const { total, comments } = await getComments({ searchVideo: 'video' })
+        const { total, data } = await command.listForAdmin({ searchVideo: 'video' })
 
-        expect(comments).to.have.lengthOf(7)
+        expect(data).to.have.lengthOf(7)
         expect(total).to.equal(7)
       }
 
       {
-        const { total, comments } = await getComments({ searchVideo: 'hello' })
+        const { total, data } = await command.listForAdmin({ searchVideo: 'hello' })
 
-        expect(comments).to.have.lengthOf(0)
+        expect(data).to.have.lengthOf(0)
         expect(total).to.equal(0)
       }
     })
 
     it('Should search instance comments', async function () {
-      const { total, comments } = await getComments({ search: 'super thread 3' })
+      const { total, data } = await command.listForAdmin({ search: 'super thread 3' })
 
-      expect(comments).to.have.lengthOf(1)
       expect(total).to.equal(1)
-      expect(comments[0].text).to.equal('super thread 3')
+
+      expect(data).to.have.lengthOf(1)
+      expect(data[0].text).to.equal('super thread 3')
     })
   })
 
diff --git a/server/tests/cli/update-host.ts b/server/tests/cli/update-host.ts
index 09a3dd1e7..61a6c403a 100644
--- a/server/tests/cli/update-host.ts
+++ b/server/tests/cli/update-host.ts
@@ -2,7 +2,6 @@
 
 import 'mocha'
 import {
-  addVideoCommentThread,
   cleanupTests,
   createUser,
   flushAndRunServer,
@@ -55,7 +54,7 @@ describe('Test update host scripts', function () {
 
     // Create comments
     const text = 'my super first comment'
-    await addVideoCommentThread(server.url, server.accessToken, video1UUID, text)
+    await server.commentsCommand.createThread({ videoId: video1UUID, text })
 
     await waitJobs(server)
   })
diff --git a/server/tests/feeds/feeds.ts b/server/tests/feeds/feeds.ts
index 6ee22340b..610849105 100644
--- a/server/tests/feeds/feeds.ts
+++ b/server/tests/feeds/feeds.ts
@@ -5,7 +5,6 @@ import * as chai from 'chai'
 import * as xmlParser from 'fast-xml-parser'
 import { HttpStatusCode } from '@shared/core-utils'
 import {
-  addVideoCommentThread,
   cleanupTests,
   createUser,
   doubleFollow,
@@ -90,8 +89,8 @@ describe('Test syndication feeds', () => {
       const res = await uploadVideo(servers[0].url, servers[0].accessToken, videoAttributes)
       const videoId = res.body.video.id
 
-      await addVideoCommentThread(servers[0].url, servers[0].accessToken, videoId, 'super comment 1')
-      await addVideoCommentThread(servers[0].url, servers[0].accessToken, videoId, 'super comment 2')
+      await servers[0].commentsCommand.createThread({ videoId, text: 'super comment 1' })
+      await servers[0].commentsCommand.createThread({ videoId, text: 'super comment 2' })
     }
 
     {
@@ -99,7 +98,7 @@ describe('Test syndication feeds', () => {
       const res = await uploadVideo(servers[0].url, servers[0].accessToken, videoAttributes)
       const videoId = res.body.video.id
 
-      await addVideoCommentThread(servers[0].url, servers[0].accessToken, videoId, 'comment on unlisted video')
+      await servers[0].commentsCommand.createThread({ videoId, text: 'comment on unlisted video' })
     }
 
     await waitJobs(servers)
@@ -277,7 +276,7 @@ describe('Test syndication feeds', () => {
       {
         const videoUUID = (await uploadVideoAndGetId({ server: servers[1], videoName: 'server 2' })).uuid
         await waitJobs(servers)
-        await addVideoCommentThread(servers[0].url, servers[0].accessToken, videoUUID, 'super comment')
+        await servers[0].commentsCommand.createThread({ videoId: videoUUID, text: 'super comment' })
         await waitJobs(servers)
 
         const json = await servers[1].feedCommand.getJSON({ feed: 'video-comments', query: { version: 3 } })
diff --git a/server/tests/plugins/action-hooks.ts b/server/tests/plugins/action-hooks.ts
index fd83bf2ac..6975ca4bb 100644
--- a/server/tests/plugins/action-hooks.ts
+++ b/server/tests/plugins/action-hooks.ts
@@ -3,11 +3,8 @@
 import 'mocha'
 import { ServerHookName, VideoPlaylistPrivacy, VideoPrivacy } from '@shared/models'
 import {
-  addVideoCommentReply,
-  addVideoCommentThread,
   blockUser,
   createUser,
-  deleteVideoComment,
   PluginsCommand,
   registerUser,
   removeUser,
@@ -101,20 +98,20 @@ describe('Test plugin action hooks', function () {
 
   describe('Comments hooks', function () {
     it('Should run action:api.video-thread.created', async function () {
-      const res = await addVideoCommentThread(servers[0].url, servers[0].accessToken, videoUUID, 'thread')
-      threadId = res.body.comment.id
+      const created = await servers[0].commentsCommand.createThread({ videoId: videoUUID, text: 'thread' })
+      threadId = created.id
 
       await checkHook('action:api.video-thread.created')
     })
 
     it('Should run action:api.video-comment-reply.created', async function () {
-      await addVideoCommentReply(servers[0].url, servers[0].accessToken, videoUUID, threadId, 'reply')
+      await servers[0].commentsCommand.addReply({ videoId: videoUUID, toCommentId: threadId, text: 'reply' })
 
       await checkHook('action:api.video-comment-reply.created')
     })
 
     it('Should run action:api.video-comment.deleted', async function () {
-      await deleteVideoComment(servers[0].url, servers[0].accessToken, videoUUID, threadId)
+      await servers[0].commentsCommand.delete({ videoId: videoUUID, commentId: threadId })
 
       await checkHook('action:api.video-comment.deleted')
     })
diff --git a/server/tests/plugins/filter-hooks.ts b/server/tests/plugins/filter-hooks.ts
index a3c3c0551..c235508e8 100644
--- a/server/tests/plugins/filter-hooks.ts
+++ b/server/tests/plugins/filter-hooks.ts
@@ -4,8 +4,6 @@ import 'mocha'
 import * as chai from 'chai'
 import { HttpStatusCode } from '@shared/core-utils'
 import {
-  addVideoCommentReply,
-  addVideoCommentThread,
   cleanupTests,
   doubleFollow,
   flushAndRunMultipleServers,
@@ -13,10 +11,8 @@ import {
   getMyVideos,
   getVideo,
   getVideoChannelVideos,
-  getVideoCommentThreads,
   getVideosList,
   getVideosListPagination,
-  getVideoThreadComments,
   getVideoWithToken,
   ImportsCommand,
   makeRawRequest,
@@ -31,7 +27,7 @@ import {
   waitJobs,
   waitUntilLog
 } from '@shared/extra-utils'
-import { VideoCommentThreadTree, VideoDetails, VideoImportState, VideoPlaylist, VideoPlaylistPrivacy, VideoPrivacy } from '@shared/models'
+import { VideoDetails, VideoImportState, VideoPlaylist, VideoPlaylistPrivacy, VideoPrivacy } from '@shared/models'
 
 const expect = chai.expect
 
@@ -226,44 +222,50 @@ describe('Test plugin filter hooks', function () {
   })
 
   it('Should run filter:api.video-thread.create.accept.result', async function () {
-    await addVideoCommentThread(servers[0].url, servers[0].accessToken, videoUUID, 'comment with bad word', HttpStatusCode.FORBIDDEN_403)
+    await servers[0].commentsCommand.createThread({
+      videoId: videoUUID,
+      text: 'comment with bad word',
+      expectedStatus: HttpStatusCode.FORBIDDEN_403
+    })
   })
 
   it('Should run filter:api.video-comment-reply.create.accept.result', async function () {
-    const res = await addVideoCommentThread(servers[0].url, servers[0].accessToken, videoUUID, 'thread')
-    threadId = res.body.comment.id
+    const created = await servers[0].commentsCommand.createThread({ videoId: videoUUID, text: 'thread' })
+    threadId = created.id
 
-    await addVideoCommentReply(
-      servers[0].url,
-      servers[0].accessToken,
-      videoUUID,
-      threadId,
-      'comment with bad word',
-      HttpStatusCode.FORBIDDEN_403
-    )
-    await addVideoCommentReply(servers[0].url, servers[0].accessToken, videoUUID, threadId, 'comment with good word', HttpStatusCode.OK_200)
+    await servers[0].commentsCommand.addReply({
+      videoId: videoUUID,
+      toCommentId: threadId,
+      text: 'comment with bad word',
+      expectedStatus: HttpStatusCode.FORBIDDEN_403
+    })
+    await servers[0].commentsCommand.addReply({
+      videoId: videoUUID,
+      toCommentId: threadId,
+      text: 'comment with good word',
+      expectedStatus: HttpStatusCode.OK_200
+    })
   })
 
   it('Should run filter:api.video-threads.list.params', async function () {
-    const res = await getVideoCommentThreads(servers[0].url, videoUUID, 0, 0)
+    const { data } = await servers[0].commentsCommand.listThreads({ videoId: videoUUID, start: 0, count: 0 })
 
     // our plugin do +1 to the count parameter
-    expect(res.body.data).to.have.lengthOf(1)
+    expect(data).to.have.lengthOf(1)
   })
 
   it('Should run filter:api.video-threads.list.result', async function () {
-    const res = await getVideoCommentThreads(servers[0].url, videoUUID, 0, 0)
+    const { total } = await servers[0].commentsCommand.listThreads({ videoId: videoUUID, start: 0, count: 0 })
 
     // Plugin do +1 to the total result
-    expect(res.body.total).to.equal(2)
+    expect(total).to.equal(2)
   })
 
   it('Should run filter:api.video-thread-comments.list.params')
 
   it('Should run filter:api.video-thread-comments.list.result', async function () {
-    const res = await getVideoThreadComments(servers[0].url, videoUUID, threadId)
+    const thread = await servers[0].commentsCommand.getThread({ videoId: videoUUID, threadId })
 
-    const thread = res.body as VideoCommentThreadTree
     expect(thread.comment.text.endsWith(' <3')).to.be.true
   })
 
diff --git a/shared/extra-utils/server/servers.ts b/shared/extra-utils/server/servers.ts
index 68e10af5f..8e80a9842 100644
--- a/shared/extra-utils/server/servers.ts
+++ b/shared/extra-utils/server/servers.ts
@@ -30,6 +30,7 @@ import {
   ServicesCommand,
   StreamingPlaylistsCommand
 } from '../videos'
+import { CommentsCommand } from '../videos/comments-command'
 import { ConfigCommand } from './config-command'
 import { ContactFormCommand } from './contact-form-command'
 import { DebugCommand } from './debug-command'
@@ -121,6 +122,7 @@ interface ServerInfo {
   importsCommand?: ImportsCommand
   streamingPlaylistsCommand?: StreamingPlaylistsCommand
   channelsCommand?: ChannelsCommand
+  commentsCommand?: CommentsCommand
 }
 
 function parallelTests () {
@@ -356,6 +358,7 @@ async function runServer (server: ServerInfo, configOverrideArg?: any, args = []
       server.importsCommand = new ImportsCommand(server)
       server.streamingPlaylistsCommand = new StreamingPlaylistsCommand(server)
       server.channelsCommand = new ChannelsCommand(server)
+      server.commentsCommand = new CommentsCommand(server)
 
       res(server)
     })
diff --git a/shared/extra-utils/videos/comments-command.ts b/shared/extra-utils/videos/comments-command.ts
new file mode 100644
index 000000000..b31f3e2dd
--- /dev/null
+++ b/shared/extra-utils/videos/comments-command.ts
@@ -0,0 +1,132 @@
+import { pick } from 'lodash'
+import { ResultList, VideoComment, VideoCommentThreads, VideoCommentThreadTree } from '@shared/models'
+import { HttpStatusCode } from '../../core-utils/miscs/http-error-codes'
+import { unwrapBody } from '../requests'
+import { AbstractCommand, OverrideCommandOptions } from '../shared'
+
+export class CommentsCommand extends AbstractCommand {
+
+  listForAdmin (options: OverrideCommandOptions & {
+    start?: number
+    count?: number
+    sort?: string
+    isLocal?: boolean
+    search?: string
+    searchAccount?: string
+    searchVideo?: string
+  } = {}) {
+    const { sort = '-createdAt' } = options
+    const path = '/api/v1/videos/comments'
+
+    const query = { sort, ...pick(options, [ 'start', 'count', 'isLocal', 'search', 'searchAccount', 'searchVideo' ]) }
+
+    return this.getRequestBody<ResultList<VideoComment>>({
+      ...options,
+
+      path,
+      query,
+      implicitToken: true,
+      defaultExpectedStatus: HttpStatusCode.OK_200
+    })
+  }
+
+  listThreads (options: OverrideCommandOptions & {
+    videoId: number | string
+    start?: number
+    count?: number
+    sort?: string
+  }) {
+    const { start, count, sort, videoId } = options
+    const path = '/api/v1/videos/' + videoId + '/comment-threads'
+
+    return this.getRequestBody<VideoCommentThreads>({
+      ...options,
+
+      path,
+      query: { start, count, sort },
+      implicitToken: false,
+      defaultExpectedStatus: HttpStatusCode.OK_200
+    })
+  }
+
+  getThread (options: OverrideCommandOptions & {
+    videoId: number | string
+    threadId: number
+  }) {
+    const { videoId, threadId } = options
+    const path = '/api/v1/videos/' + videoId + '/comment-threads/' + threadId
+
+    return this.getRequestBody<VideoCommentThreadTree>({
+      ...options,
+
+      path,
+      implicitToken: false,
+      defaultExpectedStatus: HttpStatusCode.OK_200
+    })
+  }
+
+  async createThread (options: OverrideCommandOptions & {
+    videoId: number | string
+    text: string
+  }) {
+    const { videoId, text } = options
+    const path = '/api/v1/videos/' + videoId + '/comment-threads'
+
+    const body = await unwrapBody<{ comment: VideoComment }>(this.postBodyRequest({
+      ...options,
+
+      path,
+      fields: { text },
+      implicitToken: true,
+      defaultExpectedStatus: HttpStatusCode.OK_200
+    }))
+
+    return body.comment
+  }
+
+  async addReply (options: OverrideCommandOptions & {
+    videoId: number | string
+    toCommentId: number
+    text: string
+  }) {
+    const { videoId, toCommentId, text } = options
+    const path = '/api/v1/videos/' + videoId + '/comments/' + toCommentId
+
+    const body = await unwrapBody<{ comment: VideoComment }>(this.postBodyRequest({
+      ...options,
+
+      path,
+      fields: { text },
+      implicitToken: true,
+      defaultExpectedStatus: HttpStatusCode.OK_200
+    }))
+
+    return body.comment
+  }
+
+  async findCommentId (options: OverrideCommandOptions & {
+    videoId: number | string
+    text: string
+  }) {
+    const { videoId, text } = options
+    const { data } = await this.listThreads({ videoId, count: 25, sort: '-createdAt' })
+
+    return data.find(c => c.text === text).id
+  }
+
+  delete (options: OverrideCommandOptions & {
+    videoId: number | string
+    commentId: number
+  }) {
+    const { videoId, commentId } = options
+    const path = '/api/v1/videos/' + videoId + '/comments/' + commentId
+
+    return this.deleteRequest({
+      ...options,
+
+      path,
+      implicitToken: true,
+      defaultExpectedStatus: HttpStatusCode.NO_CONTENT_204
+    })
+  }
+}
diff --git a/shared/extra-utils/videos/index.ts b/shared/extra-utils/videos/index.ts
index 3bc219281..652d82842 100644
--- a/shared/extra-utils/videos/index.ts
+++ b/shared/extra-utils/videos/index.ts
@@ -4,6 +4,7 @@ export * from './captions'
 export * from './change-ownership-command'
 export * from './channels'
 export * from './channels-command'
+export * from './comments-command'
 export * from './history-command'
 export * from './imports-command'
 export * from './live-command'
@@ -13,5 +14,5 @@ export * from './playlists'
 export * from './services-command'
 export * from './streaming-playlists-command'
 export * from './streaming-playlists'
-export * from './video-comments'
+export * from './comments-command'
 export * from './videos'
diff --git a/shared/extra-utils/videos/streaming-playlists-command.ts b/shared/extra-utils/videos/streaming-playlists-command.ts
index 4caec7137..b109597c9 100644
--- a/shared/extra-utils/videos/streaming-playlists-command.ts
+++ b/shared/extra-utils/videos/streaming-playlists-command.ts
@@ -27,7 +27,7 @@ export class StreamingPlaylistsCommand extends AbstractCommand {
       url: options.url,
       range: options.range,
       implicitToken: false,
-      defaultExpectedStatus: HttpStatusCode.OK_200,
+      defaultExpectedStatus: HttpStatusCode.OK_200
     }))
   }
 
diff --git a/shared/extra-utils/videos/video-comments.ts b/shared/extra-utils/videos/video-comments.ts
deleted file mode 100644
index 71b9f875a..000000000
--- a/shared/extra-utils/videos/video-comments.ts
+++ /dev/null
@@ -1,138 +0,0 @@
-/* eslint-disable @typescript-eslint/no-floating-promises */
-
-import * as request from 'supertest'
-import { makeDeleteRequest, makeGetRequest } from '../requests/requests'
-import { HttpStatusCode } from '../../../shared/core-utils/miscs/http-error-codes'
-
-function getAdminVideoComments (options: {
-  url: string
-  token: string
-  start: number
-  count: number
-  sort?: string
-  isLocal?: boolean
-  search?: string
-  searchAccount?: string
-  searchVideo?: string
-}) {
-  const { url, token, start, count, sort, isLocal, search, searchAccount, searchVideo } = options
-  const path = '/api/v1/videos/comments'
-
-  const query = {
-    start,
-    count,
-    sort: sort || '-createdAt'
-  }
-
-  if (isLocal !== undefined) Object.assign(query, { isLocal })
-  if (search !== undefined) Object.assign(query, { search })
-  if (searchAccount !== undefined) Object.assign(query, { searchAccount })
-  if (searchVideo !== undefined) Object.assign(query, { searchVideo })
-
-  return makeGetRequest({
-    url,
-    path,
-    token,
-    query,
-    statusCodeExpected: HttpStatusCode.OK_200
-  })
-}
-
-function getVideoCommentThreads (url: string, videoId: number | string, start: number, count: number, sort?: string, token?: string) {
-  const path = '/api/v1/videos/' + videoId + '/comment-threads'
-
-  const req = request(url)
-    .get(path)
-    .query({ start: start })
-    .query({ count: count })
-
-  if (sort) req.query({ sort })
-  if (token) req.set('Authorization', 'Bearer ' + token)
-
-  return req.set('Accept', 'application/json')
-    .expect(HttpStatusCode.OK_200)
-    .expect('Content-Type', /json/)
-}
-
-function getVideoThreadComments (url: string, videoId: number | string, threadId: number, token?: string) {
-  const path = '/api/v1/videos/' + videoId + '/comment-threads/' + threadId
-
-  const req = request(url)
-    .get(path)
-    .set('Accept', 'application/json')
-
-  if (token) req.set('Authorization', 'Bearer ' + token)
-
-  return req.expect(HttpStatusCode.OK_200)
-            .expect('Content-Type', /json/)
-}
-
-function addVideoCommentThread (
-  url: string,
-  token: string,
-  videoId: number | string,
-  text: string,
-  expectedStatus = HttpStatusCode.OK_200
-) {
-  const path = '/api/v1/videos/' + videoId + '/comment-threads'
-
-  return request(url)
-    .post(path)
-    .send({ text })
-    .set('Accept', 'application/json')
-    .set('Authorization', 'Bearer ' + token)
-    .expect(expectedStatus)
-}
-
-function addVideoCommentReply (
-  url: string,
-  token: string,
-  videoId: number | string,
-  inReplyToCommentId: number,
-  text: string,
-  expectedStatus = HttpStatusCode.OK_200
-) {
-  const path = '/api/v1/videos/' + videoId + '/comments/' + inReplyToCommentId
-
-  return request(url)
-    .post(path)
-    .send({ text })
-    .set('Accept', 'application/json')
-    .set('Authorization', 'Bearer ' + token)
-    .expect(expectedStatus)
-}
-
-async function findCommentId (url: string, videoId: number | string, text: string) {
-  const res = await getVideoCommentThreads(url, videoId, 0, 25, '-createdAt')
-
-  return res.body.data.find(c => c.text === text).id as number
-}
-
-function deleteVideoComment (
-  url: string,
-  token: string,
-  videoId: number | string,
-  commentId: number,
-  statusCodeExpected = HttpStatusCode.NO_CONTENT_204
-) {
-  const path = '/api/v1/videos/' + videoId + '/comments/' + commentId
-
-  return makeDeleteRequest({
-    url,
-    path,
-    token,
-    statusCodeExpected
-  })
-}
-
-// ---------------------------------------------------------------------------
-
-export {
-  getVideoCommentThreads,
-  getAdminVideoComments,
-  getVideoThreadComments,
-  addVideoCommentThread,
-  addVideoCommentReply,
-  findCommentId,
-  deleteVideoComment
-}
diff --git a/shared/models/videos/comment/index.ts b/shared/models/videos/comment/index.ts
index 7b9261a36..80c6c0724 100644
--- a/shared/models/videos/comment/index.ts
+++ b/shared/models/videos/comment/index.ts
@@ -1 +1,2 @@
+export * from './video-comment-create.model'
 export * from './video-comment.model'
diff --git a/shared/models/videos/comment/video-comment-create.model.ts b/shared/models/videos/comment/video-comment-create.model.ts
new file mode 100644
index 000000000..1f0135405
--- /dev/null
+++ b/shared/models/videos/comment/video-comment-create.model.ts
@@ -0,0 +1,3 @@
+export interface VideoCommentCreate {
+  text: string
+}
diff --git a/shared/models/videos/comment/video-comment.model.ts b/shared/models/videos/comment/video-comment.model.ts
index 79c0e4c0a..5a96f9d4a 100644
--- a/shared/models/videos/comment/video-comment.model.ts
+++ b/shared/models/videos/comment/video-comment.model.ts
@@ -1,3 +1,4 @@
+import { ResultList } from '@shared/models/common'
 import { Account } from '../../actors'
 
 export interface VideoComment {
@@ -36,11 +37,9 @@ export interface VideoCommentAdmin {
   }
 }
 
+export type VideoCommentThreads = ResultList<VideoComment> & { totalNotDeletedComments: number }
+
 export interface VideoCommentThreadTree {
   comment: VideoComment
   children: VideoCommentThreadTree[]
 }
-
-export interface VideoCommentCreate {
-  text: string
-}