diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 403e1e5..ae814bc 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -20,6 +20,9 @@
         <testsuite name="api">
             <directory>./tests/TestCase/Api</directory>
         </testsuite>
+        <testsuite name="e2e">
+            <directory>./tests/TestCase/Integration</directory>
+        </testsuite>
     </testsuites>
 
     <extensions>
diff --git a/tests/Fixture/IndividualsFixture.php b/tests/Fixture/IndividualsFixture.php
index 13aecdf..9e33d53 100644
--- a/tests/Fixture/IndividualsFixture.php
+++ b/tests/Fixture/IndividualsFixture.php
@@ -15,6 +15,7 @@ class IndividualsFixture extends TestFixture
     public const INDIVIDUAL_ORG_ADMIN_ID = 3;
     public const INDIVIDUAL_REGULAR_USER_ID = 4;
     public const INDIVIDUAL_A_ID = 5;
+    public const INDIVIDUAL_B_ID = 6;
 
     public function init(): void
     {
@@ -70,6 +71,16 @@ class IndividualsFixture extends TestFixture
                 'position' => 'user',
                 'created' => $faker->dateTime()->getTimestamp(),
                 'modified' => $faker->dateTime()->getTimestamp()
+            ],
+            [
+                'id' => self::INDIVIDUAL_B_ID,
+                'uuid' => $faker->uuid(),
+                'email' => $faker->email(),
+                'first_name' => $faker->firstName,
+                'last_name' => $faker->lastName,
+                'position' => 'user',
+                'created' => $faker->dateTime()->getTimestamp(),
+                'modified' => $faker->dateTime()->getTimestamp()
             ]
         ];
         parent::init();
diff --git a/tests/README.md b/tests/README.md
index 434f84a..bfdead7 100644
--- a/tests/README.md
+++ b/tests/README.md
@@ -59,6 +59,7 @@ $ vendor/bin/phpunit --testsuite=api --testdox
 Available suites:
 * `app`: runs all test suites
 * `api`: runs only api tests
+* `e2e`: runs only integration tests (requires wiremock running)
 * `controller`: runs only controller tests
 * _to be continued ..._
 
diff --git a/tests/TestCase/Api/Users/AddUserApiTest.php b/tests/TestCase/Api/Users/AddUserApiTest.php
index 3437d29..8d10139 100644
--- a/tests/TestCase/Api/Users/AddUserApiTest.php
+++ b/tests/TestCase/Api/Users/AddUserApiTest.php
@@ -6,7 +6,7 @@ namespace App\Test\TestCase\Api\Users;
 
 use Cake\TestSuite\TestCase;
 use App\Test\Fixture\AuthKeysFixture;
-use App\Test\Fixture\UsersFixture;
+use App\Test\Fixture\IndividualsFixture;
 use App\Test\Fixture\OrganisationsFixture;
 use App\Test\Fixture\RolesFixture;
 use App\Test\Helper\ApiTestTrait;
@@ -31,18 +31,20 @@ class AddUserApiTest extends TestCase
         $this->post(
             self::ENDPOINT,
             [
-                'individual_id' => UsersFixture::USER_REGULAR_USER_ID,
+                'individual_id' => IndividualsFixture::INDIVIDUAL_B_ID,
                 'organisation_id' => OrganisationsFixture::ORGANISATION_A_ID,
                 'role_id' => RolesFixture::ROLE_REGULAR_USER_ID,
                 'disabled' => false,
-                'username' => 'test',
+                'username' => 'test123',
                 'password' => 'Password123456!',
             ]
         );
 
+        print_r($this->getJsonResponseAsArray());
+
         $this->assertResponseOk();
-        $this->assertResponseContains('"username": "test"');
-        $this->assertDbRecordExists('Users', ['username' => 'test']);
+        $this->assertResponseContains('"username": "test123"');
+        $this->assertDbRecordExists('Users', ['username' => 'test123']);
     }
 
     public function testAddUserNotAllowedAsRegularUser(): void
@@ -51,7 +53,7 @@ class AddUserApiTest extends TestCase
         $this->post(
             self::ENDPOINT,
             [
-                'individual_id' => UsersFixture::USER_REGULAR_USER_ID,
+                'individual_id' => IndividualsFixture::INDIVIDUAL_B_ID,
                 'organisation_id' => OrganisationsFixture::ORGANISATION_A_ID,
                 'role_id' => RolesFixture::ROLE_REGULAR_USER_ID,
                 'disabled' => false,
@@ -61,6 +63,6 @@ class AddUserApiTest extends TestCase
         );
 
         $this->assertResponseCode(405);
-        $this->assertDbRecordNotExists('Users', ['username' => 'test']);
+        $this->assertDbRecordNotExists('Users', ['username' => 'test123']);
     }
 }
diff --git a/tests/TestCase/Integration/Broods/TestBroodConnectionApiTest.php b/tests/TestCase/Integration/Broods/TestBroodConnectionApiTest.php
new file mode 100644
index 0000000..8f0a0df
--- /dev/null
+++ b/tests/TestCase/Integration/Broods/TestBroodConnectionApiTest.php
@@ -0,0 +1,65 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Test\TestCase\Integration\Broods;
+
+use Cake\TestSuite\TestCase;
+use App\Test\Fixture\AuthKeysFixture;
+use App\Test\Fixture\BroodsFixture;
+use App\Test\Helper\ApiTestTrait;
+use App\Test\Helper\WireMockTestTrait;
+use \WireMock\Client\WireMock;
+
+class TestBroodConnectionApiTest extends TestCase
+{
+    use ApiTestTrait;
+    use WireMockTestTrait;
+
+    protected const ENDPOINT = '/broods/testConnection';
+
+    protected $fixtures = [
+        'app.Organisations',
+        'app.Individuals',
+        'app.Roles',
+        'app.Users',
+        'app.AuthKeys',
+        'app.Broods'
+    ];
+
+    public function testTestBroodConnection(): void
+    {
+        $this->setAuthToken(AuthKeysFixture::ADMIN_API_KEY);
+        $this->initializeWireMock();
+        $stub = $this->mockCerebrateStatusResponse();
+
+        $url = sprintf('%s/%d', self::ENDPOINT, BroodsFixture::BROOD_WIREMOCK_ID);
+        $this->get($url);
+
+        $this->verifyStubCalled($stub);
+        $this->assertResponseOk();
+        $this->assertResponseContains('"user": "wiremock"');
+    }
+
+    private function mockCerebrateStatusResponse(): \WireMock\Stubbing\StubMapping
+    {
+        return $this->getWireMock()->stubFor(
+            WireMock::get(WireMock::urlEqualTo('/instance/status.json'))
+                ->willReturn(WireMock::aResponse()
+                    ->withHeader('Content-Type', 'application/json')
+                    ->withBody((string)json_encode(
+                        [
+                            "version" => "0.1",
+                            "application" => "Cerebrate",
+                            "user" => [
+                                "id" => 1,
+                                "username" => "wiremock",
+                                "role" => [
+                                    "id" => 1
+                                ]
+                            ]
+                        ]
+                    )))
+        );
+    }
+}
diff --git a/tests/TestCase/Integration/LocalTools/MispInterConnectionTest.php b/tests/TestCase/Integration/LocalTools/MispInterConnectionTest.php
new file mode 100644
index 0000000..33f9eac
--- /dev/null
+++ b/tests/TestCase/Integration/LocalTools/MispInterConnectionTest.php
@@ -0,0 +1,405 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Test\TestCase\Integration\LocalTools;
+
+use Cake\TestSuite\TestCase;
+use App\Test\Fixture\OrganisationsFixture;
+use App\Test\Fixture\AuthKeysFixture;
+use App\Test\Fixture\UsersFixture;
+use App\Test\Fixture\RolesFixture;
+use App\Test\Helper\ApiTestTrait;
+use App\Test\Helper\WireMockTestTrait;
+use \WireMock\Client\WireMock;
+
+class MispInterConnectionTest extends TestCase
+{
+    use ApiTestTrait;
+    use WireMockTestTrait;
+
+    protected $fixtures = [
+        'app.Organisations',
+        'app.Individuals',
+        'app.Roles',
+        'app.Users',
+        'app.AuthKeys',
+        'app.Broods',
+        'app.LocalTools',
+        'app.RemoteToolConnections',
+        'app.Inbox'
+    ];
+
+    /** constants related to the local Cerebrate instance */
+    private const LOCAL_CEREBRATE_URL = 'http://localhost';
+
+    /** constants related to the local MISP instance */
+    private const LOCAL_MISP_INSTANCE_URL = '/MISP_LOCAL';
+    private const LOCAL_MISP_ADMIN_USER_AUTHKEY = 'b17ce79ac0f05916f382ab06ea4790665dbc174c';
+
+    /** constants related to the remote Cerebrate instance */
+    private const REMOTE_CEREBRATE_URL = '/CEREBRATE_REMOTE';
+    private const REMOTE_CEREBRATE_AUTHKEY = 'a192ba3c749b545f9cec6b6bba0643736f6c3022';
+
+    /** constants related to the remote MISP instance */
+    private const REMOTE_MISP_SYNC_USER_ID = 333;
+    private const REMOTE_MISP_SYNC_USER_EMAIL = 'sync@misp.remote';
+    private const REMOTE_MISP_INSTANCE_URL = '/MISP_REMOTE';
+    private const REMOTE_MISP_AUTHKEY = '19ca57ecebd2fe34c1c17d729980678eb648d541';
+
+
+    public function testInterConnectMispViaCerebrate(): void
+    {
+        $this->initializeWireMock();
+        $this->setAuthToken(AuthKeysFixture::ADMIN_API_KEY);
+
+        $faker = \Faker\Factory::create();
+
+        /**
+         * 1. Create LocalTool connection to `MISP LOCAL` (local MISP instance)
+         */
+        $this->post(
+            sprintf('%s/localTools/add', self::LOCAL_CEREBRATE_URL),
+            [
+                'name' => 'MISP_LOCAL',
+                'connector' => 'MispConnector',
+                'settings' => json_encode([
+                    'url' => $this->getWireMockBaseUrl() . self::LOCAL_MISP_INSTANCE_URL,
+                    'authkey' => self::LOCAL_MISP_ADMIN_USER_AUTHKEY,
+                    'skip_ssl' => true,
+                ]),
+                'description' => 'MISP local instance',
+                'exposed' => true
+            ]
+        );
+        $this->assertResponseOk();
+        $this->assertDbRecordExists('LocalTools', ['name' => 'MISP_LOCAL']);
+
+        /**
+         * 2. Create a new Brood (connect to a remote Cerebrate instance)
+         * This step assumes that the remote Cerebrate instance is already 
+         * running and has a user created for the local Cerebrate instance.
+         * 
+         * NOTE: Uses OrganisationsFixture::ORGANISATION_A_ID from the 
+         * fixtures as the local Organisation.
+         */
+        $this->setAuthToken(AuthKeysFixture::ADMIN_API_KEY);
+        $LOCAL_BROOD_UUID = $faker->uuid;
+        $this->post(
+            '/broods/add',
+            [
+                'uuid' => $LOCAL_BROOD_UUID,
+                'name' => 'Local Brood',
+                'url' => $this->getWireMockBaseUrl() . self::REMOTE_CEREBRATE_URL,
+                'description' => $faker->text,
+                'organisation_id' => OrganisationsFixture::ORGANISATION_A_ID,
+                'trusted' => true,
+                'pull' => true,
+                'skip_proxy' => true,
+                'authkey' => self::REMOTE_CEREBRATE_AUTHKEY,
+            ]
+        );
+        $this->assertResponseOk();
+        $this->assertDbRecordExists('Broods', ['uuid' => $LOCAL_BROOD_UUID]);
+        $brood = $this->getJsonResponseAsArray();
+
+        /**
+         * 3. Create a new Cerebrate local user for the remote Cerebrate
+         * These includes:
+         *  - 3.a: Create a new Organisation
+         *  - 3.b: Create a new Individual
+         *  - 3.c: Create a new User
+         *  - 3.d: Create a new Authkey
+         */
+        // Create Organisation
+        $this->setAuthToken(AuthKeysFixture::ADMIN_API_KEY);
+        $remoteOrgUuid = $faker->uuid;
+        $this->post(
+            '/organisations/add',
+            [
+                'name' => 'Remote Organisation',
+                'description' => $faker->text,
+                'uuid' => $remoteOrgUuid,
+                'url' => 'http://cerebrate.remote',
+                'nationality' => 'US',
+                'sector' => 'sector',
+                'type' => 'type',
+            ]
+        );
+        $this->assertResponseOk();
+        $this->assertDbRecordExists('Organisations', ['uuid' => $remoteOrgUuid]);
+        $remoteOrg = $this->getJsonResponseAsArray();
+
+        // Create Individual
+        $this->setAuthToken(AuthKeysFixture::ADMIN_API_KEY);
+        $this->post(
+            '/individuals/add',
+            [
+                'email' => 'sync@cerebrate.remote',
+                'first_name' => 'Remote',
+                'last_name' => 'Cerebrate'
+            ]
+        );
+        $this->assertResponseOk();
+        $this->assertDbRecordExists('Individuals', ['email' => 'sync@cerebrate.remote']);
+        $remoteIndividual = $this->getJsonResponseAsArray();
+
+        // Create User
+        $this->setAuthToken(AuthKeysFixture::ADMIN_API_KEY);
+        $this->post(
+            '/users/add',
+            [
+                'individual_id' => $remoteIndividual['id'],
+                'organisation_id' => $remoteOrg['id'],
+                'role_id' => RolesFixture::ROLE_SYNC_ID,
+                'disabled' => false,
+                'username' => 'remote_cerebrate',
+                'password' => 'Password123456!',
+            ]
+        );
+        $this->assertResponseOk();
+        $this->assertDbRecordExists('Users', ['username' => 'remote_cerebrate']);
+        $user = $this->getJsonResponseAsArray();
+
+        // Create Authkey
+        $remoteCerebrateAuthkey = $faker->sha1;
+        $remoteAuthkeyUuid = $faker->uuid;
+        $this->setAuthToken(AuthKeysFixture::ADMIN_API_KEY);
+        $this->post(
+            '/authKeys/add',
+            [
+                'uuid' => $remoteAuthkeyUuid,
+                'authkey' => $remoteCerebrateAuthkey,
+                'expiration' => 0,
+                'user_id' => $user['id'],
+                'comment' => $faker->text
+            ]
+        );
+        $this->assertResponseOk();
+        $this->assertDbRecordExists('AuthKeys', ['uuid' => $remoteAuthkeyUuid]);
+
+        /**
+         * 4. Get remote Cerebrate exposed tools
+         */
+        $this->setAuthToken(AuthKeysFixture::ADMIN_API_KEY);
+        $this->mockCerebrateGetExposedToolsResponse('CEREBRATE_REMOTE', self::REMOTE_CEREBRATE_AUTHKEY);
+        $this->get(sprintf('/localTools/broodTools/%s', $brood['id']));
+        $this->assertResponseOk();
+        $tools = $this->getJsonResponseAsArray();
+
+        /**
+         * 5. Issue a connection request to the remote MISP instance
+         */
+        $this->setAuthToken(AuthKeysFixture::ADMIN_API_KEY);
+        $this->mockCerebrateGetExposedToolsResponse('CEREBRATE_REMOTE', self::REMOTE_CEREBRATE_AUTHKEY);
+        $this->mockMispViewOrganisationByUuid(
+            'MISP_LOCAL',
+            self::LOCAL_MISP_ADMIN_USER_AUTHKEY,
+            OrganisationsFixture::ORGANISATION_A_UUID,
+            OrganisationsFixture::ORGANISATION_A_ID
+        );
+        $this->mockMispCreateSyncUser(
+            'MISP_LOCAL',
+            self::LOCAL_MISP_ADMIN_USER_AUTHKEY,
+            self::REMOTE_MISP_SYNC_USER_ID,
+            self::REMOTE_MISP_SYNC_USER_EMAIL
+        );
+        $this->mockCerebrateCreateMispIncommingConnectionRequest(
+            'CEREBRATE_REMOTE',
+            UsersFixture::USER_ADMIN_ID,
+            self::LOCAL_CEREBRATE_URL,
+            self::REMOTE_CEREBRATE_AUTHKEY,
+            self::LOCAL_MISP_INSTANCE_URL
+        );
+        $this->post(
+            sprintf('/localTools/connectionRequest/%s/%s', $brood['id'], $tools[0]['id']),
+            [
+                'local_tool_id' => 1
+            ]
+        );
+        $this->assertResponseOk();
+
+        /**
+         * 6. Remote Cerebrate accepts the connection request
+         */
+        $this->setAuthToken(AuthKeysFixture::ADMIN_API_KEY);
+        $this->post(
+            '/inbox/createEntry/LocalTool/AcceptedRequest',
+            [
+                'email' => self::REMOTE_MISP_SYNC_USER_EMAIL,
+                'authkey' => self::REMOTE_MISP_AUTHKEY,
+                'url' => $this->getWireMockBaseUrl() . self::REMOTE_MISP_INSTANCE_URL,
+                'reflected_user_id' => self::REMOTE_MISP_SYNC_USER_ID,
+                'connectorName' => 'MispConnector',
+                'cerebrateURL' => $this->getWireMockBaseUrl() . self::REMOTE_CEREBRATE_URL,
+                'local_tool_id' => 1,
+                'remote_tool_id' => 1,
+                'tool_name' => 'MISP_REMOTE'
+            ]
+        );
+        $this->assertResponseOk();
+        $acceptRequest = $this->getJsonResponseAsArray();
+
+        /**
+         * 7. Finalize the connection
+         */
+        $this->setAuthToken(AuthKeysFixture::ADMIN_API_KEY);
+        $this->mockEnableMispSyncUser('MISP_LOCAL', self::LOCAL_MISP_ADMIN_USER_AUTHKEY, self::REMOTE_MISP_SYNC_USER_ID);
+        $this->mockAddMispServer(
+            'MISP_LOCAL',
+            self::LOCAL_MISP_ADMIN_USER_AUTHKEY,
+            [
+                'authkey' => self::REMOTE_MISP_AUTHKEY,
+                'url' => $this->getWireMockBaseUrl() . self::REMOTE_MISP_INSTANCE_URL,
+                'name' => 'MISP_REMOTE',
+                'remote_org_id' => OrganisationsFixture::ORGANISATION_A_ID
+            ]
+        );
+        $this->post(sprintf('/inbox/process/%s', $acceptRequest['data']['id']));
+        $this->assertResponseOk();
+        $this->assertResponseContains('"success": true');
+        $this->verifyAllStubsCalled();
+    }
+
+    private function mockCerebrateGetExposedToolsResponse(string $instance, string $cerebrateAuthkey): \WireMock\Stubbing\StubMapping
+    {
+        return $this->getWireMock()->stubFor(
+            WireMock::get(WireMock::urlEqualTo("/$instance/localTools/exposedTools"))
+                ->withHeader('Authorization', WireMock::equalTo($cerebrateAuthkey))
+                ->willReturn(WireMock::aResponse()
+                    ->withHeader('Content-Type', 'application/json')
+                    ->withBody((string)json_encode(
+                        [
+                            [
+                                "id" => 1,
+                                "name" => "MISP ($instance)",
+                                "connector" => "MispConnector",
+                            ]
+                        ]
+                    )))
+        );
+    }
+
+    private function mockMispViewOrganisationByUuid(string $instance, string $mispAuthkey, string $orgUuid, int $orgId): \WireMock\Stubbing\StubMapping
+    {
+        return $this->getWireMock()->stubFor(
+            WireMock::get(WireMock::urlEqualTo("/$instance/organisations/view/$orgUuid/limit:50"))
+                ->withHeader('Authorization', WireMock::equalTo($mispAuthkey))
+                ->willReturn(WireMock::aResponse()
+                    ->withHeader('Content-Type', 'application/json')
+                    ->withBody((string)json_encode(
+                        [
+                            "Organisation" => [
+                                "id" => $orgId,
+                                "name" => $instance . ' Organisation',
+                                "uuid" => $orgUuid,
+                                "local" => true
+                            ]
+                        ]
+                    )))
+        );
+    }
+
+    private function mockMispCreateSyncUser(string $instance, string $mispAuthkey, int $userId, string $email): \WireMock\Stubbing\StubMapping
+    {
+        $faker = \Faker\Factory::create();
+        return $this->getWireMock()->stubFor(
+            WireMock::post(WireMock::urlEqualTo("/$instance/admin/users/add"))
+                ->withHeader('Authorization', WireMock::equalTo($mispAuthkey))
+                ->willReturn(WireMock::aResponse()
+                    ->withHeader('Content-Type', 'application/json')
+                    ->withBody((string)json_encode(
+                        [
+                            "User" => [
+                                "id" => $userId,
+                                "email" => $email,
+                                "authkey" => $faker->sha1
+                            ]
+                        ]
+                    )))
+        );
+    }
+
+    private function mockCerebrateCreateMispIncommingConnectionRequest(
+        string $instance,
+        int $userId,
+        string $cerebrateUrl,
+        string $cerebrateAuthkey,
+        string $mispUrl
+    ): \WireMock\Stubbing\StubMapping {
+        $faker = \Faker\Factory::create();
+
+        return $this->getWireMock()->stubFor(
+            WireMock::post(WireMock::urlEqualTo("/$instance/inbox/createEntry/LocalTool/IncomingConnectionRequest"))
+                ->withHeader('Authorization', WireMock::equalTo($cerebrateAuthkey))
+                ->willReturn(WireMock::aResponse()
+                    ->withHeader('Content-Type', 'application/json')
+                    ->withBody((string)json_encode(
+                        [
+                            'data' => [
+                                'id' => $faker->randomNumber(),
+                                'uuid' => $faker->uuid,
+                                'origin' => $cerebrateUrl,
+                                'user_id' => $userId,
+                                'data' => [
+                                    'connectorName' => 'MispConnector',
+                                    'cerebrateURL' => $cerebrateUrl,
+                                    'url' => $mispUrl,
+                                    'tool_connector' => 'MispConnector',
+                                    'local_tool_id' => 1,
+                                    'remote_tool_id' => 1,
+                                ],
+                                'title' => 'Request for MISP Inter-connection',
+                                'scope' => 'LocalTool',
+                                'action' => 'IncomingConnectionRequest',
+                                'description' => 'Handle Phase I of inter-connection when another cerebrate instance performs the request.',
+                                'local_tool_connector_name' => 'MispConnector',
+                                'created' => date('c'),
+                                'modified' => date('c')
+                            ],
+                            'success' => true,
+                            'message' => 'LocalTool request for IncomingConnectionRequest created',
+                            'errors' => [],
+                        ]
+                    )))
+        );
+    }
+
+    private function mockEnableMispSyncUser(string $instance, string $mispAuthkey, int $userId): \WireMock\Stubbing\StubMapping
+    {
+        return $this->getWireMock()->stubFor(
+            WireMock::post(WireMock::urlEqualTo("/$instance/admin/users/edit/$userId"))
+                ->withHeader('Authorization', WireMock::equalTo($mispAuthkey))
+                ->withRequestBody(WireMock::equalToJson(json_encode(['disabled' => false])))
+                ->willReturn(WireMock::aResponse()
+                    ->withHeader('Content-Type', 'application/json')
+                    ->withBody((string)json_encode(
+                        [
+                            "User" => [
+                                "id" => $userId,
+                            ]
+                        ]
+                    )))
+        );
+    }
+
+    private function mockAddMispServer(string $instance, string $mispAuthkey, array $body): \WireMock\Stubbing\StubMapping
+    {
+        $faker = \Faker\Factory::create();
+
+        return $this->getWireMock()->stubFor(
+            WireMock::post(WireMock::urlEqualTo("/$instance/servers/add"))
+                ->withHeader('Authorization', WireMock::equalTo($mispAuthkey))
+                ->withRequestBody(WireMock::equalToJson(json_encode($body)))
+                ->willReturn(WireMock::aResponse()
+                    ->withHeader('Content-Type', 'application/json')
+                    ->withBody((string)json_encode(
+                        [
+                            'Server' => [
+                                'id' => $faker->randomNumber()
+                            ]
+                        ]
+                    )))
+        );
+    }
+}