Overview
Possible uses for webhooks
Webhook endpoint tips
Secret token
SSL verification
Branch filtering
Events
Image URL rewriting
Testing webhooks
Troubleshoot webhooks
- Webhook fails or multiple webhook requests are triggered
- Unable to get local issuer certificate
Example webhook receiver

Webhooks

Project webhooks allow you to trigger a percent-encoded URL if, for example, new code is pushed or a new issue is created. You can configure webhooks to listen for specific events like pushes, issues or merge requests. GitLab sends a POST request with data to the webhook URL.

You usually need to set up your own webhook receiver to receive information from GitLab and send it to another app, according to your requirements. We already have a built-in receiver for sending Slack notifications per project.

Overview

Webhooks are “user-defined HTTP callbacks”. They are usually triggered by some event, such as pushing code to a repository or a comment being posted to a blog. When that event occurs, the source app makes an HTTP request to the URI configured for the webhook. The action taken may be anything. Common uses are to trigger builds with continuous integration systems or to notify bug tracking systems.

Webhooks can be used to update an external issue tracker, trigger CI jobs, update a backup mirror, or even deploy to your production server.

Webhooks are available:

Per project, at a project’s Settings > Webhooks menu.
Additionally per group, at a group’s Settings > Webhooks menu.

GitLab.com enforces various webhook limits, including:

The maximum number of webhooks and their size, both per project, and per group.
The number of webhook calls per minute.

Possible uses for webhooks

You can set up a webhook in GitLab to send a notification to Slack every time a job fails.
You can integrate with Twilio to be notified via SMS every time an issue is created for a specific project or group within GitLab
You can use them to automatically assign labels to merge requests.

Webhook endpoint tips

If you are writing your own endpoint (web server) to receive GitLab webhooks, keep in mind the following:

Your endpoint should send its HTTP response as fast as possible. If the response takes longer than the configured timeout, GitLab decides the hook failed and retries it. For information on customizing this timeout, see Webhook fails or multiple webhook requests are triggered.
Your endpoint should ALWAYS return a valid HTTP response. If you do not do this then GitLab thinks the hook failed and retries it. Most HTTP libraries take care of this for you automatically but if you are writing a low-level hook this is important to remember.
GitLab ignores the HTTP status code returned by your endpoint.

Secret token

If you specify a secret token, it is sent with the hook request in the X-Gitlab-Token HTTP header. Your webhook endpoint can check that to verify that the request is legitimate.

SSL verification

By default, the SSL certificate of the webhook endpoint is verified based on an internal list of Certificate Authorities. This means the certificate cannot be self-signed.

You can turn this off in the webhook settings in your GitLab projects.

Branch filtering

Introduced in GitLab 11.3.

Push events can be filtered by branch using a branch name or wildcard pattern to limit which push events are sent to your webhook endpoint. By default the field is blank causing all push events to be sent to your webhook endpoint.

Events

Below are described the supported events.

Push events

Triggered when you push to the repository except when pushing tags.

When more than 20 commits are pushed at once, the commits webhook attribute only contains the first 20 for performance reasons. Loading detailed commit data is expensive. Note that despite only 20 commits being present in the commits attribute, the total_commits_count attribute contains the actual total.

If a branch creation push event is generated without new commits being introduced, the commits attribute in the payload is empty.

Also, if a single push includes changes for more than three (by default, depending on push_event_hooks_limit setting) branches, this hook isn’t executed.

Request header:

X-Gitlab-Event: Push Hook

Request body:

{
  "object_kind": "push",
  "before": "95790bf891e76fee5e1747ab589903a6a1f80f22",
  "after": "da1560886d4f094c3e6c9ef40349f7d38b5d27d7",
  "ref": "refs/heads/master",
  "checkout_sha": "da1560886d4f094c3e6c9ef40349f7d38b5d27d7",
  "user_id": 4,
  "user_name": "John Smith",
  "user_username": "jsmith",
  "user_email": "john@example.com",
  "user_avatar": "https://s.gravatar.com/avatar/d4c74594d841139328695756648b6bd6?s=8://s.gravatar.com/avatar/d4c74594d841139328695756648b6bd6?s=80",
  "project_id": 15,
  "project":{
    "id": 15,
    "name":"Diaspora",
    "description":"",
    "web_url":"http://example.com/mike/diaspora",
    "avatar_url":null,
    "git_ssh_url":"git@example.com:mike/diaspora.git",
    "git_http_url":"http://example.com/mike/diaspora.git",
    "namespace":"Mike",
    "visibility_level":0,
    "path_with_namespace":"mike/diaspora",
    "default_branch":"master",
    "homepage":"http://example.com/mike/diaspora",
    "url":"git@example.com:mike/diaspora.git",
    "ssh_url":"git@example.com:mike/diaspora.git",
    "http_url":"http://example.com/mike/diaspora.git"
  },
  "repository":{
    "name": "Diaspora",
    "url": "git@example.com:mike/diaspora.git",
    "description": "",
    "homepage": "http://example.com/mike/diaspora",
    "git_http_url":"http://example.com/mike/diaspora.git",
    "git_ssh_url":"git@example.com:mike/diaspora.git",
    "visibility_level":0
  },
  "commits": [
    {
      "id": "b6568db1bc1dcd7f8b4d5a946b0b91f9dacd7327",
      "message": "Update Catalan translation to e38cb41.\n\nSee https://gitlab.com/gitlab-org/gitlab for more information",
      "title": "Update Catalan translation to e38cb41.",
      "timestamp": "2011-12-12T14:27:31+02:00",
      "url": "http://example.com/mike/diaspora/commit/b6568db1bc1dcd7f8b4d5a946b0b91f9dacd7327",
      "author": {
        "name": "Jordi Mallach",
        "email": "jordi@softcatala.org"
      },
      "added": ["CHANGELOG"],
      "modified": ["app/controller/application.rb"],
      "removed": []
    },
    {
      "id": "da1560886d4f094c3e6c9ef40349f7d38b5d27d7",
      "message": "fixed readme",
      "title": "fixed readme",
      "timestamp": "2012-01-03T23:36:29+02:00",
      "url": "http://example.com/mike/diaspora/commit/da1560886d4f094c3e6c9ef40349f7d38b5d27d7",
      "author": {
        "name": "GitLab dev user",
        "email": "gitlabdev@dv6700.(none)"
      },
      "added": ["CHANGELOG"],
      "modified": ["app/controller/application.rb"],
      "removed": []
    }
  ],
  "total_commits_count": 4
}

Tag events

Triggered when you create (or delete) tags to the repository.

If a single push includes changes for more than three (by default, depending on push_event_hooks_limit setting) tags, this hook is not executed.

Request header:

X-Gitlab-Event: Tag Push Hook

Request body:

{
  "object_kind": "tag_push",
  "before": "0000000000000000000000000000000000000000",
  "after": "82b3d5ae55f7080f1e6022629cdb57bfae7cccc7",
  "ref": "refs/tags/v1.0.0",
  "checkout_sha": "82b3d5ae55f7080f1e6022629cdb57bfae7cccc7",
  "user_id": 1,
  "user_name": "John Smith",
  "user_avatar": "https://s.gravatar.com/avatar/d4c74594d841139328695756648b6bd6?s=8://s.gravatar.com/avatar/d4c74594d841139328695756648b6bd6?s=80",
  "project_id": 1,
  "project":{
    "id": 1,
    "name":"Example",
    "description":"",
    "web_url":"http://example.com/jsmith/example",
    "avatar_url":null,
    "git_ssh_url":"git@example.com:jsmith/example.git",
    "git_http_url":"http://example.com/jsmith/example.git",
    "namespace":"Jsmith",
    "visibility_level":0,
    "path_with_namespace":"jsmith/example",
    "default_branch":"master",
    "homepage":"http://example.com/jsmith/example",
    "url":"git@example.com:jsmith/example.git",
    "ssh_url":"git@example.com:jsmith/example.git",
    "http_url":"http://example.com/jsmith/example.git"
  },
  "repository":{
    "name": "Example",
    "url": "ssh://git@example.com/jsmith/example.git",
    "description": "",
    "homepage": "http://example.com/jsmith/example",
    "git_http_url":"http://example.com/jsmith/example.git",
    "git_ssh_url":"git@example.com:jsmith/example.git",
    "visibility_level":0
  },
  "commits": [],
  "total_commits_count": 0
}

Issue events

Triggered when a new issue is created or an existing issue was updated/closed/reopened.

Request header:

X-Gitlab-Event: Issue Hook

Request body:

{
  "object_kind": "issue",
  "event_type": "issue",
  "user": {
    "id": 1,
    "name": "Administrator",
    "username": "root",
    "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=40\u0026d=identicon",
    "email": "admin@example.com"
  },
  "project": {
    "id": 1,
    "name":"Gitlab Test",
    "description":"Aut reprehenderit ut est.",
    "web_url":"http://example.com/gitlabhq/gitlab-test",
    "avatar_url":null,
    "git_ssh_url":"git@example.com:gitlabhq/gitlab-test.git",
    "git_http_url":"http://example.com/gitlabhq/gitlab-test.git",
    "namespace":"GitlabHQ",
    "visibility_level":20,
    "path_with_namespace":"gitlabhq/gitlab-test",
    "default_branch":"master",
    "ci_config_path": null,
    "homepage":"http://example.com/gitlabhq/gitlab-test",
    "url":"http://example.com/gitlabhq/gitlab-test.git",
    "ssh_url":"git@example.com:gitlabhq/gitlab-test.git",
    "http_url":"http://example.com/gitlabhq/gitlab-test.git"
  },
  "object_attributes": {
    "id": 301,
    "title": "New API: create/update/delete file",
    "assignee_ids": [51],
    "assignee_id": 51,
    "author_id": 51,
    "project_id": 14,
    "created_at": "2013-12-03T17:15:43Z",
    "updated_at": "2013-12-03T17:15:43Z",
    "updated_by_id": 1,
    "last_edited_at": null,
    "last_edited_by_id": null,
    "relative_position": 0,
    "description": "Create new API for manipulations with repository",
    "milestone_id": null,
    "state_id": 1,
    "confidential": false,
    "discussion_locked": true,
    "due_date": null,
    "moved_to_id": null,
    "duplicated_to_id": null,
    "time_estimate": 0,
    "total_time_spent": 0,
    "time_change": 0,
    "human_total_time_spent": null,
    "human_time_estimate": null,
    "human_time_change": null,
    "weight": null,
    "iid": 23,
    "url": "http://example.com/diaspora/issues/23",
    "state": "opened",
    "action": "open",
    "labels": [{
        "id": 206,
        "title": "API",
        "color": "#ffffff",
        "project_id": 14,
        "created_at": "2013-12-03T17:15:43Z",
        "updated_at": "2013-12-03T17:15:43Z",
        "template": false,
        "description": "API related issues",
        "type": "ProjectLabel",
        "group_id": 41
      }]
  },
  "repository": {
    "name": "Gitlab Test",
    "url": "http://example.com/gitlabhq/gitlab-test.git",
    "description": "Aut reprehenderit ut est.",
    "homepage": "http://example.com/gitlabhq/gitlab-test"
  },
  "assignees": [{
    "name": "User1",
    "username": "user1",
    "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=40\u0026d=identicon"
  }],
  "assignee": {
    "name": "User1",
    "username": "user1",
    "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=40\u0026d=identicon"
  },
  "labels": [{
    "id": 206,
    "title": "API",
    "color": "#ffffff",
    "project_id": 14,
    "created_at": "2013-12-03T17:15:43Z",
    "updated_at": "2013-12-03T17:15:43Z",
    "template": false,
    "description": "API related issues",
    "type": "ProjectLabel",
    "group_id": 41
  }],
  "changes": {
    "updated_by_id": {
      "previous": null,
      "current": 1
    },
    "updated_at": {
      "previous": "2017-09-15 16:50:55 UTC",
      "current": "2017-09-15 16:52:00 UTC"
    },
    "labels": {
      "previous": [{
        "id": 206,
        "title": "API",
        "color": "#ffffff",
        "project_id": 14,
        "created_at": "2013-12-03T17:15:43Z",
        "updated_at": "2013-12-03T17:15:43Z",
        "template": false,
        "description": "API related issues",
        "type": "ProjectLabel",
        "group_id": 41
      }],
      "current": [{
        "id": 205,
        "title": "Platform",
        "color": "#123123",
        "project_id": 14,
        "created_at": "2013-12-03T17:15:43Z",
        "updated_at": "2013-12-03T17:15:43Z",
        "template": false,
        "description": "Platform related issues",
        "type": "ProjectLabel",
        "group_id": 41
      }]
    }
  }
}

assignee and assignee_id keys are deprecated and now show the first assignee only.

Comment events

Triggered when a new comment is made on commits, merge requests, issues, and code snippets. The note data is stored in object_attributes (for example, note or noteable_type). The payload also includes information about the target of the comment. For example, a comment on an issue includes the specific issue information under the issue key. Valid target types:

commit
merge_request
issue
snippet

Comment on commit

Request header:

X-Gitlab-Event: Note Hook

Request body:

{
  "object_kind": "note",
  "user": {
    "id": 1,
    "name": "Administrator",
    "username": "root",
    "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=40\u0026d=identicon",
    "email": "admin@example.com"
  },
  "project_id": 5,
  "project":{
    "id": 5,
    "name":"Gitlab Test",
    "description":"Aut reprehenderit ut est.",
    "web_url":"http://example.com/gitlabhq/gitlab-test",
    "avatar_url":null,
    "git_ssh_url":"git@example.com:gitlabhq/gitlab-test.git",
    "git_http_url":"http://example.com/gitlabhq/gitlab-test.git",
    "namespace":"GitlabHQ",
    "visibility_level":20,
    "path_with_namespace":"gitlabhq/gitlab-test",
    "default_branch":"master",
    "homepage":"http://example.com/gitlabhq/gitlab-test",
    "url":"http://example.com/gitlabhq/gitlab-test.git",
    "ssh_url":"git@example.com:gitlabhq/gitlab-test.git",
    "http_url":"http://example.com/gitlabhq/gitlab-test.git"
  },
  "repository":{
    "name": "Gitlab Test",
    "url": "http://example.com/gitlab-org/gitlab-test.git",
    "description": "Aut reprehenderit ut est.",
    "homepage": "http://example.com/gitlab-org/gitlab-test"
  },
  "object_attributes": {
    "id": 1243,
    "note": "This is a commit comment. How does this work?",
    "noteable_type": "Commit",
    "author_id": 1,
    "created_at": "2015-05-17 18:08:09 UTC",
    "updated_at": "2015-05-17 18:08:09 UTC",
    "project_id": 5,
    "attachment":null,
    "line_code": "bec9703f7a456cd2b4ab5fb3220ae016e3e394e3_0_1",
    "commit_id": "cfe32cf61b73a0d5e9f13e774abde7ff789b1660",
    "noteable_id": null,
    "system": false,
    "st_diff": {
      "diff": "--- /dev/null\n+++ b/six\n@@ -0,0 +1 @@\n+Subproject commit 409f37c4f05865e4fb208c771485f211a22c4c2d\n",
      "new_path": "six",
      "old_path": "six",
      "a_mode": "0",
      "b_mode": "160000",
      "new_file": true,
      "renamed_file": false,
      "deleted_file": false
    },
    "url": "http://example.com/gitlab-org/gitlab-test/commit/cfe32cf61b73a0d5e9f13e774abde7ff789b1660#note_1243"
  },
  "commit": {
    "id": "cfe32cf61b73a0d5e9f13e774abde7ff789b1660",
    "message": "Add submodule\n\nSigned-off-by: Example User \u003cuser@example.com.com\u003e\n",
    "timestamp": "2014-02-27T10:06:20+02:00",
    "url": "http://example.com/gitlab-org/gitlab-test/commit/cfe32cf61b73a0d5e9f13e774abde7ff789b1660",
    "author": {
      "name": "Example User",
      "email": "user@example.com"
    }
  }
}

Comment on merge request

Request header:

X-Gitlab-Event: Note Hook

Request body:

{
  "object_kind": "note",
  "user": {
    "id": 1,
    "name": "Administrator",
    "username": "root",
    "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=40\u0026d=identicon",
    "email": "admin@example.com"
  },
  "project_id": 5,
  "project":{
    "id": 5,
    "name":"Gitlab Test",
    "description":"Aut reprehenderit ut est.",
    "web_url":"http://example.com/gitlab-org/gitlab-test",
    "avatar_url":null,
    "git_ssh_url":"git@example.com:gitlab-org/gitlab-test.git",
    "git_http_url":"http://example.com/gitlab-org/gitlab-test.git",
    "namespace":"Gitlab Org",
    "visibility_level":10,
    "path_with_namespace":"gitlab-org/gitlab-test",
    "default_branch":"master",
    "homepage":"http://example.com/gitlab-org/gitlab-test",
    "url":"http://example.com/gitlab-org/gitlab-test.git",
    "ssh_url":"git@example.com:gitlab-org/gitlab-test.git",
    "http_url":"http://example.com/gitlab-org/gitlab-test.git"
  },
  "repository":{
    "name": "Gitlab Test",
    "url": "http://localhost/gitlab-org/gitlab-test.git",
    "description": "Aut reprehenderit ut est.",
    "homepage": "http://example.com/gitlab-org/gitlab-test"
  },
  "object_attributes": {
    "id": 1244,
    "note": "This MR needs work.",
    "noteable_type": "MergeRequest",
    "author_id": 1,
    "created_at": "2015-05-17 18:21:36 UTC",
    "updated_at": "2015-05-17 18:21:36 UTC",
    "project_id": 5,
    "attachment": null,
    "line_code": null,
    "commit_id": "",
    "noteable_id": 7,
    "system": false,
    "st_diff": null,
    "url": "http://example.com/gitlab-org/gitlab-test/merge_requests/1#note_1244"
  },
  "merge_request": {
    "id": 7,
    "target_branch": "markdown",
    "source_branch": "master",
    "source_project_id": 5,
    "author_id": 8,
    "assignee_id": 28,
    "title": "Tempora et eos debitis quae laborum et.",
    "created_at": "2015-03-01 20:12:53 UTC",
    "updated_at": "2015-03-21 18:27:27 UTC",
    "milestone_id": 11,
    "state": "opened",
    "merge_status": "cannot_be_merged",
    "target_project_id": 5,
    "iid": 1,
    "description": "Et voluptas corrupti assumenda temporibus. Architecto cum animi eveniet amet asperiores. Vitae numquam voluptate est natus sit et ad id.",
    "position": 0,
    "source":{
      "name":"Gitlab Test",
      "description":"Aut reprehenderit ut est.",
      "web_url":"http://example.com/gitlab-org/gitlab-test",
      "avatar_url":null,
      "git_ssh_url":"git@example.com:gitlab-org/gitlab-test.git",
      "git_http_url":"http://example.com/gitlab-org/gitlab-test.git",
      "namespace":"Gitlab Org",
      "visibility_level":10,
      "path_with_namespace":"gitlab-org/gitlab-test",
      "default_branch":"master",
      "homepage":"http://example.com/gitlab-org/gitlab-test",
      "url":"http://example.com/gitlab-org/gitlab-test.git",
      "ssh_url":"git@example.com:gitlab-org/gitlab-test.git",
      "http_url":"http://example.com/gitlab-org/gitlab-test.git"
    },
    "target": {
      "name":"Gitlab Test",
      "description":"Aut reprehenderit ut est.",
      "web_url":"http://example.com/gitlab-org/gitlab-test",
      "avatar_url":null,
      "git_ssh_url":"git@example.com:gitlab-org/gitlab-test.git",
      "git_http_url":"http://example.com/gitlab-org/gitlab-test.git",
      "namespace":"Gitlab Org",
      "visibility_level":10,
      "path_with_namespace":"gitlab-org/gitlab-test",
      "default_branch":"master",
      "homepage":"http://example.com/gitlab-org/gitlab-test",
      "url":"http://example.com/gitlab-org/gitlab-test.git",
      "ssh_url":"git@example.com:gitlab-org/gitlab-test.git",
      "http_url":"http://example.com/gitlab-org/gitlab-test.git"
    },
    "last_commit": {
      "id": "562e173be03b8ff2efb05345d12df18815438a4b",
      "message": "Merge branch 'another-branch' into 'master'\n\nCheck in this test\n",
      "timestamp": "2015-04-08T21: 00:25-07:00",
      "url": "http://example.com/gitlab-org/gitlab-test/commit/562e173be03b8ff2efb05345d12df18815438a4b",
      "author": {
        "name": "John Smith",
        "email": "john@example.com"
      }
    },
    "work_in_progress": false,
    "assignee": {
      "name": "User1",
      "username": "user1",
      "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=40\u0026d=identicon"
    }
  }
}

Comment on issue

Request header:

X-Gitlab-Event: Note Hook

Request body:

{
  "object_kind": "note",
  "user": {
    "id": 1,
    "name": "Administrator",
    "username": "root",
    "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=40\u0026d=identicon",
    "email": "admin@example.com"
  },
  "project_id": 5,
  "project":{
    "id": 5,
    "name":"Gitlab Test",
    "description":"Aut reprehenderit ut est.",
    "web_url":"http://example.com/gitlab-org/gitlab-test",
    "avatar_url":null,
    "git_ssh_url":"git@example.com:gitlab-org/gitlab-test.git",
    "git_http_url":"http://example.com/gitlab-org/gitlab-test.git",
    "namespace":"Gitlab Org",
    "visibility_level":10,
    "path_with_namespace":"gitlab-org/gitlab-test",
    "default_branch":"master",
    "homepage":"http://example.com/gitlab-org/gitlab-test",
    "url":"http://example.com/gitlab-org/gitlab-test.git",
    "ssh_url":"git@example.com:gitlab-org/gitlab-test.git",
    "http_url":"http://example.com/gitlab-org/gitlab-test.git"
  },
  "repository":{
    "name":"diaspora",
    "url":"git@example.com:mike/diaspora.git",
    "description":"",
    "homepage":"http://example.com/mike/diaspora"
  },
  "object_attributes": {
    "id": 1241,
    "note": "Hello world",
    "noteable_type": "Issue",
    "author_id": 1,
    "created_at": "2015-05-17 17:06:40 UTC",
    "updated_at": "2015-05-17 17:06:40 UTC",
    "project_id": 5,
    "attachment": null,
    "line_code": null,
    "commit_id": "",
    "noteable_id": 92,
    "system": false,
    "st_diff": null,
    "url": "http://example.com/gitlab-org/gitlab-test/issues/17#note_1241"
  },
  "issue": {
    "id": 92,
    "title": "test",
    "assignee_ids": [],
    "assignee_id": null,
    "author_id": 1,
    "project_id": 5,
    "created_at": "2015-04-12 14:53:17 UTC",
    "updated_at": "2015-04-26 08:28:42 UTC",
    "position": 0,
    "branch_name": null,
    "description": "test",
    "milestone_id": null,
    "state": "closed",
    "iid": 17,
    "labels": [
      {
        "id": 25,
        "title": "Afterpod",
        "color": "#3e8068",
        "project_id": null,
        "created_at": "2019-06-05T14:32:20.211Z",
        "updated_at": "2019-06-05T14:32:20.211Z",
        "template": false,
        "description": null,
        "type": "GroupLabel",
        "group_id": 4
      },
      {
        "id": 86,
        "title": "Element",
        "color": "#231afe",
        "project_id": 4,
        "created_at": "2019-06-05T14:32:20.637Z",
        "updated_at": "2019-06-05T14:32:20.637Z",
        "template": false,
        "description": null,
        "type": "ProjectLabel",
        "group_id": null
      }
    ]
  }
}

assignee_id field is deprecated and now shows the first assignee only.

Comment on code snippet

Request header:

X-Gitlab-Event: Note Hook

Request body:

{
  "object_kind": "note",
  "user": {
    "id": 1,
    "name": "Administrator",
    "username": "root",
    "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=40\u0026d=identicon",
    "email": "admin@example.com"
  },
  "project_id": 5,
  "project":{
    "id": 5,
    "name":"Gitlab Test",
    "description":"Aut reprehenderit ut est.",
    "web_url":"http://example.com/gitlab-org/gitlab-test",
    "avatar_url":null,
    "git_ssh_url":"git@example.com:gitlab-org/gitlab-test.git",
    "git_http_url":"http://example.com/gitlab-org/gitlab-test.git",
    "namespace":"Gitlab Org",
    "visibility_level":10,
    "path_with_namespace":"gitlab-org/gitlab-test",
    "default_branch":"master",
    "homepage":"http://example.com/gitlab-org/gitlab-test",
    "url":"http://example.com/gitlab-org/gitlab-test.git",
    "ssh_url":"git@example.com:gitlab-org/gitlab-test.git",
    "http_url":"http://example.com/gitlab-org/gitlab-test.git"
  },
  "repository":{
    "name":"Gitlab Test",
    "url":"http://example.com/gitlab-org/gitlab-test.git",
    "description":"Aut reprehenderit ut est.",
    "homepage":"http://example.com/gitlab-org/gitlab-test"
  },
  "object_attributes": {
    "id": 1245,
    "note": "Is this snippet doing what it's supposed to be doing?",
    "noteable_type": "Snippet",
    "author_id": 1,
    "created_at": "2015-05-17 18:35:50 UTC",
    "updated_at": "2015-05-17 18:35:50 UTC",
    "project_id": 5,
    "attachment": null,
    "line_code": null,
    "commit_id": "",
    "noteable_id": 53,
    "system": false,
    "st_diff": null,
    "url": "http://example.com/gitlab-org/gitlab-test/snippets/53#note_1245"
  },
  "snippet": {
    "id": 53,
    "title": "test",
    "content": "puts 'Hello world'",
    "author_id": 1,
    "project_id": 5,
    "created_at": "2015-04-09 02:40:38 UTC",
    "updated_at": "2015-04-09 02:40:38 UTC",
    "file_name": "test.rb",
    "expires_at": null,
    "type": "ProjectSnippet",
    "visibility_level": 0
  }
}

Merge request events

Triggered when a new merge request is created, an existing merge request was updated/merged/closed or a commit is added in the source branch.

Request header:

X-Gitlab-Event: Merge Request Hook

Request body:

{
  "object_kind": "merge_request",
  "user": {
    "id": 1,
    "name": "Administrator",
    "username": "root",
    "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=40\u0026d=identicon",
    "email": "admin@example.com"
  },
  "project": {
    "id": 1,
    "name":"Gitlab Test",
    "description":"Aut reprehenderit ut est.",
    "web_url":"http://example.com/gitlabhq/gitlab-test",
    "avatar_url":null,
    "git_ssh_url":"git@example.com:gitlabhq/gitlab-test.git",
    "git_http_url":"http://example.com/gitlabhq/gitlab-test.git",
    "namespace":"GitlabHQ",
    "visibility_level":20,
    "path_with_namespace":"gitlabhq/gitlab-test",
    "default_branch":"master",
    "homepage":"http://example.com/gitlabhq/gitlab-test",
    "url":"http://example.com/gitlabhq/gitlab-test.git",
    "ssh_url":"git@example.com:gitlabhq/gitlab-test.git",
    "http_url":"http://example.com/gitlabhq/gitlab-test.git"
  },
  "repository": {
    "name": "Gitlab Test",
    "url": "http://example.com/gitlabhq/gitlab-test.git",
    "description": "Aut reprehenderit ut est.",
    "homepage": "http://example.com/gitlabhq/gitlab-test"
  },
  "object_attributes": {
    "id": 99,
    "target_branch": "master",
    "source_branch": "ms-viewport",
    "source_project_id": 14,
    "author_id": 51,
    "assignee_id": 6,
    "title": "MS-Viewport",
    "created_at": "2013-12-03T17:23:34Z",
    "updated_at": "2013-12-03T17:23:34Z",
    "milestone_id": null,
    "state": "opened",
    "merge_status": "unchecked",
    "target_project_id": 14,
    "iid": 1,
    "description": "",
    "source": {
      "name":"Awesome Project",
      "description":"Aut reprehenderit ut est.",
      "web_url":"http://example.com/awesome_space/awesome_project",
      "avatar_url":null,
      "git_ssh_url":"git@example.com:awesome_space/awesome_project.git",
      "git_http_url":"http://example.com/awesome_space/awesome_project.git",
      "namespace":"Awesome Space",
      "visibility_level":20,
      "path_with_namespace":"awesome_space/awesome_project",
      "default_branch":"master",
      "homepage":"http://example.com/awesome_space/awesome_project",
      "url":"http://example.com/awesome_space/awesome_project.git",
      "ssh_url":"git@example.com:awesome_space/awesome_project.git",
      "http_url":"http://example.com/awesome_space/awesome_project.git"
    },
    "target": {
      "name":"Awesome Project",
      "description":"Aut reprehenderit ut est.",
      "web_url":"http://example.com/awesome_space/awesome_project",
      "avatar_url":null,
      "git_ssh_url":"git@example.com:awesome_space/awesome_project.git",
      "git_http_url":"http://example.com/awesome_space/awesome_project.git",
      "namespace":"Awesome Space",
      "visibility_level":20,
      "path_with_namespace":"awesome_space/awesome_project",
      "default_branch":"master",
      "homepage":"http://example.com/awesome_space/awesome_project",
      "url":"http://example.com/awesome_space/awesome_project.git",
      "ssh_url":"git@example.com:awesome_space/awesome_project.git",
      "http_url":"http://example.com/awesome_space/awesome_project.git"
    },
    "last_commit": {
      "id": "da1560886d4f094c3e6c9ef40349f7d38b5d27d7",
      "message": "fixed readme",
      "timestamp": "2012-01-03T23:36:29+02:00",
      "url": "http://example.com/awesome_space/awesome_project/commits/da1560886d4f094c3e6c9ef40349f7d38b5d27d7",
      "author": {
        "name": "GitLab dev user",
        "email": "gitlabdev@dv6700.(none)"
      }
    },
    "work_in_progress": false,
    "url": "http://example.com/diaspora/merge_requests/1",
    "action": "open",
    "assignee": {
      "name": "User1",
      "username": "user1",
      "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=40\u0026d=identicon"
    }
  },
  "labels": [{
    "id": 206,
    "title": "API",
    "color": "#ffffff",
    "project_id": 14,
    "created_at": "2013-12-03T17:15:43Z",
    "updated_at": "2013-12-03T17:15:43Z",
    "template": false,
    "description": "API related issues",
    "type": "ProjectLabel",
    "group_id": 41
  }],
  "changes": {
    "updated_by_id": {
      "previous": null,
      "current": 1
    },
    "updated_at": {
      "previous": "2017-09-15 16:50:55 UTC",
      "current":"2017-09-15 16:52:00 UTC"
    },
    "labels": {
      "previous": [{
        "id": 206,
        "title": "API",
        "color": "#ffffff",
        "project_id": 14,
        "created_at": "2013-12-03T17:15:43Z",
        "updated_at": "2013-12-03T17:15:43Z",
        "template": false,
        "description": "API related issues",
        "type": "ProjectLabel",
        "group_id": 41
      }],
      "current": [{
        "id": 205,
        "title": "Platform",
        "color": "#123123",
        "project_id": 14,
        "created_at": "2013-12-03T17:15:43Z",
        "updated_at": "2013-12-03T17:15:43Z",
        "template": false,
        "description": "Platform related issues",
        "type": "ProjectLabel",
        "group_id": 41
      }]
    }
  }
}

Wiki Page events

Triggered when a wiki page is created, updated or deleted.

Request Header:

X-Gitlab-Event: Wiki Page Hook

Request Body:

{
  "object_kind": "wiki_page",
  "user": {
    "id": 1,
    "name": "Administrator",
    "username": "root",
    "avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=80\u0026d=identicon",
    "email": "admin@example.com"
  },
  "project": {
    "id": 1,
    "name": "awesome-project",
    "description": "This is awesome",
    "web_url": "http://example.com/root/awesome-project",
    "avatar_url": null,
    "git_ssh_url": "git@example.com:root/awesome-project.git",
    "git_http_url": "http://example.com/root/awesome-project.git",
    "namespace": "root",
    "visibility_level": 0,
    "path_with_namespace": "root/awesome-project",
    "default_branch": "master",
    "homepage": "http://example.com/root/awesome-project",
    "url": "git@example.com:root/awesome-project.git",
    "ssh_url": "git@example.com:root/awesome-project.git",
    "http_url": "http://example.com/root/awesome-project.git"
  },
  "wiki": {
    "web_url": "http://example.com/root/awesome-project/-/wikis/home",
    "git_ssh_url": "git@example.com:root/awesome-project.wiki.git",
    "git_http_url": "http://example.com/root/awesome-project.wiki.git",
    "path_with_namespace": "root/awesome-project.wiki",
    "default_branch": "master"
  },
  "object_attributes": {
    "title": "Awesome",
    "content": "awesome content goes here",
    "format": "markdown",
    "message": "adding an awesome page to the wiki",
    "slug": "awesome",
    "url": "http://example.com/root/awesome-project/-/wikis/awesome",
    "action": "create"
  }
}

Pipeline events

In GitLab 13.9 and later, the pipeline webhook returns only the latest jobs.

Triggered on status change of Pipeline.

Request Header:

X-Gitlab-Event: Pipeline Hook

Request Body:

{
   "object_kind": "pipeline",
   "object_attributes":{
      "id": 31,
      "ref": "master",
      "tag": false,
      "sha": "bcbb5ec396a2c0f828686f14fac9b80b780504f2",
      "before_sha": "bcbb5ec396a2c0f828686f14fac9b80b780504f2",
      "source": "merge_request_event",
      "status": "success",
      "stages":[
         "build",
         "test",
         "deploy"
      ],
      "created_at": "2016-08-12 15:23:28 UTC",
      "finished_at": "2016-08-12 15:26:29 UTC",
      "duration": 63,
      "variables": [
        {
          "key": "NESTOR_PROD_ENVIRONMENT",
          "value": "us-west-1"
        }
      ]
   },
    "merge_request": {
      "id": 1,
      "iid": 1,
      "title": "Test",
      "source_branch": "test",
      "source_project_id": 1,
      "target_branch": "master",
      "target_project_id": 1,
      "state": "opened",
      "merge_status": "can_be_merged",
      "url": "http://192.168.64.1:3005/gitlab-org/gitlab-test/merge_requests/1"
   },
   "user":{
      "id": 1,
      "name": "Administrator",
      "username": "root",
      "avatar_url": "http://www.gravatar.com/avatar/e32bd13e2add097461cb96824b7a829c?s=80\u0026d=identicon",
      "email": "user_email@gitlab.com"
   },
   "project":{
      "id": 1,
      "name": "Gitlab Test",
      "description": "Atque in sunt eos similique dolores voluptatem.",
      "web_url": "http://192.168.64.1:3005/gitlab-org/gitlab-test",
      "avatar_url": null,
      "git_ssh_url": "git@192.168.64.1:gitlab-org/gitlab-test.git",
      "git_http_url": "http://192.168.64.1:3005/gitlab-org/gitlab-test.git",
      "namespace": "Gitlab Org",
      "visibility_level": 20,
      "path_with_namespace": "gitlab-org/gitlab-test",
      "default_branch": "master"
   },
   "commit":{
      "id": "bcbb5ec396a2c0f828686f14fac9b80b780504f2",
      "message": "test\n",
      "timestamp": "2016-08-12T17:23:21+02:00",
      "url": "http://example.com/gitlab-org/gitlab-test/commit/bcbb5ec396a2c0f828686f14fac9b80b780504f2",
      "author":{
         "name": "User",
         "email": "user@gitlab.com"
      }
   },
   "builds":[
      {
         "id": 380,
         "stage": "deploy",
         "name": "production",
         "status": "skipped",
         "created_at": "2016-08-12 15:23:28 UTC",
         "started_at": null,
         "finished_at": null,
         "when": "manual",
         "manual": true,
         "allow_failure": false,
         "user":{
            "id": 1,
            "name": "Administrator",
            "username": "root",
            "avatar_url": "http://www.gravatar.com/avatar/e32bd13e2add097461cb96824b7a829c?s=80\u0026d=identicon",
            "email": "admin@example.com"
         },
         "runner": null,
         "artifacts_file":{
            "filename": null,
            "size": null
         },
         "environment": {
           "name": "production",
           "action": "start"
         }
      },
      {
         "id": 377,
         "stage": "test",
         "name": "test-image",
         "status": "success",
         "created_at": "2016-08-12 15:23:28 UTC",
         "started_at": "2016-08-12 15:26:12 UTC",
         "finished_at": null,
         "when": "on_success",
         "manual": false,
         "allow_failure": false,
         "user":{
            "id": 1,
            "name": "Administrator",
            "username": "root",
            "avatar_url": "http://www.gravatar.com/avatar/e32bd13e2add097461cb96824b7a829c?s=80\u0026d=identicon",
            "email": "admin@example.com"
         },
         "runner": {
            "id": 380987,
            "description": "shared-runners-manager-6.gitlab.com",
            "active": true,
            "runner_type": "instance_type",
            "is_shared": true,
            "tags": [
              "linux",
              "docker",
              "shared-runner"
            ]
         },
         "artifacts_file":{
            "filename": null,
            "size": null
         },
         "environment": null
      },
      {
         "id": 378,
         "stage": "test",
         "name": "test-build",
         "status": "success",
         "created_at": "2016-08-12 15:23:28 UTC",
         "started_at": "2016-08-12 15:26:12 UTC",
         "finished_at": "2016-08-12 15:26:29 UTC",
         "when": "on_success",
         "manual": false,
         "allow_failure": false,
         "user":{
            "id": 1,
            "name": "Administrator",
            "username": "root",
            "avatar_url": "http://www.gravatar.com/avatar/e32bd13e2add097461cb96824b7a829c?s=80\u0026d=identicon",
            "email": "admin@example.com"
         },
         "runner": {
            "id":380987,
            "description":"shared-runners-manager-6.gitlab.com",
            "active":true,
            "runner_type": "instance_type",
            "is_shared": true,
            "tags": [
              "linux",
              "docker"
            ]
         },
         "artifacts_file":{
            "filename": null,
            "size": null
         },
         "environment": null
      },
      {
         "id": 376,
         "stage": "build",
         "name": "build-image",
         "status": "success",
         "created_at": "2016-08-12 15:23:28 UTC",
         "started_at": "2016-08-12 15:24:56 UTC",
         "finished_at": "2016-08-12 15:25:26 UTC",
         "when": "on_success",
         "manual": false,
         "allow_failure": false,
         "user":{
            "id": 1,
            "name": "Administrator",
            "username": "root",
            "avatar_url": "http://www.gravatar.com/avatar/e32bd13e2add097461cb96824b7a829c?s=80\u0026d=identicon",
            "email": "admin@example.com"
         },
         "runner": {
            "id": 380987,
            "description": "shared-runners-manager-6.gitlab.com",
            "active": true,
            "runner_type": "instance_type",
            "is_shared": true,
            "tags": [
              "linux",
              "docker"
            ]
         },
         "artifacts_file":{
            "filename": null,
            "size": null
         },
         "environment": null
      },
      {
         "id": 379,
         "stage": "deploy",
         "name": "staging",
         "status": "created",
         "created_at": "2016-08-12 15:23:28 UTC",
         "started_at": null,
         "finished_at": null,
         "when": "on_success",
         "manual": false,
         "allow_failure": false,
         "user":{
            "id": 1,
            "name": "Administrator",
            "username": "root",
            "avatar_url": "http://www.gravatar.com/avatar/e32bd13e2add097461cb96824b7a829c?s=80\u0026d=identicon",
            "email": "admin@example.com"
         },
         "runner": null,
         "artifacts_file":{
            "filename": null,
            "size": null
         },
         "environment": {
           "name": "staging",
           "action": "start"
         }
      }
   ]
}

Job events

Triggered on status change of a job.

Request Header:

X-Gitlab-Event: Job Hook

Request Body:

{
  "object_kind": "build",
  "ref": "gitlab-script-trigger",
  "tag": false,
  "before_sha": "2293ada6b400935a1378653304eaf6221e0fdb8f",
  "sha": "2293ada6b400935a1378653304eaf6221e0fdb8f",
  "build_id": 1977,
  "build_name": "test",
  "build_stage": "test",
  "build_status": "created",
  "build_created_at": "2021-02-23T02:41:37.886Z",
  "build_started_at": null,
  "build_finished_at": null,
  "build_duration": null,
  "build_allow_failure": false,
  "build_failure_reason": "script_failure",
  "pipeline_id": 2366,
  "project_id": 380,
  "project_name": "gitlab-org/gitlab-test",
  "user": {
    "id": 3,
    "name": "User",
    "email": "user@gitlab.com",
    "avatar_url": "http://www.gravatar.com/avatar/e32bd13e2add097461cb96824b7a829c?s=80\u0026d=identicon",
  },
  "commit": {
    "id": 2366,
    "sha": "2293ada6b400935a1378653304eaf6221e0fdb8f",
    "message": "test\n",
    "author_name": "User",
    "author_email": "user@gitlab.com",
    "status": "created",
    "duration": null,
    "started_at": null,
    "finished_at": null
  },
  "repository": {
    "name": "gitlab_test",
    "description": "Atque in sunt eos similique dolores voluptatem.",
    "homepage": "http://192.168.64.1:3005/gitlab-org/gitlab-test",
    "git_ssh_url": "git@192.168.64.1:gitlab-org/gitlab-test.git",
    "git_http_url": "http://192.168.64.1:3005/gitlab-org/gitlab-test.git",
    "visibility_level": 20
  },
  "runner": {
    "active": true,
    "runner_type": "project_type", 
    "is_shared": false,
    "id": 380987,
    "description": "shared-runners-manager-6.gitlab.com",
    "tags": [
      "linux",
      "docker"
    ]
  },
  "environment": null
}

Note that commit.id is the ID of the pipeline, not the ID of the commit.

Deployment events

Triggered when a deployment:

Starts (Introduced in GitLab 13.5.)
Succeeds
Fails
Is cancelled

Request Header:

X-Gitlab-Event: Deployment Hook

Request Body:

{
  "object_kind": "deployment",
  "status": "success",
  "status_changed_at":"2021-04-28 21:50:00 +0200",
  "deployable_id": 796,
  "deployable_url": "http://10.126.0.2:3000/root/test-deployment-webhooks/-/jobs/796",
  "environment": "staging",
  "project": {
    "id": 30,
    "name": "test-deployment-webhooks",
    "description": "",
    "web_url": "http://10.126.0.2:3000/root/test-deployment-webhooks",
    "avatar_url": null,
    "git_ssh_url": "ssh://vlad@10.126.0.2:2222/root/test-deployment-webhooks.git",
    "git_http_url": "http://10.126.0.2:3000/root/test-deployment-webhooks.git",
    "namespace": "Administrator",
    "visibility_level": 0,
    "path_with_namespace": "root/test-deployment-webhooks",
    "default_branch": "master",
    "ci_config_path": "",
    "homepage": "http://10.126.0.2:3000/root/test-deployment-webhooks",
    "url": "ssh://vlad@10.126.0.2:2222/root/test-deployment-webhooks.git",
    "ssh_url": "ssh://vlad@10.126.0.2:2222/root/test-deployment-webhooks.git",
    "http_url": "http://10.126.0.2:3000/root/test-deployment-webhooks.git"
  },
  "short_sha": "279484c0",
  "user": {
    "id": 1,
    "name": "Administrator",
    "username": "root",
    "avatar_url": "https://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=80&d=identicon",
    "email": "admin@example.com"
  },
  "user_url": "http://10.126.0.2:3000/root",
  "commit_url": "http://10.126.0.2:3000/root/test-deployment-webhooks/-/commit/279484c09fbe69ededfced8c1bb6e6d24616b468",
  "commit_title": "Add new file"
}

Note that deployable_id is the ID of the CI job.

Group member events

Introduced in GitLab 13.7.

Member events are triggered when:

A user is added as a group member
The access level of a user has changed
The expiration date for user access has been updated
A user has been removed from the group

Add member to group

Request Header:

X-Gitlab-Event: Member Hook

Request Body:

{
  "created_at": "2020-12-11T04:57:22Z",
  "updated_at": "2020-12-11T04:57:22Z",
  "group_name": "webhook-test",
  "group_path": "webhook-test",
  "group_id": 100,
  "user_username": "test_user",
  "user_name": "Test User",
  "user_email": "testuser@webhooktest.com",
  "user_id": 64,
  "group_access": "Guest",
  "group_plan": null,
  "expires_at": "2020-12-14T00:00:00Z",
  "event_name": "user_add_to_group"
}

Update member access level or expiration date

Request Header:

X-Gitlab-Event: Member Hook

Request Body:

{
  "created_at": "2020-12-11T04:57:22Z",
  "updated_at": "2020-12-12T08:48:19Z",
  "group_name": "webhook-test",
  "group_path": "webhook-test",
  "group_id": 100,
  "user_username": "test_user",
  "user_name": "Test User",
  "user_email": "testuser@webhooktest.com",
  "user_id": 64,
  "group_access": "Developer",
  "group_plan": null,
  "expires_at": "2020-12-20T00:00:00Z",
  "event_name": "user_update_for_group"
}

Remove member from group

Request Header:

X-Gitlab-Event: Member Hook

Request Body:

{
  "created_at": "2020-12-11T04:57:22Z",
  "updated_at": "2020-12-12T08:52:34Z",
  "group_name": "webhook-test",
  "group_path": "webhook-test",
  "group_id": 100,
  "user_username": "test_user",
  "user_name": "Test User",
  "user_email": "testuser@webhooktest.com",
  "user_id": 64,
  "group_access": "Guest",
  "group_plan": null,
  "expires_at": "2020-12-14T00:00:00Z",
  "event_name": "user_remove_from_group"
}

Subgroup events

Introduced in GitLab 13.9.

Subgroup events are triggered when:

A subgroup is created in a group
A subgroup is removed from a group

Subgroup created in a group

Request Header:

X-Gitlab-Event: Subgroup Hook

Request Body:

{

  "created_at": "2021-01-20T09:40:12Z",
  "updated_at": "2021-01-20T09:40:12Z",
  "event_name": "subgroup_create",
  "name": "subgroup1",
  "path": "subgroup1",
  "full_path": "group1/subgroup1",
  "group_id": 10,
  "parent_group_id": 7,
  "parent_name": "group1",
  "parent_path": "group1",
  "parent_full_path": "group1"

}

Subgroup removed from a group

Request Header:

X-Gitlab-Event: Subgroup Hook

Request Body:

{

  "created_at": "2021-01-20T09:40:12Z",
  "updated_at": "2021-01-20T09:40:12Z",
  "event_name": "subgroup_destroy",
  "name": "subgroup1",
  "path": "subgroup1",
  "full_path": "group1/subgroup1",
  "group_id": 10,
  "parent_group_id": 7,
  "parent_name": "group1",
  "parent_path": "group1",
  "parent_full_path": "group1"

}

Webhooks for when a subgroup is removed from a group are not triggered when a subgroup is transferred to a new parent group

Feature Flag events

Triggered when a feature flag is turned on or off.

Request Header:

X-Gitlab-Event: Feature Flag Hook

Request Body:

{
  "object_kind": "feature_flag",
  "project": {
    "id": 1,
    "name":"Gitlab Test",
    "description":"Aut reprehenderit ut est.",
    "web_url":"http://example.com/gitlabhq/gitlab-test",
    "avatar_url":null,
    "git_ssh_url":"git@example.com:gitlabhq/gitlab-test.git",
    "git_http_url":"http://example.com/gitlabhq/gitlab-test.git",
    "namespace":"GitlabHQ",
    "visibility_level":20,
    "path_with_namespace":"gitlabhq/gitlab-test",
    "default_branch":"master",
    "ci_config_path": null,
    "homepage":"http://example.com/gitlabhq/gitlab-test",
    "url":"http://example.com/gitlabhq/gitlab-test.git",
    "ssh_url":"git@example.com:gitlabhq/gitlab-test.git",
    "http_url":"http://example.com/gitlabhq/gitlab-test.git"
  },
  "user": {
    "id": 1,
    "name": "Administrator",
    "username": "root",
    "avatar_url": "https://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=80&d=identicon",
    "email": "admin@example.com"
  },
  "user_url": "http://example.com/root",
  "object_attributes": {
    "id": 6,
    "name": "test-feature-flag",
    "description": "test-feature-flag-description",
    "active": true
  }
}

Release events

Triggered when a release is created or updated.

Request Header:

X-Gitlab-Event: Release Hook

Request Body:

{
  "id": 1,
  "created_at": "2020-11-02 12:55:12 UTC",
  "description": "v1.0 has been released",
  "name": "v1.1",
  "released_at": "2020-11-02 12:55:12 UTC",
  "tag": "v1.1",
  "object_kind": "release",
  "project": {
    "id": 2,
    "name": "release-webhook-example",
    "description": "",
    "web_url": "https://example.com/gitlab-org/release-webhook-example",
    "avatar_url": null,
    "git_ssh_url": "ssh://git@example.com/gitlab-org/release-webhook-example.git",
    "git_http_url": "https://example.com/gitlab-org/release-webhook-example.git",
    "namespace": "Gitlab",
    "visibility_level": 0,
    "path_with_namespace": "gitlab-org/release-webhook-example",
    "default_branch": "master",
    "ci_config_path": null,
    "homepage": "https://example.com/gitlab-org/release-webhook-example",
    "url": "ssh://git@example.com/gitlab-org/release-webhook-example.git",
    "ssh_url": "ssh://git@example.com/gitlab-org/release-webhook-example.git",
    "http_url": "https://example.com/gitlab-org/release-webhook-example.git"
  },
  "url": "https://example.com/gitlab-org/release-webhook-example/-/releases/v1.1",
  "action": "create",
  "assets": {
    "count": 5,
    "links": [
      {
        "id": 1,
        "external": true,
        "link_type": "other",
        "name": "Changelog",
        "url": "https://example.net/changelog"
      }
    ],
    "sources": [
      {
        "format": "zip",
        "url": "https://example.com/gitlab-org/release-webhook-example/-/archive/v1.1/release-webhook-example-v1.1.zip"
      },
      {
        "format": "tar.gz",
        "url": "https://example.com/gitlab-org/release-webhook-example/-/archive/v1.1/release-webhook-example-v1.1.tar.gz"
      },
      {
        "format": "tar.bz2",
        "url": "https://example.com/gitlab-org/release-webhook-example/-/archive/v1.1/release-webhook-example-v1.1.tar.bz2"
      },
      {
        "format": "tar",
        "url": "https://example.com/gitlab-org/release-webhook-example/-/archive/v1.1/release-webhook-example-v1.1.tar"
      }
    ]
  },
  "commit": {
    "id": "ee0a3fb31ac16e11b9dbb596ad16d4af654d08f8",
    "message": "Release v1.1",
    "title": "Release v1.1",
    "timestamp": "2020-10-31T14:58:32+11:00",
    "url": "https://example.com/gitlab-org/release-webhook-example/-/commit/ee0a3fb31ac16e11b9dbb596ad16d4af654d08f8",
    "author": {
      "name": "Example User",
      "email": "user@example.com"
    }
  }
}

Image URL rewriting

From GitLab 11.2, simple image references are rewritten to use an absolute URL in webhooks. So if an image, merge request, comment, or wiki page has this in its description:

![image](/uploads/$sha/image.png)

It appears in the webhook body as follows assuming that:

GitLab is installed at gitlab.example.com.
The project is at example-group/example-project.

![image](https://gitlab.example.com/example-group/example-project/uploads/$sha/image.png)

This doesn’t rewrite URLs that already are pointing to HTTP, HTTPS, or protocol-relative URLs. It also doesn’t rewrite image URLs using advanced Markdown features, like link labels.

Testing webhooks

You can trigger the webhook manually. Sample data from the project is used. For example, for triggering Push Events your project should have at least one commit.

Troubleshoot webhooks

GitLab stores each perform of the webhook. You can find records for last 2 days in “Recent Deliveries” section on the edit page of each webhook.

In this section you can see:

HTTP status code (green for 200-299 codes, red for the others, internal error for failed deliveries).
Triggered event.
A time when the event was called.
Elapsed time of the request.

If you need more information about execution, you can click View details link. On this page, you can see data that GitLab sends (request headers and body) and data that it received (response headers and body).

From this page, you can repeat delivery with the same data by clicking Resend Request button.

If URL or secret token of the webhook were updated, data is delivered to the new address.

Webhook fails or multiple webhook requests are triggered

When GitLab sends a webhook, it expects a response in 10 seconds by default. If it does not receive one, it retries the webhook. If the endpoint doesn’t send its HTTP response within those 10 seconds, GitLab may decide the hook failed and retry it.

If your webhooks are failing or you are receiving multiple requests, you can try changing the default value. You can do this by uncommenting or adding the following setting to your /etc/gitlab/gitlab.rb file:

gitlab_rails['webhook_timeout'] = 10

Unable to get local issuer certificate

When SSL verification is enabled, this error indicates that GitLab isn’t able to verify the SSL certificate of the webhook endpoint. Typically, this is because the root certificate isn’t issued by a trusted certification authority as determined by CAcert.org.

Should that not be the case, consider using SSL Checker to identify faults. Missing intermediate certificates are a common point of verification failure.

Example webhook receiver

If you want to see GitLab webhooks in action for testing purposes you can use a simple echo script running in a console session. For the following script to work you need to have Ruby installed.

Save the following file as print_http_body.rb:

require 'webrick'

server = WEBrick::HTTPServer.new(:Port => ARGV.first)
server.mount_proc '/' do |req, res|
  puts req.body
end

trap 'INT' do
  server.shutdown
end
server.start

Pick an unused port (for example, 8000) and start the script: ruby print_http_body.rb 8000. Then add your server as a webhook receiver in GitLab as http://my.host:8000/.

When you press ‘Test’ in GitLab, you should see something like this in the console:

{"before":"077a85dd266e6f3573ef7e9ef8ce3343ad659c4e","after":"95cd4a99e93bc4bbabacfa2cd10e6725b1403c60",<SNIP>}
example.com - - [14/May/2014:07:45:26 EDT] "POST / HTTP/1.1" 200 0
- -> /

You may need to allow requests to the local network for this receiver to be added.