# Web hooks
Project web hooks allow you to trigger an URL if new code is pushed or a new issue is created.
You can configure web hooks to listen for specific events like pushes, issues or merge requests. GitLab will send a POST request with data to the web hook URL.
Web hooks can be used to update an external issue tracker, trigger CI builds, update a backup mirror, or even deploy to your production server.
If you have a big set of projects in the one group then it will be convenient for you to configure web hooks globally for the whole group. You can add the group level web hooks on the group settings page.
If you send a web hook to an SSL endpoint [the certificate will not be verified](https://gitlab.com/gitlab-org/gitlab-ce/blob/ccd617e58ea71c42b6b073e692447d0fe3c00be6/app/models/web_hook.rb#L35) since many people use self-signed certificates.
## Push events
Triggered when you push to the repository except when pushing tags.
**Request header**:
```
X-Gitlab-Event: Push Hook
```
**Request body:**
```json
{
"object_kind": "push",
"before": "95790bf891e76fee5e1747ab589903a6a1f80f22",
"after": "da1560886d4f094c3e6c9ef40349f7d38b5d27d7",
"ref": "refs/heads/master",
"user_id": 4,
"user_name": "John Smith",
"user_email": "john@example.com",
"project_id": 15,
"repository": {
"name": "Diaspora",
"url": "git@example.com:mike/diasporadiaspora.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.",
"timestamp": "2011-12-12T14:27:31+02:00",
"url": "http://example.com/mike/diaspora/commit/b6568db1bc1dcd7f8b4d5a946b0b91f9dacd7327",
"author": {
"name": "Jordi Mallach",
"email": "jordi@softcatala.org"
}
},
{
"id": "da1560886d4f094c3e6c9ef40349f7d38b5d27d7",
"message": "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)"
}
}
],
"total_commits_count": 4
}
```
## Tag events
Triggered when you create (or delete) tags to the repository.
**Request header**:
```
X-Gitlab-Event: Tag Push Hook
```
**Request body:**
```json
{
"object_kind": "tag_push",
"ref": "refs/tags/v1.0.0",
"before": "0000000000000000000000000000000000000000",
"after": "82b3d5ae55f7080f1e6022629cdb57bfae7cccc7",
"user_id": 1,
"user_name": "John Smith",
"project_id": 1,
"repository": {
"name": "jsmith",
"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
}
```
## Issues 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:**
```json
{
"object_kind": "issue",
"user": {
"name": "Administrator",
"username": "root",
"avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=40\u0026d=identicon"
},
"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": 301,
"title": "New API: create/update/delete file",
"assignee_id": 51,
"author_id": 51,
"project_id": 14,
"created_at": "2013-12-03T17:15:43Z",
"updated_at": "2013-12-03T17:15:43Z",
"position": 0,
"branch_name": null,
"description": "Create new API for manipulations with repository",
"milestone_id": null,
"state": "opened",
"iid": 23,
"url": "http://example.com/diaspora/issues/23",
"action": "open"
}
}
```
## Comment events
Triggered when a new comment is made on commits, merge requests, issues, and code snippets.
The note data will be stored in `object_attributes` (e.g. `note`, `noteable_type`). The
payload will also include information about the target of the comment. For example,
a comment on a issue will include the specific issue information under the `issue` key.
Valid target types:
1. `commit`
2. `merge_request`
3. `issue`
4. `snippet`
### Comment on commit
**Request header**:
```
X-Gitlab-Event: Note Hook
```
**Request body:**
```json
{
"object_kind": "note",
"user": {
"name": "Adminstrator",
"username": "root",
"avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=40\u0026d=identicon"
},
"project_id": 5,
"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": 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: Dmitriy Zaporozhets \u003cdmitriy.zaporozhets@gmail.com\u003e\n",
"timestamp": "2014-02-27T10:06:20+02:00",
"url": "http://example.com/gitlab-org/gitlab-test/commit/cfe32cf61b73a0d5e9f13e774abde7ff789b1660",
"author": {
"name": "Dmitriy Zaporozhets",
"email": "dmitriy.zaporozhets@gmail.com"
}
}
}
```
### Comment on merge request
**Request header**:
```
X-Gitlab-Event: Note Hook
```
**Request body:**
```json
{
"object_kind": "note",
"user": {
"name": "Administrator",
"username": "root",
"avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=40\u0026d=identicon"
},
"project_id": 5,
"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": 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,
"locked_at": null,
"source": {
"name": "Gitlab Test",
"ssh_url": "git@example.com:gitlab-org/gitlab-test.git",
"http_url": "http://example.com/gitlab-org/gitlab-test.git",
"web_url": "http://example.com/gitlab-org/gitlab-test",
"namespace": "Gitlab Org",
"visibility_level": 10
},
"target": {
"name": "Gitlab Test",
"ssh_url": "git@example.com:gitlab-org/gitlab-test.git",
"http_url": "http://example.com/gitlab-org/gitlab-test.git",
"web_url": "http://example.com/gitlab-org/gitlab-test",
"namespace": "Gitlab Org",
"visibility_level": 10
},
"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"
}
}
}
}
```
### Comment on issue
**Request header**:
```
X-Gitlab-Event: Note Hook
```
**Request body:**
```json
{
"object_kind": "note",
"user": {
"name": "Adminstrator",
"username": "root",
"avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=40\u0026d=identicon"
},
"project_id": 5,
"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": 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_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
}
}
```
### Comment on code snippet
**Request header**:
```
X-Gitlab-Event: Note Hook
```
**Request body:**
```
{
"object_kind": "note",
"user": {
"name": "Administrator",
"username": "root",
"avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=40\u0026d=identicon"
},
"project_id": 5,
"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:**
```json
{
"object_kind": "merge_request",
"user": {
"name": "Administrator",
"username": "root",
"avatar_url": "http://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=40\u0026d=identicon"
},
"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",
"st_commits": null,
"st_diffs": null,
"milestone_id": null,
"state": "opened",
"merge_status": "unchecked",
"target_project_id": 14,
"iid": 1,
"description": "",
"source": {
"name": "awesome_project",
"ssh_url": "ssh://git@example.com/awesome_space/awesome_project.git",
"http_url": "http://example.com/awesome_space/awesome_project.git",
"web_url": "http://example.com/awesome_space/awesome_project",
"visibility_level": 20,
"namespace": "awesome_space"
},
"target": {
"name": "awesome_project",
"ssh_url": "ssh://git@example.com/awesome_space/awesome_project.git",
"http_url": "http://example.com/awesome_space/awesome_project.git",
"web_url": "http://example.com/awesome_space/awesome_project",
"visibility_level": 20,
"namespace": "awesome_space"
},
"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)"
}
},
"url": "http://example.com/diaspora/merge_requests/1",
"action": "open"
}
}
```
#### Example webhook receiver
If you want to see GitLab's webhooks in action for testing purposes you can use
a simple echo script running in a console session.
Save the following file as `print_http_body.rb`.
```ruby
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 (e.g. 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 Hook' 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
- -> /
```