Group webhooks API
DETAILS: Tier: Premium, Ultimate Offering: GitLab.com, Self-managed, GitLab Dedicated
Interact with group webhooks by using the REST API. Also called group hooks. These are different from system hooks that are system wide and project webhooks that are limited to one project.
Prerequisites:
- You must be an Administrator or have the Owner role for the group.
List group hooks
Get a list of group hooks
GET /groups/:id/hooks
Supported attributes:
Attribute | Type | Required | Description |
---|---|---|---|
id |
integer/string | yes | The ID or URL-encoded path of the group. |
Example request:
curl --header "PRIVATE-TOKEN: <your_access_token>" "https://gitlab.example.com/api/v4/groups/3/hooks"
Example response:
[
{
"id": 1,
"url": "http://example.com/hook",
"name": "Test group hook",
"description": "This is a test group hook.",
"created_at": "2024-09-01T09:10:54.854Z",
"push_events": true,
"tag_push_events": false,
"merge_requests_events": false,
"repository_update_events": false,
"enable_ssl_verification": true,
"alert_status": "executable",
"disabled_until": null,
"url_variables": [],
"push_events_branch_filter": null,
"branch_filter_strategy": "all_branches",
"custom_webhook_template": "",
"custom_headers": [],
"group_id": 99,
"issues_events": false,
"confidential_issues_events": false,
"note_events": false,
"confidential_note_events": false,
"pipeline_events": false,
"wiki_page_events": false,
"job_events": false,
"deployment_events": false,
"feature_flag_events": false,
"releases_events": false,
"subgroup_events": false,
"emoji_events": false,
"resource_access_token_events": false,
"member_events": false,
"custom_webhook_template": "{\"event\":\"{{object_kind}}\"}",
"custom_headers": [
{
"key": "Authorization"
}
]
}
]
Get a group hook
Get a specific hook for a group.
GET /groups/:id/hooks/:hook_id
Supported attributes:
Attribute | Type | Required | Description |
---|---|---|---|
id |
integer/string | yes | The ID or URL-encoded path of the group. |
hook_id |
integer | yes | The ID of a group hook. |
Example request:
curl --header "PRIVATE-TOKEN: <your_access_token>" "https://gitlab.example.com/api/v4/groups/3/hooks/1"
Example response:
{
"id": 1,
"url": "http://example.com/hook",
"name": "Hook name",
"description": "Hook description",
"group_id": 3,
"push_events": true,
"push_events_branch_filter": "",
"branch_filter_strategy": "wildcard",
"issues_events": true,
"confidential_issues_events": true,
"merge_requests_events": true,
"tag_push_events": true,
"note_events": true,
"confidential_note_events": true,
"job_events": true,
"pipeline_events": true,
"wiki_page_events": true,
"deployment_events": true,
"feature_flag_events": false,
"releases_events": true,
"subgroup_events": true,
"member_events": true,
"enable_ssl_verification": true,
"repository_update_events": false,
"alert_status": "executable",
"disabled_until": null,
"url_variables": [ ],
"created_at": "2012-10-12T17:04:47Z",
"resource_access_token_events": true,
"custom_webhook_template": "{\"event\":\"{{object_kind}}\"}",
"custom_headers": [
{
"key": "Authorization"
}
]
}
Get group hook events
- Introduced in GitLab 17.3.
Get a list of events for a specific group hook in the past seven days from start date.
GET /groups/:id/hooks/:hook_id/events
Supported attributes:
Attribute | Type | Required | Description |
---|---|---|---|
id |
integer/string | yes | The ID or URL-encoded path of the group. |
hook_id |
integer | Yes | The ID of a project hook. |
status |
integer or string | No | The response status code of the events, for example: 200 or 500 . You can search by status category: successful (200-299), client_failure (400-499), and server_failure (500-599). |
page |
integer | No | Page to retrieve. Defaults to 1 . |
per_page |
integer | No | Number of records to return per page. Defaults to 20 . |
Example request:
curl --header "PRIVATE-TOKEN: <your_access_token>" "https://gitlab.example.com/api/v4/groups/3/hooks/1/events"
Example response:
[
{
"id": 1,
"url": "https://example.net/",
"trigger": "push_hooks",
"request_headers": {
"Content-Type": "application/json",
"User-Agent": "GitLab/17.1.0-pre",
"Idempotency-Key": "a5461c4d-9c7f-4af9-add6-cddebe3c426f",
"X-Gitlab-Event": "Push Hook",
"X-Gitlab-Webhook-UUID": "3c5c0404-c866-44bc-a5f6-452bb1bfc76e",
"X-Gitlab-Instance": "https://gitlab.example.com",
"X-Gitlab-Event-UUID": "9cebe914-4827-408f-b014-cfa23a47a35f",
"X-Gitlab-Token": "[REDACTED]"
},
"request_data": {
"object_kind": "push",
"event_name": "push"
}
"after": "f15b32277d2c55c6c595845a87109b09c913c556",
"ref": "refs/heads/master",
"ref_protected": true,
"checkout_sha": "f15b32277d2c55c6c595845a87109b09c913c556",
"message": null,
"user_id": 1,
"user_name": "Administrator",
"user_username": "root",
"user_email": null,
"user_avatar": "https://www.gravatar.com/avatar/13efe0d4559475ba84ecc802061febbdea6e224fcbffd7ec7da9cd431845299c?s=80&d=identicon",
"project_id": 7,
"project": {
"id": 7,
"name": "Flight",
"description": "Incidunt ea ab officia a veniam.",
"web_url": "https://gitlab.example.com/flightjs/Flight",
"avatar_url": null,
"git_ssh_url": "ssh://git@gitlab.example.com:2222/flightjs/Flight.git",
"git_http_url": "https://gitlab.example.com/flightjs/Flight.git",
"namespace": "Flightjs",
"visibility_level": 10,
"path_with_namespace": "flightjs/Flight",
"default_branch": "master",
"ci_config_path": null,
"homepage": "https://gitlab.example.com/flightjs/Flight",
"url": "ssh://git@gitlab.example.com:2222/flightjs/Flight.git",
"ssh_url": "ssh://git@gitlab.example.com:2222/flightjs/Flight.git",
"http_url": "https://gitlab.example.com/flightjs/Flight.git"
},
"commits": [
{
"id": "f15b32277d2c55c6c595845a87109b09c913c556",
"message": "v1.5.2\n",
"title": "v1.5.2",
"timestamp": "2017-06-19T14:39:53-07:00",
"url": "https://gitlab.example.com/flightjs/Flight/-/commit/f15b32277d2c55c6c595845a87109b09c913c556",
"author": {
"name": "Andrew Lunny",
"email": "[REDACTED]"
},
"added": [],
"modified": [
"package.json"
],
"removed": []
},
{
"id": "8749d49930866a4871fa086adbd7d2057fcc3ebb",
"message": "Merge pull request #378 from flightjs/alunny/publish_lib\n\npublish lib and index to npm",
"title": "Merge pull request #378 from flightjs/alunny/publish_lib",
"timestamp": "2017-06-16T10:26:39-07:00",
"url": "https://gitlab.example.com/flightjs/Flight/-/commit/8749d49930866a4871fa086adbd7d2057fcc3ebb",
"author": {
"name": "angus croll",
"email": "[REDACTED]"
},
"added": [],
"modified": [
"package.json"
],
"removed": []
},
{
"id": "468abc807a2b2572f43e72c743b76cee6db24025",
"message": "publish lib and index to npm\n",
"title": "publish lib and index to npm",
"timestamp": "2017-06-16T10:23:04-07:00",
"url": "https://gitlab.example.com/flightjs/Flight/-/commit/468abc807a2b2572f43e72c743b76cee6db24025",
"author": {
"name": "Andrew Lunny",
"email": "[REDACTED]"
},
"added": [],
"modified": [
"package.json"
],
"removed": []
}
],
"total_commits_count": 3,
"push_options": {},
"repository": {
"name": "Flight",
"url": "ssh://git@gitlab.example.com:2222/flightjs/Flight.git",
"description": "Incidunt ea ab officia a veniam.",
"homepage": "https://gitlab.example.com/flightjs/Flight",
"git_http_url": "https://gitlab.example.com/flightjs/Flight.git",
"git_ssh_url": "ssh://git@gitlab.example.com:2222/flightjs/Flight.git",
"visibility_level": 10
}
},
"response_headers": {
"Date": "Sun, 26 May 2024 03:03:17 GMT",
"Content-Type": "application/json; charset=utf-8",
"Content-Length": "16",
"Connection": "close",
"X-Powered-By": "Express",
"Access-Control-Allow-Origin": "*",
"X-Pd-Status": "sent to primary"
},
"response_body": "{\"success\":true}",
"execution_duration": 1.0906479999999874,
"response_status": "200"
},
{
"id": 2,
"url": "https://example.net/",
"trigger": "push_hooks",
"request_headers": {
"Content-Type": "application/json",
"User-Agent": "GitLab/17.1.0-pre",
"Idempotency-Key": "1f0a54f0-0529-408d-a5b8-a2a98ff5f94a",
"X-Gitlab-Event": "Push Hook",
"X-Gitlab-Webhook-UUID": "a753eedb-1d72-4549-9ca7-eac8ea8e50dd",
"X-Gitlab-Instance": "https://gitlab.example.com:3000",
"X-Gitlab-Event-UUID": "842d7c3e-3114-4396-8a95-66c084d53cb1",
"X-Gitlab-Token": "[REDACTED]"
},
"request_data": {
"object_kind": "push",
"event_name": "push",
"before": "468abc807a2b2572f43e72c743b76cee6db24025",
"after": "f15b32277d2c55c6c595845a87109b09c913c556",
"ref": "refs/heads/master",
"ref_protected": true,
"checkout_sha": "f15b32277d2c55c6c595845a87109b09c913c556",
"message": null,
"user_id": 1,
"user_name": "Administrator",
"user_username": "root",
"user_email": null,
"user_avatar": "https://www.gravatar.com/avatar/13efe0d4559475ba84ecc802061febbdea6e224fcbffd7ec7da9cd431845299c?s=80&d=identicon",
"project_id": 7,
"project": {
"id": 7,
"name": "Flight",
"description": "Incidunt ea ab officia a veniam.",
"web_url": "https://gitlab.example.com/flightjs/Flight",
"avatar_url": null,
"git_ssh_url": "ssh://git@gitlab.example.com:2222/flightjs/Flight.git",
"git_http_url": "https://gitlab.example.com/flightjs/Flight.git",
"namespace": "Flightjs",
"visibility_level": 10,
"path_with_namespace": "flightjs/Flight",
"default_branch": "master",
"ci_config_path": null,
"homepage": "https://gitlab.example.com/flightjs/Flight",
"url": "ssh://git@gitlab.example.com:2222/flightjs/Flight.git",
"ssh_url": "ssh://git@gitlab.example.com:2222/flightjs/Flight.git",
"http_url": "https://gitlab.example.com/flightjs/Flight.git"
},
"commits": [
{
"id": "f15b32277d2c55c6c595845a87109b09c913c556",
"message": "v1.5.2\n",
"title": "v1.5.2",
"timestamp": "2017-06-19T14:39:53-07:00",
"url": "https://gitlab.example.com/flightjs/Flight/-/commit/f15b32277d2c55c6c595845a87109b09c913c556",
"author": {
"name": "Andrew Lunny",
"email": "[REDACTED]"
},
"added": [],
"modified": [
"package.json"
],
"removed": []
},
{
"id": "8749d49930866a4871fa086adbd7d2057fcc3ebb",
"message": "Merge pull request #378 from flightjs/alunny/publish_lib\n\npublish lib and index to npm",
"title": "Merge pull request #378 from flightjs/alunny/publish_lib",
"timestamp": "2017-06-16T10:26:39-07:00",
"url": "https://gitlab.example.com/flightjs/Flight/-/commit/8749d49930866a4871fa086adbd7d2057fcc3ebb",
"author": {
"name": "angus croll",
"email": "[REDACTED]"
},
"added": [],
"modified": [
"package.json"
],
"removed": []
},
{
"id": "468abc807a2b2572f43e72c743b76cee6db24025",
"message": "publish lib and index to npm\n",
"title": "publish lib and index to npm",
"timestamp": "2017-06-16T10:23:04-07:00",
"url": "https://gitlab.example.com/flightjs/Flight/-/commit/468abc807a2b2572f43e72c743b76cee6db24025",
"author": {
"name": "Andrew Lunny",
"email": "[REDACTED]"
},
"added": [],
"modified": [
"package.json"
],
"removed": []
}
],
"total_commits_count": 3,
"push_options": {},
"repository": {
"name": "Flight",
"url": "ssh://git@gitlab.example.com:2222/flightjs/Flight.git",
"description": "Incidunt ea ab officia a veniam.",
"homepage": "https://gitlab.example.com/flightjs/Flight",
"git_http_url": "https://gitlab.example.com/flightjs/Flight.git",
"git_ssh_url": "ssh://git@gitlab.example.com:2222/flightjs/Flight.git",
"visibility_level": 10
}
},
"response_headers": {
"Date": "Sun, 26 May 2024 03:03:19 GMT",
"Content-Type": "application/json; charset=utf-8",
"Content-Length": "16",
"Connection": "close",
"X-Powered-By": "Express",
"Access-Control-Allow-Origin": "*",
"X-Pd-Status": "sent to primary"
},
"response_body": "{\"success\":true}",
"execution_duration": 1.0716120000000728,
"response_status": "200"
}
]
Resend group hook event
- Introduced in GitLab 17.4.
Resends a specific hook event.
This endpoint has a rate limit of five requests per minute for each hook and authenticated user.
To disable this limit on self-managed GitLab and GitLab Dedicated, an administrator can
disable the feature flag named web_hook_event_resend_api_endpoint_rate_limit
.
POST /groups/:id/hooks/:hook_id/events/:hook_event_id/resend
Supported attributes:
Attribute | Type | Required | Description |
---|---|---|---|
id |
integer/string | yes | The ID or URL-encoded path of the group. |
hook_id |
integer | Yes | The ID of a group hook. |
hook_event_id |
integer | Yes | The ID of a hook event. |
Example request:
curl --request POST --header "PRIVATE-TOKEN: <your_access_token>" "https://gitlab.example.com/api/v4/groups/3/hooks/1/events/1/resend"
Example response:
{
"response_status": 200
}
Add a group hook
Adds a hook to a specified group.
POST /groups/:id/hooks
Supported attributes:
Attribute | Type | Required | Description |
---|---|---|---|
id |
integer/string | yes | The ID or URL-encoded path of the group. |
url |
string | yes | The hook URL. |
name |
string | no | Name of the hook (introduced in GitLab 17.1). |
description |
string | no | Description of the hook (introduced in GitLab 17.1). |
push_events |
boolean | no | Trigger hook on push events. |
push_events_branch_filter |
string | no | Trigger hook on push events for matching branches only. |
branch_filter_strategy |
string | no | Filter push events by branch. Possible values are wildcard (default), regex , and all_branches . |
issues_events |
boolean | no | Trigger hook on issues events. |
confidential_issues_events |
boolean | no | Trigger hook on confidential issues events. |
merge_requests_events |
boolean | no | Trigger hook on merge requests events. |
tag_push_events |
boolean | no | Trigger hook on tag push events. |
note_events |
boolean | no | Trigger hook on note events. |
confidential_note_events |
boolean | no | Trigger hook on confidential note events. |
job_events |
boolean | no | Trigger hook on job events. |
pipeline_events |
boolean | no | Trigger hook on pipeline events. |
wiki_page_events |
boolean | no | Trigger hook on wiki page events. |
deployment_events |
boolean | no | Trigger hook on deployment events. |
feature_flag_events |
boolean | no | Trigger hook on feature flag events. |
releases_events |
boolean | no | Trigger hook on release events. |
subgroup_events |
boolean | no | Trigger hook on subgroup events. |
member_events |
boolean | no | Trigger hook on member events. |
enable_ssl_verification |
boolean | no | Do SSL verification when triggering the hook. |
token |
string | no | Secret token to validate received payloads; not returned in the response. |
resource_access_token_events |
boolean | no | Trigger hook on project access token expiry events. |
custom_webhook_template |
string | no | Custom webhook template for the hook. |
custom_headers |
array | No | Custom headers for the hook. |
Example request:
curl --request POST \
--header "content-type: application/json" \
--header "PRIVATE-TOKEN: <your_access_token>" \
--url "https://gitlab.example.com/api/v4/groups/3/hooks" \
--data '{"url": "https://example.com/hook", "name": "My Hook", "description": "Hook description"}'
Example response:
{
"id": 42,
"url": "https://example.com/hook",
"name": "My Hook",
"description": "Hook description",
"group_id": 3,
"push_events": true,
"push_events_branch_filter": "",
"branch_filter_strategy": "wildcard",
"issues_events": true,
"confidential_issues_events": true,
"merge_requests_events": true,
"tag_push_events": true,
"note_events": true,
"confidential_note_events": true,
"job_events": true,
"pipeline_events": true,
"wiki_page_events": true,
"deployment_events": true,
"feature_flag_events": true,
"releases_events": true,
"subgroup_events": true,
"member_events": true,
"enable_ssl_verification": true,
"repository_update_events": false,
"alert_status": "executable",
"disabled_until": null,
"url_variables": [ ],
"created_at": "2012-10-12T17:04:47Z",
"resource_access_token_events": true,
"custom_webhook_template": "{\"event\":\"{{object_kind}}\"}",
}
Edit group hook
Edits a hook for a specified group.
PUT /groups/:id/hooks/:hook_id
Supported attributes:
Attribute | Type | Required | Description |
---|---|---|---|
id |
integer or string | yes | The ID or URL-encoded path of the group. |
hook_id |
integer | yes | The ID of the group hook. |
url |
string | yes | The hook URL. |
name |
string | no | Name of the hook (introduced in GitLab 17.1). |
description |
string | no | Description of the hook (introduced in GitLab 17.1). |
push_events |
boolean | no | Trigger hook on push events. |
push_events_branch_filter |
string | no | Trigger hook on push events for matching branches only. |
branch_filter_strategy |
string | no | Filter push events by branch. Possible values are wildcard (default), regex , and all_branches . |
issues_events |
boolean | no | Trigger hook on issues events. |
confidential_issues_events |
boolean | no | Trigger hook on confidential issues events. |
merge_requests_events |
boolean | no | Trigger hook on merge requests events. |
tag_push_events |
boolean | no | Trigger hook on tag push events. |
note_events |
boolean | no | Trigger hook on note events. |
confidential_note_events |
boolean | no | Trigger hook on confidential note events. |
job_events |
boolean | no | Trigger hook on job events. |
pipeline_events |
boolean | no | Trigger hook on pipeline events. |
wiki_page_events |
boolean | no | Trigger hook on wiki page events. |
deployment_events |
boolean | no | Trigger hook on deployment events. |
feature_flag_events |
boolean | no | Trigger hook on feature flag events. |
releases_events |
boolean | no | Trigger hook on release events. |
subgroup_events |
boolean | no | Trigger hook on subgroup events. |
member_events |
boolean | no | Trigger hook on member events. |
enable_ssl_verification |
boolean | no | Do SSL verification when triggering the hook. |
service_access_tokens_expiration_enforced |
boolean | no | Require service account access tokens to have an expiration date. |
token |
string | no | Secret token to validate received payloads. Not returned in the response. When you change the webhook URL, the secret token is reset and not retained. |
resource_access_token_events |
boolean | no | Trigger hook on project access token expiry events. |
custom_webhook_template |
string | no | Custom webhook template for the hook. |
custom_headers |
array | no | Custom headers for the hook. |
Example request:
curl --request POST \
--header "content-type: application/json" \
--header "PRIVATE-TOKEN: <your_access_token>" \
--url "https://gitlab.example.com/api/v4/groups/3/hooks/1" \
--data '{"url": "https://example.com/hook", "name": "New hook name", "description": "Changed hook description"}'
Example response:
{
"id": 1,
"url": "https://example.com/hook",
"name": "New hook name",
"description": "Changed hook description",
"group_id": 3,
"push_events": true,
"push_events_branch_filter": "",
"branch_filter_strategy": "wildcard",
"issues_events": true,
"confidential_issues_events": true,
"merge_requests_events": true,
"tag_push_events": true,
"note_events": true,
"confidential_note_events": true,
"job_events": true,
"pipeline_events": true,
"wiki_page_events": true,
"deployment_events": true,
"feature_flag_events": true,
"releases_events": true,
"subgroup_events": true,
"member_events": true,
"enable_ssl_verification": true,
"repository_update_events": false,
"alert_status": "executable",
"disabled_until": null,
"url_variables": [ ],
"created_at": "2012-10-12T17:04:47Z",
"resource_access_token_events": true,
"custom_webhook_template": "{\"event\":\"{{object_kind}}\"}",
"custom_headers": [
{
"key": "Authorization"
}
]
}
Delete a group hook
Deletes a hook from a group. This is an idempotent method and can be called multiple times. Either the hook is available or not.
DELETE /groups/:id/hooks/:hook_id
Supported attributes:
Attribute | Type | Required | Description |
---|---|---|---|
id |
integer/string | yes | The ID or URL-encoded path of the group. |
hook_id |
integer | yes | The ID of the group hook. |
Example request:
curl --request DELETE --header "PRIVATE-TOKEN: <your_access_token>" "https://gitlab.example.com/api/v4/groups/3/hooks/1"
On success, no message is returned.
Trigger a test group hook
- Introduced in GitLab 17.1.
- Special rate limit introduced in GitLab 17.1 with a flag named
web_hook_test_api_endpoint_rate_limit
. Enabled by default.
Trigger a test hook for a specified group.
This endpoint has a rate limit of five requests per minute for each group and authenticated user.
To disable this limit on self-managed GitLab and GitLab Dedicated, an administrator can
disable the feature flag named web_hook_test_api_endpoint_rate_limit
.
POST /groups/:id/hooks/:hook_id/test/:trigger
Attribute | Type | Required | Description |
---|---|---|---|
hook_id |
integer | Yes | The ID of the group hook. |
id |
integer or string | Yes | The ID or URL-encoded path of the group. |
trigger |
string | Yes | One of push_events , tag_push_events , issues_events , confidential_issues_events , note_events , merge_requests_events , job_events , pipeline_events , wiki_page_events , releases_events , emoji_events , or resource_access_token_events . |
Example request:
curl --request POST --header "PRIVATE-TOKEN: <your_access_token>" "https://gitlab.example.com/api/v4/groups/3/hooks/1/test/push_events"
Example response:
{"message":"201 Created"}
Set a custom header
- Introduced in GitLab 17.1.
Sets a custom header.
PUT /groups/:id/hooks/:hook_id/custom_headers/:key
Supported attributes:
Attribute | Type | Required | Description |
---|---|---|---|
id |
integer or string | Yes | The ID or URL-encoded path of the group. |
hook_id |
integer | Yes | The ID of the group hook. |
key |
string | Yes | The key of the custom header. |
value |
string | Yes | The value of the custom header. |
Example request:
curl --request PUT --header "PRIVATE-TOKEN: <your_access_token>" "https://gitlab.example.com/api/v4/groups/3/hooks/1/custom_headers/header_key?value='header_value'"
On success, no message is returned.
Delete a custom header
- Introduced in GitLab 17.1.
Deletes a custom header.
DELETE /groups/:id/hooks/:hook_id/custom_headers/:key
Supported attributes:
Attribute | Type | Required | Description |
---|---|---|---|
id |
integer or string | Yes | The ID or URL-encoded path of the group. |
hook_id |
integer | Yes | The ID of the group hook. |
key |
string | Yes | The key of the custom header. |
Example request:
curl --request DELETE --header "PRIVATE-TOKEN: <your_access_token>" "https://gitlab.example.com/api/v4/groups/3/hooks/1/custom_headers/header_key"
On success, no message is returned.
Set a URL variable
- Introduced in GitLab 15.2.
PUT /groups/:id/hooks/:hook_id/url_variables/:key
Supported attributes:
Attribute | Type | Required | Description |
---|---|---|---|
id |
integer or string | Yes | The ID or URL-encoded path of the group. |
hook_id |
integer | Yes | The ID of the group hook. |
key |
string | Yes | The key of the URL variable. |
value |
string | Yes | The value of the URL variable. |
Example request:
curl --request PUT --header "PRIVATE-TOKEN: <your_access_token>" "https://gitlab.example.com/api/v4/groups/3/hooks/1/url_variables/my_key?value='my_key_value'"
On success, no message is returned.
Delete a URL variable
- Introduced in GitLab 15.2.
DELETE /groups/:id/hooks/:hook_id/url_variables/:key
Supported attributes:
Attribute | Type | Required | Description |
---|---|---|---|
id |
integer or string | Yes | The ID or URL-encoded path of the group. |
hook_id |
integer | Yes | The ID of the group hook. |
key |
string | Yes | The key of the URL variable. |
Example request:
curl --request DELETE --header "PRIVATE-TOKEN: <your_access_token>" "https://gitlab.example.com/api/v4/groups/3/hooks/1/url_variables/my_key"
On success, no message is returned.