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GitLab API changes
Deprecation

Endpoint deprecated: POST /api/v4/projects/{}/merge_requests/{}/cancel_merge_when_pipeline_succeeds

openapi:POST /api/v4/projects/{}/merge_requests/{}/cancel_merge_when_pipeline_succeeds::operation.endpoint-deprecated
Product
GitLab REST API
Source
OpenAPI URL
Change kind
Endpoint Deprecated
Detected
Last updated

Deterministic evidence

Before / after

Extracted from GitLab's published contract. Shows the whole operation — a narrower excerpt was not available for this change. Open the source ↗

−11+43 changes

1 / 3
{
{
"deprecated": true,
"description": "Cancels an automatic merge for a merge request that has been set to merge when the pipeline succeeds. This endpoint does not return the merge request. Deprecated in GitLab 19.5. Use POST /projects/:id/merge_requests/:merge_request_iid/cancel_auto_merge instead.",
"operationId": "postApiV4ProjectsIdMergeRequestsMergeRequestIidCancelMergeWhenPipelineSucceeds",
"operationId": "postApiV4ProjectsIdMergeRequestsMergeRequestIidCancelMergeWhenPipelineSucceeds",
"parameters": [
"parameters": [
{
{
}
}
],
],
"responses": {
"responses": {
"201": {
"201": {},
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/APIEntitiesMergeRequest"
}
}
}
},
"400": {},
"400": {},
"401": {},
"401": {},
"404": {},
"404": {},
"405": {},
"405": {}
"406": {}
},
},
"tags": [
"tags": [
"Merge requests"
"Merge requests"

Deadline

Deprecation timeline

openapi:POST /api/v4/projects/{}/merge_requests/{}/cancel_merge_when_pipeline_succeeds::operation.endpoint-deprecated was announced as deprecated on Oct 2, 2026, with no removal date yet.

See all GitLab deprecation deadlines →

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