gitlab_merge_merge_request
Merge an approved GitLab merge request with options to squash commits, delete the source branch, or auto-merge after CI pipeline success. Requires approvals met, no conflicts, and CI passing if configured.
Instructions
Merge an approved merge request Returns: Merge result with commit SHA Use when: MR is approved and ready Options: Squash, delete branch, auto-merge
Prerequisites:
No conflicts
Approvals met
CI passing (if required)
Related tools:
gitlab_get_merge_request: Check merge status
gitlab_approve_merge_request: Add approval
gitlab_rebase_merge_request: Fix conflicts
Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| merge_commit_message | No | Custom merge commit message Type: string Optional: Yes Variables supported: - %{title}: MR title - %{description}: MR description - %{reference}: MR reference (!123) Example: 'Merge %{title} (%{reference})' Default: GitLab's default format | |
| merge_when_pipeline_succeeds | No | Auto-merge on pipeline success Type: boolean Default: false Options: - true: Merge automatically when CI passes - false: Manual merge required Requirements: Pipeline must be running Use case: Ensure CI passes before merging | |
| mr_iid | Yes | Merge request number (IID - Internal ID) Type: integer Format: Project-specific MR number (without !) Required: Yes Examples: - 456 (for MR !456) - 7890 (for MR !7890) How to find: Look at MR URL or title - URL: https://gitlab.com/group/project/-/merge_requests/456 → use 456 - Title: "Add new feature (!456)" → use 456 Note: This is NOT the global MR ID | |
| project_id | No | Project identifier (auto-detected if not provided) Type: integer OR string Format: numeric ID or 'namespace/project' Optional: Yes - auto-detects from current git repository Examples: - 12345 (numeric ID) - 'gitlab-org/gitlab' (namespace/project path) - 'my-group/my-subgroup/my-project' (nested groups) Note: If in a git repo with GitLab remote, this can be omitted | |
| should_remove_source_branch | No | Delete source branch after merge Type: boolean Default: false Options: - true: Delete branch after successful merge - false: Keep branch after merge Requirements: User must have permission to delete Use case: Automatic cleanup of feature branches | |
| squash | No | Squash commits on merge Type: boolean Default: Follows project settings Options: - true: Combine all commits into one - false: Keep all commits - null: Use project default Use case: Clean commit history | |
| squash_commit_message | No | Custom squash commit message Type: string Optional: Yes Variables supported: Same as merge_commit_message Example: '%{title} (#%{reference})' Use case: Customize squashed commit message |