# create_merge_request_note Add a new note to a merge request Agent View of the PolicyLayer registry record for `create_merge_request_note`. HTML page: https://policylayer.com/tools/io-github-zereight-gitlab-mcp/create-merge-request-note ## Facts - Tool: `create_merge_request_note` - Server: Gitlab Mcp (`@zereight/mcp-gitlab`) — https://policylayer.com/tools/io-github-zereight-gitlab-mcp.md - Install: `npx -y @zereight/mcp-gitlab` - Homepage: https://github.com/zereight/gitlab-mcp - Risk category: Write (Medium risk) - Registry record: grade F, identity unverified - Server rate-limited: no - Parameters: 0 - Recommended policy verdict: Rate-limited ## Example call (MCP tools/call, JSON-RPC 2.0) ```json { "jsonrpc": "2.0", "id": 1, "method": "tools/call", "params": { "name": "create_merge_request_note", "arguments": {} } } ``` ## Why create_merge_request_note is rated Medium Creating a note on a merge request is a write operation that adds data to a GitLab project. While reversible (unlike destructive operations), it modifies project state and could be misused to add misleading comments, spam, or sensitive information to merge requests. The severity is medium because the blast radius is limited to comment creation without direct impact on code, data deletion, or financial operations. From the tool's own definition: "Tool description explicitly states 'Add a new note to a merge request', which creates new content in the GitLab system. This is a reversible create operation (notes can be edited or deleted)." ## Use case AI agents use create_merge_request_note to create or update resources in Gitlab Mcp, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Gitlab Mcp environment. ## Recommended policy (PolicyLayer) Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Gitlab Mcp: ```json { "version": "1", "default": "deny", "tools": { "create_merge_request_note": { "limits": [ { "counter": "create_merge_request_note_rate", "window": "minute", "max": 30, "scope": "grant" } ] } } } ``` ## Other tools on Gitlab Mcp (214) - `cancel_pipeline_job` — Destructive — https://policylayer.com/tools/io-github-zereight-gitlab-mcp/cancel-pipeline-job.md - `delete_branch` — Destructive — https://policylayer.com/tools/io-github-zereight-gitlab-mcp/delete-branch.md - `delete_draft_note` — Destructive — https://policylayer.com/tools/io-github-zereight-gitlab-mcp/delete-draft-note.md - `delete_group_variable` — Destructive — https://policylayer.com/tools/io-github-zereight-gitlab-mcp/delete-group-variable.md - `delete_group_wiki_page` — Destructive — https://policylayer.com/tools/io-github-zereight-gitlab-mcp/delete-group-wiki-page.md - `delete_issue` — Destructive — https://policylayer.com/tools/io-github-zereight-gitlab-mcp/delete-issue.md - `delete_issue_emoji_reaction` — Destructive — https://policylayer.com/tools/io-github-zereight-gitlab-mcp/delete-issue-emoji-reaction.md - `delete_issue_link` — Destructive — https://policylayer.com/tools/io-github-zereight-gitlab-mcp/delete-issue-link.md - `delete_issue_note_emoji_reaction` — Destructive — https://policylayer.com/tools/io-github-zereight-gitlab-mcp/delete-issue-note-emoji-reaction.md - `delete_label` — Destructive — https://policylayer.com/tools/io-github-zereight-gitlab-mcp/delete-label.md - `delete_merge_request_discussion_note` — Destructive — https://policylayer.com/tools/io-github-zereight-gitlab-mcp/delete-merge-request-discussion-note.md - `delete_merge_request_emoji_reaction` — Destructive — https://policylayer.com/tools/io-github-zereight-gitlab-mcp/delete-merge-request-emoji-reaction.md - `delete_merge_request_note` — Destructive — https://policylayer.com/tools/io-github-zereight-gitlab-mcp/delete-merge-request-note.md - `delete_merge_request_note_emoji_reaction` — Destructive — https://policylayer.com/tools/io-github-zereight-gitlab-mcp/delete-merge-request-note-emoji-reaction.md - `delete_milestone` — Destructive — https://policylayer.com/tools/io-github-zereight-gitlab-mcp/delete-milestone.md - `delete_project_variable` — Destructive — https://policylayer.com/tools/io-github-zereight-gitlab-mcp/delete-project-variable.md - `delete_release` — Destructive — https://policylayer.com/tools/io-github-zereight-gitlab-mcp/delete-release.md - `delete_tag` — Destructive — https://policylayer.com/tools/io-github-zereight-gitlab-mcp/delete-tag.md - `delete_wiki_page` — Destructive — https://policylayer.com/tools/io-github-zereight-gitlab-mcp/delete-wiki-page.md - `delete_work_item_emoji_reaction` — Destructive — https://policylayer.com/tools/io-github-zereight-gitlab-mcp/delete-work-item-emoji-reaction.md - `delete_work_item_note_emoji_reaction` — Destructive — https://policylayer.com/tools/io-github-zereight-gitlab-mcp/delete-work-item-note-emoji-reaction.md - `omg_clear_state` — Destructive — https://policylayer.com/tools/io-github-zereight-gitlab-mcp/omg-clear-state.md - `omg_delete_memory` — Destructive — https://policylayer.com/tools/io-github-zereight-gitlab-mcp/omg-delete-memory.md - `purge_dependency_proxy_cache` — Destructive — https://policylayer.com/tools/io-github-zereight-gitlab-mcp/purge-dependency-proxy-cache.md - `unprotect_branch` — Destructive — https://policylayer.com/tools/io-github-zereight-gitlab-mcp/unprotect-branch.md - `cancel_pipeline` — Execute — https://policylayer.com/tools/io-github-zereight-gitlab-mcp/cancel-pipeline.md - `create_pipeline` — Execute — https://policylayer.com/tools/io-github-zereight-gitlab-mcp/create-pipeline.md - `execute_graphql` — Execute — https://policylayer.com/tools/io-github-zereight-gitlab-mcp/execute-graphql.md - `omg_next_phase` — Execute — https://policylayer.com/tools/io-github-zereight-gitlab-mcp/omg-next-phase.md - `play_pipeline_job` — Execute — https://policylayer.com/tools/io-github-zereight-gitlab-mcp/play-pipeline-job.md - …and 184 more: https://policylayer.com/tools/io-github-zereight-gitlab-mcp.md ## For agents This record is a snapshot. Live verdicts and the full registry: - Check every server in your MCP config at once: `npx -y policylayer stack` - Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md) - Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events` --- Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=io-github-zereight-gitlab-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-zereight-gitlab-mcp