Publish one merge-request draft note.
AI agents use gitlab_publish_draft_note to create or update resources in Gitlab — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Gitlab environment.
Publishing a draft note converts a private/unpublished comment into a visible public comment on a merge request, thereby creating visible data (or promoting existing data from hidden to visible state). This is a reversible write operation—the note can be edited or deleted afterward.
From the tool's definition Tool name includes 'publish' and description states it 'Publish one merge-request draft note', indicating it creates or modifies comment visibility on merge requests.
Documented attack patterns abuse exactly the kind of access gitlab_publish_draft_note gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Gitlab, and nothing reaches the server without passing your rules. This is the rule we recommend for gitlab_publish_draft_note:
{
"version": "1",
"default": "deny",
"tools": {
"gitlab_publish_draft_note": {
"limits": [
{
"counter": "gitlab_publish_draft_note_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}gitlab_publish_draft_note stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
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Publish one merge-request draft note. It is categorised as a Write tool in the Gitlab MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Gitlab MCP server in PolicyLayer and add a rule for gitlab_publish_draft_note: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Gitlab. Nothing to install.
gitlab_publish_draft_note is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the gitlab_publish_draft_note rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for gitlab_publish_draft_note. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
gitlab_publish_draft_note is provided by the Gitlab MCP server (mcpland/gitlab-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Gitlab, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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190 Gitlab tools catalogued and risk-classified — across an index of 43,000+ MCP servers.