star_project · GitLab MCP Server MCP: Risk & Policy

WHAT IT DOES

What star_project does on GitLab MCP Server

AI agents use star_project to create or update resources in GitLab MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your GitLab MCP Server environment.

WHY IT NEEDS A POLICY

Why star_project needs a policy

Starring a project creates a new association (user stars project) which is a reversible write operation. It has minimal blast radius since it does not modify code, issues, or any critical project data. It can be undone by unstarring.

From the tool's definition Star a project — starring is a reversible, non-destructive social/bookmark action that modifies a project's star count and the user's starred-projects list.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

star_project Rate-limited

star_project 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "star_project": {
      "limits": [
        {
          "counter": "star_project_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches GitLab MCP Server, so you can run agents against it safely.

FAQ

Questions about star_project

What does the star_project tool do? +

Star a project. It is categorised as a Write tool in the GitLab MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on star_project? +

Register the GitLab MCP Server MCP server in PolicyLayer and add a rule for star_project: 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 MCP Server. Nothing to install.

What risk level is star_project? +

star_project is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit star_project? +

Yes. Add a rate_limit block to the star_project 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.

How do I block star_project completely? +

Set action: deny in the PolicyLayer policy for star_project. 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.

What MCP server provides star_project? +

star_project is provided by the GitLab MCP Server MCP server (skmprb/gitlab-clone-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.