create_tags · GitLab MCP Server MCP: Risk & Policy

WHAT IT DOES

What create_tags does on GitLab MCP Server

AI agents use create_tags 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 create_tags needs a policy

Creating tags is a Write-category operation because it creates new metadata in the repository that can be modified or deleted later (reversible). Tags are not destructive in themselves—they are annotations/pointers to commits.

From the tool's definition Tool name 'create_tags' and description 'Create a new tag in a GitLab project' indicate creation of repository metadata (tags). This is explicitly a creation operation that modifies repository state.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_tags Rate-limited

create_tags 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": {
    "create_tags": {
      "limits": [
        {
          "counter": "create_tags_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 create_tags

What does the create_tags tool do? +

Create a new tag in a GitLab 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 create_tags? +

Register the GitLab MCP Server MCP server in PolicyLayer and add a rule for create_tags: 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 create_tags? +

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

Can I rate-limit create_tags? +

Yes. Add a rate_limit block to the create_tags 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 create_tags completely? +

Set action: deny in the PolicyLayer policy for create_tags. 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 create_tags? +

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