link_task_git_ref · Todos MCP: Risk & Policy

WHAT IT DOES

What link_task_git_ref does on Todos

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

WHY IT NEEDS A POLICY

Why link_task_git_ref needs a policy

This tool creates or updates a relationship between a git reference (branch/PR) and a task. 'Upserts' confirms it writes/modifies data reversibly with no destructive or financial implications. Low severity as it only manages metadata linkages.

From the tool's definition Link a local git branch or pull request to a task. Upserts on task, ref_type, and name.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

link_task_git_ref Rate-limited

link_task_git_ref 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": {
    "link_task_git_ref": {
      "limits": [
        {
          "counter": "link_task_git_ref_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 Todos, so you can run agents against it safely.

FAQ

Questions about link_task_git_ref

What does the link_task_git_ref tool do? +

Link a local git branch or pull request to a task. Upserts on task, ref_type, and name. It is categorised as a Write tool in the Todos MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on link_task_git_ref? +

Register the Todos MCP server in PolicyLayer and add a rule for link_task_git_ref: 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 Todos. Nothing to install.

What risk level is link_task_git_ref? +

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

Can I rate-limit link_task_git_ref? +

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

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

link_task_git_ref is provided by the Todos MCP server (@hasna/todos). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.