update_milestone · Todos MCP: Risk & Policy

WHAT IT DOES

What update_milestone does on Todos

AI agents use update_milestone 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 update_milestone needs a policy

This tool creates or modifies data reversibly. Updating a milestone changes project planning metadata but does not delete data or trigger external operations. The scope is local roadmap management, making it a Write operation with medium severity due to potential impact on project tracking and team coordination if misapplied by an agent.

From the tool's definition Tool name 'update_milestone' and description 'Update a local roadmap milestone' indicate modification of existing data. The word 'Update' is the key verb, and 'local roadmap milestone' is the resource being modified.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_milestone Rate-limited

update_milestone 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": {
    "update_milestone": {
      "limits": [
        {
          "counter": "update_milestone_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 update_milestone

What does the update_milestone tool do? +

Update a local roadmap milestone. 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 update_milestone? +

Register the Todos MCP server in PolicyLayer and add a rule for update_milestone: 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 update_milestone? +

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

Can I rate-limit update_milestone? +

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

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

update_milestone 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.