create_milestone · Todos MCP: Risk & Policy

WHAT IT DOES

What create_milestone does on Todos

AI agents use create_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 create_milestone needs a policy

This tool creates a new milestone entity in a task management system. It modifies the roadmap data structure by adding a new element, which is a reversible write operation. The blast radius is medium because adding a milestone could affect project planning and team coordination, but the operation is not destructive (can be removed) and does not involve financial transactions or code execution.

From the tool's definition Tool description states 'Add a local milestone to a roadmap.' The verb 'Add' indicates creation of new data (a milestone) that is reversible through standard update/delete operations.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_milestone Rate-limited

create_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": {
    "create_milestone": {
      "limits": [
        {
          "counter": "create_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 create_milestone

What does the create_milestone tool do? +

Add a local milestone to a roadmap. 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 create_milestone? +

Register the Todos MCP server in PolicyLayer and add a rule for create_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 create_milestone? +

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

Can I rate-limit create_milestone? +

Yes. Add a rate_limit block to the create_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 create_milestone completely? +

Set action: deny in the PolicyLayer policy for create_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 create_milestone? +

create_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.