update_changelog · Todos MCP: Risk & Policy

WHAT IT DOES

What update_changelog does on Todos

AI agents use update_changelog 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_changelog needs a policy

This tool creates or modifies data (the CHANGELOG.md file) in a reversible manner. It prepends a changelog section, which means it writes/updates the file but does not permanently delete content. While it affects documentation files, the change is reversible through standard version control or manual editing. This fits the Write category.

From the tool's definition Tool description states it will 'Prepend a generated changelog section to CHANGELOG.md', which modifies an existing file by adding content.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_changelog Rate-limited

update_changelog 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_changelog": {
      "limits": [
        {
          "counter": "update_changelog_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_changelog

What does the update_changelog tool do? +

Prepend a generated changelog section to CHANGELOG.md. 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_changelog? +

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

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

Can I rate-limit update_changelog? +

Yes. Add a rate_limit block to the update_changelog 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_changelog completely? +

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

update_changelog 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.