uncomplete_todo · Jikan MCP: Risk & Policy

WHAT IT DOES

What uncomplete_todo does on Jikan

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

WHY IT NEEDS A POLICY

Why uncomplete_todo needs a policy

This tool modifies the state of a todo item by removing its completion status for today. This is a Write operation because it reversibly changes data. Severity is low because: (1) the change is easily reversible (the todo can be completed again), (2) the blast radius is limited to a single user's todo item, and (3) no permanent data loss or financial impact occurs.

From the tool's definition Tool description explicitly states 'Remove a todo completion' which is a modification operation. The action is reversible and non-destructive (a todo can be marked complete again). No data is deleted or destroyed, only the completion status is reverted.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

uncomplete_todo Rate-limited

uncomplete_todo 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": {
    "uncomplete_todo": {
      "limits": [
        {
          "counter": "uncomplete_todo_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 Jikan, so you can run agents against it safely.

FAQ

Questions about uncomplete_todo

What does the uncomplete_todo tool do? +

Remove a todo completion for today. Free (0 credits). It is categorised as a Write tool in the Jikan MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on uncomplete_todo? +

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

What risk level is uncomplete_todo? +

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

Can I rate-limit uncomplete_todo? +

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

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

uncomplete_todo is provided by the Jikan MCP server (thunderrabbit/jikan). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.