uncomplete_task · Todoist MCP: Risk & Policy

WHAT IT DOES

What uncomplete_task does on Todoist

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

WHY IT NEEDS A POLICY

Why uncomplete_task needs a policy

The tool changes the state of a task by reverting its completion status. This is a modification (Write category) rather than destructive, since the action can be easily undone by completing the task again. Severity is medium because misuse could cause task status confusion in task lists, but no data is permanently lost and it doesn't affect financial systems or execute arbitrary code.

From the tool's definition Tool name 'uncomplete_task' and description 'Uncomplete a task' indicate a reversal of a task's completion status. This modifies existing data (marks a completed task as incomplete) but is fully reversible.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

uncomplete_task Rate-limited

uncomplete_task 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_task": {
      "limits": [
        {
          "counter": "uncomplete_task_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 Todoist, so you can run agents against it safely.

FAQ

Questions about uncomplete_task

What does the uncomplete_task tool do? +

Uncomplete a task. It is categorised as a Write tool in the Todoist 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_task? +

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

What risk level is uncomplete_task? +

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

Can I rate-limit uncomplete_task? +

Yes. Add a rate_limit block to the uncomplete_task 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_task completely? +

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

uncomplete_task is provided by the Todoist MCP server (stevengonsalvez/mcp-todoist). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.