todoist_task_update · Mcp Todoist MCP: Risk & Policy

WHAT IT DOES

What todoist_task_update does on Mcp Todoist

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

WHY IT NEEDS A POLICY

Why todoist_task_update needs a policy

This tool creates or modifies data reversibly by updating task properties. It does not delete data (Destructive), execute arbitrary code (Execute), transfer money (Financial), or merely read data (Read). The medium severity reflects that an agent could corrupt task data across a user's task list, but changes are typically reversible through Todoist's undo or edit history features.

From the tool's definition Tool name 'todoist_task_update' and description 'Update an existing task' indicates modification of existing data. Supports updating content, description, due date, priority, labels, deadline, project, section, and duration — all reversible changes.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

todoist_task_update Rate-limited

todoist_task_update 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": {
    "todoist_task_update": {
      "limits": [
        {
          "counter": "todoist_task_update_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 Mcp Todoist, so you can run agents against it safely.

FAQ

Questions about todoist_task_update

What does the todoist_task_update tool do? +

Update an existing task found by ID or partial name search. Supports updating content, description, due date, priority, labels, deadline, project, section, and duration. It is categorised as a Write tool in the Mcp 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 todoist_task_update? +

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

What risk level is todoist_task_update? +

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

Can I rate-limit todoist_task_update? +

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

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

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