reopen_task · Todoist MCP Server MCP: Risk & Policy

WHAT IT DOES

What reopen_task does on Todoist MCP Server

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

WHY IT NEEDS A POLICY

Why reopen_task needs a policy

Reopening a task is a write operation that updates task metadata (completion status) reversibly. It does not delete, execute code, move money, or trigger external operations. The severity is medium because misuse could cause workflow disruption if an agent reopens many tasks unexpectedly, but the action is fully reversible via complete_task.

From the tool's definition Tool description states 'Reopen a completed task by its ID' - this modifies task state from completed back to active, a reversible change to existing data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

reopen_task Rate-limited

reopen_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": {
    "reopen_task": {
      "limits": [
        {
          "counter": "reopen_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 MCP Server, so you can run agents against it safely.

FAQ

Questions about reopen_task

What does the reopen_task tool do? +

Reopen a completed task by its ID. It is categorised as a Write tool in the Todoist MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on reopen_task? +

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

What risk level is reopen_task? +

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

Can I rate-limit reopen_task? +

Yes. Add a rate_limit block to the reopen_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 reopen_task completely? +

Set action: deny in the PolicyLayer policy for reopen_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 reopen_task? +

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