update_task_description · Trello Task Manager MCP

WHAT IT DOES

What update_task_description does on Trello Task Manager MCP

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

WHY IT NEEDS A POLICY

Why update_task_description needs a policy

The tool modifies task data (description field) but does not create permanent deletion, execute arbitrary code, or involve financial transactions. It is reversible—the previous description can be restored. The blast radius is medium because an AI agent could spam descriptions, redirect task context, or cause confusion in task management workflows, but the damage is containable and undoable.

From the tool's definition Tool name 'update_task_description' and description 'Update the description of an existing task' indicate modification of existing data. This is a reversible change to task metadata within Trello.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_task_description Rate-limited

update_task_description 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_task_description": {
      "limits": [
        {
          "counter": "update_task_description_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 Trello Task Manager MCP, so you can run agents against it safely.

FAQ

Questions about update_task_description

What does the update_task_description tool do? +

Update the description of an existing task. It is categorised as a Write tool in the Trello Task Manager MCP 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_task_description? +

Register the Trello Task Manager MCP server in PolicyLayer and add a rule for update_task_description: 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 Trello Task Manager MCP. Nothing to install.

What risk level is update_task_description? +

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

Can I rate-limit update_task_description? +

Yes. Add a rate_limit block to the update_task_description 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_task_description completely? +

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

update_task_description is provided by the Trello Task Manager MCP server (namuan/trello-task-manager-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.