block_task · Keshro MCP: Risk & Policy

WHAT IT DOES

What block_task does on Keshro MCP

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

WHY IT NEEDS A POLICY

Why block_task needs a policy

Blocking a task reverses a task's active status without permanently deleting it, making it a reversible modification (Write) rather than destructive. Within a project management context for 'high-stakes engineering projects,' blocking tasks affects workflow state and could impact team coordination, warranting medium severity.

From the tool's definition Tool name 'block_task' suggests modification of task state. Server context shows task management operations (complete_task, edit_task, add_task) that are Write operations. Description is empty, limiting certainty.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

block_task Rate-limited

block_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": {
    "block_task": {
      "limits": [
        {
          "counter": "block_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 Keshro MCP, so you can run agents against it safely.

FAQ

Questions about block_task

What does the block_task tool do? +

block_task. It is categorised as a Write tool in the Keshro 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 block_task? +

Register the Keshro MCP server in PolicyLayer and add a rule for block_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 Keshro MCP. Nothing to install.

What risk level is block_task? +

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

Can I rate-limit block_task? +

Yes. Add a rate_limit block to the block_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 block_task completely? +

Set action: deny in the PolicyLayer policy for block_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 block_task? +

block_task is provided by the Keshro MCP server (jlewitt1/keshro-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.