claim_task_for_execution · Dag Planner MCP: Risk & Policy

WHAT IT DOES

What claim_task_for_execution does on Dag Planner

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

WHY IT NEEDS A POLICY

Why claim_task_for_execution needs a policy

The tool creates or modifies task state (claiming ownership) without executing the task itself or destroying data. It is reversible—the claim can be released. This is a Write operation. Severity is medium because improper claiming could block legitimate task execution or cause confusion in a workflow, but the blast radius is limited to task scheduling state rather than data integrity or financial impact.

From the tool's definition Tool description states: 'Claim a ready task for exclusive execution.' This modifies state by marking a task as claimed/assigned, a reversible operation that changes task status.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

claim_task_for_execution Rate-limited

claim_task_for_execution 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": {
    "claim_task_for_execution": {
      "limits": [
        {
          "counter": "claim_task_for_execution_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 Dag Planner, so you can run agents against it safely.

FAQ

Questions about claim_task_for_execution

What does the claim_task_for_execution tool do? +

Claim a ready task for exclusive execution. It is categorised as a Write tool in the Dag Planner MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on claim_task_for_execution? +

Register the Dag Planner MCP server in PolicyLayer and add a rule for claim_task_for_execution: 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 Dag Planner. Nothing to install.

What risk level is claim_task_for_execution? +

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

Can I rate-limit claim_task_for_execution? +

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

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

claim_task_for_execution is provided by the Dag Planner MCP server (shubhamnegi/dag-planner-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.