tb_claim · Forgespec MCP: Risk & Policy

WHAT IT DOES

What tb_claim does on Forgespec

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

WHY IT NEEDS A POLICY

Why tb_claim needs a policy

Claiming a task is a reversible state change (Write) on the task board — it assigns ownership of a task but does not execute code, delete data, or move money. The description is truncated ('Only claims tasks in...'), which slightly lowers confidence, but the core action is a state update on a task record.

From the tool's definition 'Claim a task for execution' — marks a task as claimed/assigned, modifying task board state reversibly

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

tb_claim Rate-limited

tb_claim 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": {
    "tb_claim": {
      "limits": [
        {
          "counter": "tb_claim_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 Forgespec, so you can run agents against it safely.

FAQ

Questions about tb_claim

What does the tb_claim tool do? +

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

How do I enforce a policy on tb_claim? +

Register the Forgespec MCP server in PolicyLayer and add a rule for tb_claim: 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 Forgespec. Nothing to install.

What risk level is tb_claim? +

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

Can I rate-limit tb_claim? +

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

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

tb_claim is provided by the Forgespec MCP server (lleontor705/forgespec-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.