atp_decompose_task · ATP Librarian MCP Server MCP

WHAT IT DOES

What atp_decompose_task does on ATP Librarian MCP Server

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

WHY IT NEEDS A POLICY

Why atp_decompose_task needs a policy

The tool creates or modifies data structures within the task graph (subgraph creation, parent task conversion) but does not irreversibly delete data or execute arbitrary external operations. The changes are structural modifications to the .atp.json contract state, making it a Write action.

From the tool's definition Tool description states it 'Decomposes a task into a new subgraph and converts the parent into a scope' — this modifies the task dependency graph structure by creating new subgraph entities and converting existing parent tasks, which are reversible write…

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

atp_decompose_task Rate-limited

atp_decompose_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": {
    "atp_decompose_task": {
      "limits": [
        {
          "counter": "atp_decompose_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 ATP Librarian MCP Server, so you can run agents against it safely.

FAQ

Questions about atp_decompose_task

What does the atp_decompose_task tool do? +

Decomposes a task into a new subgraph and converts the parent into a scope. It is categorised as a Write tool in the ATP Librarian 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 atp_decompose_task? +

Register the ATP Librarian MCP Server MCP server in PolicyLayer and add a rule for atp_decompose_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 ATP Librarian MCP Server. Nothing to install.

What risk level is atp_decompose_task? +

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

Can I rate-limit atp_decompose_task? +

Yes. Add a rate_limit block to the atp_decompose_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 atp_decompose_task completely? +

Set action: deny in the PolicyLayer policy for atp_decompose_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 atp_decompose_task? +

atp_decompose_task is provided by the ATP Librarian MCP Server MCP server (manuelcecchetto/atp-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.