create_library · Pinako AI Bridge MCP: Risk & Policy

WHAT IT DOES

What create_library does on Pinako AI Bridge

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

WHY IT NEEDS A POLICY

Why create_library needs a policy

This tool creates a new library, which is a write operation that modifies state by adding a new entity. It is reversible (the library can be deleted), so it does not qualify as Destructive. The severity is medium because creating unwanted libraries could clutter the user's data organization, but the blast radius is limited to the user's own library namespace with no external or financial impact.

From the tool's definition Tool name 'create_library' and description indicate it 'Creates a new empty library' — a data creation operation with reversible side effects.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_library Rate-limited

create_library 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": {
    "create_library": {
      "limits": [
        {
          "counter": "create_library_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 Pinako AI Bridge, so you can run agents against it safely.

FAQ

Questions about create_library

What does the create_library tool do? +

Creates a new empty library with an auto-seeded. It is categorised as a Write tool in the Pinako AI Bridge MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_library? +

Register the Pinako AI Bridge MCP server in PolicyLayer and add a rule for create_library: 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 Pinako AI Bridge. Nothing to install.

What risk level is create_library? +

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

Can I rate-limit create_library? +

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

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

create_library is provided by the Pinako AI Bridge MCP server (teleomorph/pinako-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.