generate_chord_progression · Filopastry MCP: Risk & Policy

WHAT IT DOES

What generate_chord_progression does on Filopastry

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

WHY IT NEEDS A POLICY

Why generate_chord_progression needs a policy

This tool generates (creates) a chord progression, which is a Write operation producing new data. It does not execute code directly, delete data, or involve financial transactions. Severity is low as misuse has minimal blast radius — it only produces musical pattern output.

From the tool's definition "Generate chord progression" — creates a new musical pattern/data structure within the Strudel.cc environment

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

generate_chord_progression Rate-limited

generate_chord_progression 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": {
    "generate_chord_progression": {
      "limits": [
        {
          "counter": "generate_chord_progression_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 Filopastry, so you can run agents against it safely.

FAQ

Questions about generate_chord_progression

What does the generate_chord_progression tool do? +

Generate chord progression. It is categorised as a Write tool in the Filopastry MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on generate_chord_progression? +

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

What risk level is generate_chord_progression? +

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

Can I rate-limit generate_chord_progression? +

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

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

generate_chord_progression is provided by the Filopastry MCP server (youwenshao/filopastry). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.