ai_enhance_pattern · Filopastry MCP: Risk & Policy

WHAT IT DOES

What ai_enhance_pattern does on Filopastry

AI agents use ai_enhance_pattern 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 ai_enhance_pattern needs a policy

This tool modifies existing musical patterns in the Strudel live coding environment. The action is reversible (patterns can be changed again or reverted), so it falls under Write rather than Destructive. The severity is medium because misuse could corrupt a user's musical work or produce unintended audio output, but the damage is reversible and affects only the current session's pattern state.

From the tool's definition Tool description states it can 'Enhance or modify the current pattern' - 'modify' indicates reversible alteration of pattern data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

ai_enhance_pattern Rate-limited

ai_enhance_pattern 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": {
    "ai_enhance_pattern": {
      "limits": [
        {
          "counter": "ai_enhance_pattern_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 ai_enhance_pattern

What does the ai_enhance_pattern tool do? +

Enhance or modify the current pattern using AI suggestions. 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 ai_enhance_pattern? +

Register the Filopastry MCP server in PolicyLayer and add a rule for ai_enhance_pattern: 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 ai_enhance_pattern? +

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

Can I rate-limit ai_enhance_pattern? +

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

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

ai_enhance_pattern 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.