ai_suggest_variations · Filopastry MCP: Risk & Policy

WHAT IT DOES

What ai_suggest_variations does on Filopastry

AI agents use ai_suggest_variations 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_suggest_variations needs a policy

This tool generates and creates new pattern variations, which modifies the working state by producing new output that would typically be used to replace or extend the current pattern. This is a Write operation as it produces new content that can be applied reversibly (patterns can be edited or reverted). It does not execute arbitrary code, destroy data, or involve financial transactions.

From the tool's definition The tool "ai_suggest_variations" with description "Generate AI-suggested variations of the current pattern" creates new musical pattern data. The verb 'generate' indicates creation of new content (variations) rather than merely retrieving existing data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

ai_suggest_variations Rate-limited

ai_suggest_variations 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_suggest_variations": {
      "limits": [
        {
          "counter": "ai_suggest_variations_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_suggest_variations

What does the ai_suggest_variations tool do? +

Generate AI-suggested variations of the current pattern. 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_suggest_variations? +

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

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

Can I rate-limit ai_suggest_variations? +

Yes. Add a rate_limit block to the ai_suggest_variations 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_suggest_variations completely? +

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

ai_suggest_variations 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.