remove_effect · Filopastry MCP: Risk & Policy

WHAT IT DOES

What remove_effect does on Filopastry

AI agents use remove_effect 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 remove_effect needs a policy

Removing an effect modifies the current music pattern/composition state by stripping an applied audio effect. This is a reversible modification (the effect can be re-added), placing it in the Write category. The description is minimal, so confidence is moderate. Severity is medium as misuse could alter or disrupt an ongoing composition.

From the tool's definition Tool name: 'remove_effect', description: 'Remove effect'

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

remove_effect Rate-limited

remove_effect 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": {
    "remove_effect": {
      "limits": [
        {
          "counter": "remove_effect_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 remove_effect

What does the remove_effect tool do? +

Remove effect. 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 remove_effect? +

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

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

Can I rate-limit remove_effect? +

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

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

remove_effect 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.