add_swing · Filopastry MCP: Risk & Policy

WHAT IT DOES

What add_swing does on Filopastry

AI agents use add_swing 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 add_swing needs a policy

This tool modifies an existing music pattern by adding swing rhythm characteristics. While creative and non-destructive, it irreversibly changes pattern data. The blast radius is medium because misuse could corrupt or undesirably alter musical compositions in progress, but effects are reversible (can be removed or undone).

From the tool's definition Tool name 'add_swing' and description 'Add swing to pattern' indicate modification of audio/music pattern data. The verb 'add' shows data transformation rather than retrieval or destruction.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_swing Rate-limited

add_swing 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": {
    "add_swing": {
      "limits": [
        {
          "counter": "add_swing_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 add_swing

What does the add_swing tool do? +

Add swing to 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 add_swing? +

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

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

Can I rate-limit add_swing? +

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

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

add_swing 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.