quantize · Filopastry MCP: Risk & Policy

WHAT IT DOES

What quantize does on Filopastry

AI agents use quantize 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 quantize needs a policy

Quantization modifies data (adjusts timing or pitch values to align with a grid) but does not create destructive irreversible changes, execute external code, or access sensitive resources. The operation is reversible—the original data can be recovered. Low severity because misuse would only affect the current audio/pattern project without external side effects or data loss.

From the tool's definition The tool 'quantize' with description 'Quantize to grid' modifies audio or pattern data by rounding values to discrete grid points. This is a write operation that adjusts existing pattern/audio data reversibly.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

quantize Rate-limited

quantize 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": {
    "quantize": {
      "limits": [
        {
          "counter": "quantize_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 quantize

What does the quantize tool do? +

Quantize to grid. 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 quantize? +

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

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

Can I rate-limit quantize? +

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

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

quantize 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.