set_channel_volume · Flai MCP: Risk & Policy

WHAT IT DOES

What set_channel_volume does on Flai

AI agents use set_channel_volume to create or update resources in Flai — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Flai environment.

WHY IT NEEDS A POLICY

Why set_channel_volume needs a policy

This tool modifies mixer channel volume settings, which is a reversible state change (volume can be adjusted back). It does not execute arbitrary code, delete data, move money, or cause irreversible harm. While it could degrade audio quality if misused, the effect is limited to a single channel's volume parameter and easily corrected.

From the tool's definition Tool 'set_channel_volume' performs a modification action (set/update) on channel volume parameters in FL Studio. The description explicitly states it 'Set[s] the volume of a channel,' indicating a write operation that changes mixer state.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_channel_volume Rate-limited

set_channel_volume 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": {
    "set_channel_volume": {
      "limits": [
        {
          "counter": "set_channel_volume_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Flai, so you can run agents against it safely.

FAQ

Questions about set_channel_volume

What does the set_channel_volume tool do? +

Set the volume of a channel. It is categorised as a Write tool in the Flai MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set_channel_volume? +

Register the Flai MCP server in PolicyLayer and add a rule for set_channel_volume: 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 Flai. Nothing to install.

What risk level is set_channel_volume? +

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

Can I rate-limit set_channel_volume? +

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

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

set_channel_volume is provided by the Flai MCP server (kaupau/flai-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.