This record as markdown: /tools/yanhuifair-godot-mcp/set-bus-volume.md
What set_bus_volume does on Godot
AI agents use set_bus_volume to create or update resources in Godot, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Godot environment.
| Parameter | Type | Required | Description |
|---|---|---|---|
bus_name | object | — | Bus name, e.g. "Music". Alternative to bus_index. |
bus_index | object | — | Bus index. Give this or bus_name. |
volume_db | number | Yes | Volume in dB (e.g. -6.0, 0.0, 3.0) |
layout_path | object | — |
Parameters from the server's own tool schema.
Why set_bus_volume is rated Medium
Modifies audio bus volume settings reversibly without destructive or financial consequences.
From the tool's definition Set bus volume in dB; audio configuration modification.
Attacks that exploit this kind of access
The rule that runs set_bus_volume safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Godot, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For set_bus_volume, this is the rule to start with:
set_bus_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.
The button opens the PolicyLayer dashboard: create your workspace, connect Godot, apply this rule, and every set_bus_volume call is checked against it from then on.
Questions about set_bus_volume
Set bus volume in dB. It is categorised as a Write tool in the Godot MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
set_bus_volume accepts 4 parameters: bus_name, bus_index, volume_db, layout_path. Required: volume_db. The full parameter table on this page comes from the server's own tool schema.
Register the Godot MCP server in PolicyLayer and add a rule for set_bus_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 Godot. Nothing to install.
set_bus_volume is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the set_bus_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.
Set action: deny in the PolicyLayer policy for set_bus_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.
set_bus_volume is provided by the Godot MCP server (@yanhuifair/godot-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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