Extract musical key and BPM (tempo) from audio
AI agents call extract_key_bpm to retrieve information from MusicGPT MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool analyzes audio files to determine their musical characteristics (key and tempo) and returns that information. It performs no modifications to the audio, executes no arbitrary code or commands, deletes nothing, and involves no financial transactions.
From the tool's definition Tool name 'extract_key_bpm' and description 'Extract musical key and BPM (tempo) from audio' indicate data retrieval and analysis with no modification, deletion, or execution of external operations.
Attacks that exploit this kind of access
Extract musical key and BPM (tempo) from audio. It is categorised as a Read tool in the MusicGPT MCP Server MCP Server, which means it retrieves data without modifying state.
Register the MusicGPT MCP Server MCP server in PolicyLayer and add a rule for extract_key_bpm: 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 MusicGPT MCP Server. Nothing to install.
extract_key_bpm is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the extract_key_bpm 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 extract_key_bpm. 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.
extract_key_bpm is provided by the MusicGPT MCP Server MCP server (pasie15/mcp-server-musicgpt). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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