extract_key_bpm
Analyze audio files to identify musical key and tempo (BPM), providing essential metadata for music production and analysis.
Instructions
Extract musical key and BPM (tempo) from audio
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| audio_url | Yes | URL of the audio file to analyze | |
| webhook_url | No | URL for callback upon completion |
Implementation Reference
- src/index.ts:1230-1248 (handler)The main handler function for the 'extract_key_bpm' tool. Validates input, makes an HTTP POST request to the external API endpoint '/extract_key_bpm', and returns the API response containing task information.
private async handleExtractKeyBpm(args: any) { if (!args.audio_url) { throw new McpError(ErrorCode.InvalidParams, "audio_url is required"); } const response = await this.axiosInstance.post("/extract_key_bpm", { audio_url: args.audio_url, webhook_url: args.webhook_url, }); return { content: [ { type: "text", text: `Key and BPM extraction started!\n\n${JSON.stringify(response.data, null, 2)}\n\nUse get_conversion_by_id with the task_id to check the status.`, }, ], }; } - src/index.ts:543-560 (registration)Tool registration in the TOOLS array, including name, description, and input schema. This array is returned by the ListTools request handler.
{ name: "extract_key_bpm", description: "Extract musical key and BPM (tempo) from audio", inputSchema: { type: "object" as const, properties: { audio_url: { type: "string", description: "URL of the audio file to analyze", }, webhook_url: { type: "string", description: "URL for callback upon completion", }, }, required: ["audio_url"], }, }, - src/index.ts:715-716 (helper)Dispatch case in the main tool execution switch statement that routes calls to the 'extract_key_bpm' handler.
case "extract_key_bpm": return await this.handleExtractKeyBpm(args); - src/index.ts:546-559 (schema)Input schema definition for the 'extract_key_bpm' tool, specifying parameters and validation.
inputSchema: { type: "object" as const, properties: { audio_url: { type: "string", description: "URL of the audio file to analyze", }, webhook_url: { type: "string", description: "URL for callback upon completion", }, }, required: ["audio_url"], },