{"uid":"cap_JYlgy6Jszy7PvvfSnrxCF","slug":"tag-per-track-musical-audio-analysis-api-a6ddde4a","name":"Tag-per-Track Musical Audio Analysis API","description":"Tag-per-Track: Agentic-First Musical Audio Analysis API. Extracts BPM, Key, Mood, Genres and Instruments from audio URLs.","url":"https://api.tag-per-track.cloud/api/analyze","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"fileUrl":{"type":"string","description":"URL of the audio file to analyze (mp3, wav, etc.)"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_9PTsLYq5iE1u5ZrkHtoL6","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Analyzes an audio file URL to extract BPM, musical key, mood, genres, and instruments","exampleAgentPrompt":"Can you analyze this audio file and tell me its BPM, musical key, mood, genre, and what instruments are playing? Here's the URL: https://example.com/track.mp3","exampleUseCases":[{"title":"Auto-tag uploaded music tracks","prompt":"I just uploaded a new track to my storage bucket at https://mybucket.s3.amazonaws.com/newtrack.mp3 — can you analyze it and tell me the BPM, key, mood, genres, and instruments so I can tag it properly in my library?"},{"title":"DJ set tempo and key matching","prompt":"I need to know the BPM and musical key of this track before I mix it into my set — can you analyze https://cdn.djstore.com/tracks/housetrack.mp3 and give me the tempo and key?"},{"title":"Music catalog enrichment pipeline","prompt":"We have a track at https://media.musiclabel.com/releases/song42.wav that needs metadata — please extract the BPM, key, mood, genre, and instruments from it so we can add those tags to our catalog."}],"resultDescription":"Returns extracted musical metadata including BPM (tempo), musical key, mood classification, genre tags, and identified instruments present in the audio track","failureModes":["Audio URL is inaccessible or returns a non-200 response — analysis cannot proceed","Unsupported audio format causes parsing failure","Audio file is too short or contains no musical content, leading to low-confidence or empty results","Network timeout fetching the remote audio file","Payment not processed correctly via x402 protocol, resulting in 402 error"],"whenToPreferThis":"Choose this endpoint when you need structured musical metadata (BPM, key, mood, genre, instruments) extracted from an audio file accessible via URL. It is purpose-built for music analysis in agentic pipelines, supports common formats like MP3 and WAV, and is optimized for per-track pricing at $0.05 USDC. Prefer this over general audio transcription or speech analysis services when the input is music rather than speech.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T18:36:59.506Z","isFirstParty":false}