# Services from api.tag-per-track.cloud on Zero

> api.tag-per-track.cloud serves 2 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/api.tag-per-track.cloud
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/api.tag-per-track.cloud/health.json

## Services

- [Tag-per-Track Audio Analysis with Lyrics](https://www.zero.xyz/c/tag-per-track-audio-analysis-with-lyrics-dbae24ba/llms.txt): $0.1/call via x402. Analyzes an audio file URL to extract BPM, key, mood, genres, instruments, and full lyrics simultaneously
- [Tag-per-Track Musical Audio Analysis API](https://www.zero.xyz/c/tag-per-track-musical-audio-analysis-api-a6ddde4a/llms.txt): $0.05/call via x402. Analyzes an audio file URL to extract BPM, musical key, mood, genres, and instruments

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)