Developer API & Research Platform

SheetSage RESTful API & MERT-v2 Acoustic Embeddings

Integrate state-of-the-art full-song transcription, millisecond downbeat & chord alignment, and multi-layer musical embeddings into your product, research, or pipeline with just a few lines of code.

API Key Authentication

Standard Bearer Token authorization header. Create, rotate, and manage rate limits anytime in your user settings.

Time-Aligned Theory Events (events.json)

Structured output including downbeats, beat subdivisions, chord switch millisecond timestamps, and pitch events.

MERT-v2 24-Layer Neural Feature Embeddings

Acoustic and harmonic representation vectors extracted from the transformer layers for downstream MIR and AI music analysis.

curl -X POST https://sheetsage.ai/api/v1/transcribe \
  -H "Authorization: Bearer ss_live_your_api_key_here" \
  -H "Content-Type: application/json" \
  -d '{
    "audio_url": "https://example.com/recording.mp3",
    "mode": "full",
    "export_embeddings": true,
    "title": "My Track Transcription"
  }'