Build with
the details
behind the music.
Look up BPM, key and other available audio features. Match tracks by title and artist, or work through playlists with saved bulk jobs.
1,000 API lookups per month on Free. No credit card required.
Coverage varies by recording and source. Missing measurements are returned as null.
Start with a title and artist, inspect match confidence, then request its features.
Submit a saved bulk job, follow per-track progress and retrieve the results.
Add available audio features to music discovery tools, dashboards and catalog workflows.
Have a bigger playlist? Start with Dev.
25,000 API lookups and a separate allowance of 1,000 bulk tracks each month. Up to 250 tracks per job. $19 per month.
Find software signals
on a website.
Check one public HTML page for signs of supported booking, payment and other business software. Inspect the evidence to assess each detection.
Explore LookupEvidence: public booking link
Evidence: public page script
Fill the PDF
you already use.
Inspect exact field names, validate your data, and return a completed PDF. Keep reusable mappings beside your templates and retry safely.
Explore FormRailCheck compatibility before filling
25 free fills to start
Put the APIs to work.
Integration guides, practical examples and notes from building the tools.
Spotify Audio Features API Alternative: What Actually Works in 2026
Compare options for BPM, key and audio feature data when your Spotify app cannot access Audio Features. Includes MeloData coverage, pricing and limitations.
Why I Built MeloData for Music Audio Feature Lookups
How MeloData uses archive data and preview analysis for music feature lookups, with caching, name resolution and explicit coverage limits.
Fill Existing PDF Forms with FormRail
Inspect real PDF fields, validate values, and fill an existing template with a Node.js example and credit-safe retries.
Try it with the tracks you actually use.
Check coverage on Free, then choose the capacity your project needs.