# Datamuse API

Find rhymes, related words, spelling matches, and autocomplete suggestions.

- Canonical guide: https://findpublicapis.com/apis/datamuse/
- Category: Language
- Authentication: No key
- Access: Free tier
- Documentation reviewed: 2026-09-16 (not live uptime testing)
- Official documentation: https://www.datamuse.com/api/

## What you could build
Build a rhyme finder or a word-game helper with meaning and spelling filters.

## Usage conditions
No key is needed until 1 January 2027, when the provider says API keys will become mandatory. The documented allowance is 100,000 requests/day. Credit Datamuse in public apps and contact the provider for customer-facing use.

## Example endpoint
https://api.datamuse.com/words?rel_rhy=light&max=10

Browser requests require provider CORS support. Confirm current access, pricing, and usage rights with the provider.