Find Public APIsA building block for your next idea.
Build a rhyme finder or a word-game helper with meaning and spelling filters.
Know before you build
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.
Check current provider documentation ↗Your first request
Start with this documented example. Replace credential placeholders with your own test credentials. Browser execution depends on the provider’s CORS policy.
curl --request GET 'https://api.datamuse.com/words?rel_rhy=light&max=10'Practical questions
What can I build with Datamuse?+
Build a rhyme finder or a word-game helper with meaning and spelling filters.
Does Datamuse need authentication?+
The reviewed example is listed as “No key”. 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.
Can I call Datamuse from a browser?+
Browser access depends on the provider’s CORS policy for your origin, method, and headers. The playground makes a direct request and cannot bypass those restrictions.
Sources & confidence
Provider documentation was reviewed on 16 September 2026. This is not a live availability test or an endorsement.
Source catalogs can become outdated. Read our review and attribution policy. Plain-text guide ↗