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Datamuse

A word-finding engine for rhymes, synonyms and more

📚 Open DataUNMONITOREDchecked 12 min ago
AUTH NONECORS ✓AGENT ✓HTTPS ✓COMMERCIAL ?

Datamuse answers word queries: give it constraints like 'rhymes with blue' or 'means almost the same as X' and it returns ranked word suggestions as JSON. The /words endpoint takes parameters such as rel_rhy, ml and sp, all keyless. Great for writing tools, word games and autocomplete.

—HOW IT'S SCORED ⓘ
▶ Run liveDocs ↗
Status badge · for your READMEshipapis health badge: — · unmonitored
Uptime history
—%90 days
—%30 days
—P50 · ms
—P95 · ms
operationalpartialdownno data
Live response samplecaptured by our last successful check
GET https://api.datamuse.com/words?rel_rhy=blue&max=2

[
  {
    "word": "slew",
    "score": 41039,
    "numSyllables": 1
  },
  {
    "word": "subdue",
    "score": 31034,
    "numSyllables": 2
  }
]
Call itcurl · fetch · python
curl "https://api.datamuse.com/words?rel_rhy=blue&max=2"
const res = await fetch("https://api.datamuse.com/words?rel_rhy=blue&max=2");
const data = await res.json();
console.log(data);
import requests

res = requests.get("https://api.datamuse.com/words?rel_rhy=blue&max=2")
print(res.json())
Endpoints · 6On scheduleFULL DOCS ↗
First rollup pending — GET /words?rel_rhy=blue&max=2 has been probed
GET/words?rel_rhy=blue&max=2PROBED

A word-finding engine for rhymes, synonyms and more

GET/words?limit=5

Words — documented GET route.

GET/words?page=1

Words — documented GET route.

GET/words?ml=ringing+in+the+ears&max=4

Words — documented GET route.

GET/metrics

Operational metrics.

GET/words?ml=ringing+in+the+ears

Words — documented GET route.

Machine-readable spec

We probe a documented GET and expect 2xx JSON — full uptime and health score. Export includes every documented route below.

Response-shape history

Stable. No schema drift observed since monitoring began — the response shape has not changed under our checks.

Datamuse: common questions

Is Datamuse free to use?

Yes — Datamuse is a free open data API. Free tier: Free — limits not published. Whether the free tier allows commercial use is unclear — check the provider docs.

Does Datamuse need an API key?

No — Datamuse needs no API key or signup. You can call it straight away; rate limits still apply (Unpublished).

Can I call Datamuse from the browser?

Yes — Datamuse returns CORS headers over HTTPS, so front-end code can fetch it directly with no backend proxy. Use the fetch snippet on this page, or hit "Run live" to try it now.

Is Datamuse up right now?

As of our last scheduled check, Datamuse is unmonitored. We re-probe it every sweep — the status badge and uptime chart above always show the latest.