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Datamuse

A word-finding engine for rhymes, synonyms and more

📚 Open DataHEALTHYchecked 5h 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.

94HOW IT'S SCORED ⓘ
Docs ↗
Status badge · for your READMEshipapis health badge: 94 · healthy
Uptime history
92.2%90 days
86.7%30 days
180P50 · ms
926P95 · ms
operationalpartialdownno data
Response time · last 48 checks
Fastest 40 ms, slowest 608 ms, most recent 70 ms.
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())

BROWSER CALLS BLOCKED (NO CORS/HTTPS) — USE THE CURL SNIPPET

Endpoints · 6HealthyFULL DOCS ↗
Monitored path responding — GET /words?rel_rhy=blue&max=2180 mschecked 5h ago
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 You can call it straight away; rate limits still apply (Unpublished).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?

Not directly — Datamuse doesn't send browser-friendly CORS headers, so call it from a server or proxy instead. Copy the curl or Python snippet on this page to get started.

Is Datamuse up right now?

As of our last scheduled check, Datamuse is healthy with 92.2% uptime over 90 days and a 180 ms median response. We re-probe it every sweep — the status badge and uptime chart above always show the latest.