The playground
Try any of 919 endpoints — live.
Pick an endpoint, load a working example, tweak the params, and send — no signup to try. Results render the way the data deserves; raw JSON, headers & code are one tab away.
Playground demo key · api.reefapi.com
post/dev-utils/v1/text_analyze2 credits
Algorithmic text analysis (no LLM): language detect (97 langs) · readability (Flesch & co) · profanity flag/censor · keyword extraction · full stats. Pick checks or get all.
Working example
Parameters
The text to analyze.
Which analyses to run (default all): language, readability, profanity, keywords, stats.
How many keywords to extract. (1–50)
request preview
curl -X POST https://api.reefapi.com/dev-utils/v1/text_analyze \
-H "x-api-key: $REEF_KEY" \
-H "content-type: application/json" \
-d '{"input":"The quick brown fox jumps over the lazy dog. The fox is fast."}'Hit Send to run this endpoint live.