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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.