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Playground demo key · api.reefapi.com
post/domain-availability/v1/suggest1 credit

Name variations (prefix/suffix/TLD permutations, deterministic — no LLM) each with a live availability verdict; available ones surfaced first.

Working example
Parameters
request preview
curl -X POST https://api.reefapi.com/domain-availability/v1/suggest \
  -H "x-api-key: $REEF_KEY" \
  -H "content-type: application/json" \
  -d '{"name":"reefapi","tlds":"com,io,ai"}'

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