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Playground demo key · api.reefapi.com
post/change-detect/v1/monitor_check1 credit

The stateless half of monitoring: re-fetch the URL and tell you FAST whether it changed since a known hash. Pass baseline_hash (+ optional selector/mode). Returns changed(bool) + current_hash + a short diff_summary — the cheap 'did it change?' path.

Working example
Parameters
request preview
curl -X POST https://api.reefapi.com/change-detect/v1/monitor_check \
  -H "x-api-key: $REEF_KEY" \
  -H "content-type: application/json" \
  -d '{"url":"https://example.com","baseline_hash":"0000000000000000000000000000000000000000000000000000000000000000"}'

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