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Playground demo key · api.reefapi.com
post/currency/v1/fluctuation2 credits

per-currency change over a date range: {CUR:{start_rate,end_rate,change,change_pct}} (derived from the range endpoints)

Working example
Parameters
⌘↵
request preview
curl -X POST https://api.reefapi.com/currency/v1/fluctuation \
  -H "x-api-key: $REEF_KEY" \
  -H "content-type: application/json" \
  -d '{"start":"2024-01-02","end":"2024-01-31","base":"EUR","symbols":"USD"}'

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