Idempotency

Safe retries with Idempotency-Key.

Send an Idempotency-Key header on a write. The first request with a given (organization, endpoint, key) runs normally and its response is stored; retries with the same key replay the stored response without re-running work or re-metering.

Reusing a key with a different body is rejected. Keys expire automatically.

Try it

curl -X POST https://messyapi.com/api/v1/repair \
  -H "Authorization: Bearer $MESSYAPI_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "records": [
    {
      "Company Name": "ACME, INC.",
      "Email": " JOHN@ACME.COM "
    }
  ]
}'

Open in playground →Starter project →Use with Claude / Cursor →