Authentication

Bearer keys and accepted headers.

Send your key in either header — they are equivalent:

Authorization: Bearer messy_live_...
# or
X-Zapinner-Key: messy_live_...

The legacy X-Zapiit-Key header is still accepted for backwards compatibility. RapidAPI subscribers are authenticated automatically by the RapidAPI proxy and don't send a key.

A missing key returns 401 unauthorized; an unknown key 401 invalid_api_key; a revoked key 401 revoked_api_key.

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 →