Step 1: Initial Request

Send your audio file (base64-encoded) with the desired operation type. You will receive a 402 Payment Required response.

curl -X POST https://sats4ai.com/api/l402/transcribe-audio \
-H "Content-Type: application/json" \
-d '{
  "file": "<base64-encoded-audio-data>",
  "type": "transcription",
  "language": "en"
}' \
-i

Expected Response Headers:

www-authenticate: L402 macaroon="<YOUR_MACAROON>", invoice="<LIGHTNING_INVOICE>"

Step 2: Pay the Lightning Invoice

Pay the invoice and save the preimage.

Step 3: Final Request

Send the exact same request with the Authorization header.

Important: The JSON payload must be identical to Step 1.

curl -X POST https://sats4ai.com/api/l402/transcribe-audio \
-H "Content-Type: application/json" \
-H "Authorization: L402 <YOUR_MACAROON_STRING_HERE>:<YOUR_PREIMAGE_HERE>" \
-d '{
  "file": "<base64-encoded-audio-data>",
  "type": "transcription",
  "language": "en"
}'

Expected Successful Response:

{ "text": "Hello, this is the transcribed text from your audio file." }

Request Body Parameters