{"access":{"authentication":{"format":"L402 {macaroon}:{proof_of_payment}","header":"Authorization","protocols":["L402","MPP"],"format_mpp":"Payment <base64url_json>"},"endpoint":"https://sats4ai.com/api/l402/extract-receipt","method":"POST"},"content_type":"api","description":"Extract structured data from receipts, invoices, and financial documents. Returns JSON with merchant, date, items, totals, tax, etc. Send parameters as JSON:\n```\n{\n    \"document\": \"data:image/jpeg;base64,...\"\n}\n```\nSupports images (JPEG, PNG, WEBP) and PDFs.","name":"Receipt Extraction"}