{"name":"CSV Clinic Paid Downloads and Preflight API","version":"1.1.0","endpoint":{"method":"POST","path":"/api/csv/preflight"},"payment":{"protocol":"x402-v2","price":"$0.05","network":"Base Mainnet (eip155:8453)","asset":"USDC","account_required":false},"digital_product":{"name":"Shopify CSV Safe Update Kit","endpoint":"/api/download/shopify-safe-update-kit.zip","price":"$3.00 USDC on Base via x402","account_required":false},"additional_digital_products":[{"name":"EU Product Identifier Supplier Request Starter Kit","endpoint":"/api/download/eu-product-id-starter-kit.zip","price":"$3.00 USDC on Base via x402","account_required":false}],"request":{"content_type":"application/json","max_csv_bytes":262144,"fields":{"csv":"string (required)","delimiter":"optional: comma, semicolon, tab, or pipe"}},"response":["valid_csv","rows","columns","delimiter","blank_rows","duplicate_rows","trimmed_cells","row_width_mismatches","empty_header_columns","duplicate_header_groups"],"privacy":"The API processes one request in memory. It does not intentionally persist or log request bodies, and its report never returns cell contents. Do not send sensitive data.","limits":["CSV parsing and structure checks only; not business validation or data recovery.","Maximum CSV size is 256 KiB.","Payments are per request; no subscription or API key."]}