httppayai

x402-catalog-history.ai-business-surface.workers.dev

Base64 encode or decode text in one GET, with URL-safe output and the byte counts. Returns result, action, bytes, result_chars and sha256. Decoding accepts standard and URL-safe alphabets with or without padding and returns UTF-8 text only; invalid Base64 or non-UTF-8 bytes are 400 before payment. curl: GET /base64?data=hello&action=encode . Response: {"result":"aGVsbG8=","bytes":5,...}. data at most 16384 characters. No encryption, no binary delivery, no storage. No keys, no account, one GET, one delivery — 0.001 USDC. A purchase is two calls by design: this first call returns 402 with the price and the payment terms, and you then repeat the same request with the PAYMENT-SIGNATURE header to receive the 200 delivery.