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encoding.openverbs.com v1 detect
https://encoding.openverbs.com/v1/detect
answers 402
Guess the character set of a base64-encoded byte buffer: sniffs a byte-order mark, then falls back to ASCII / UTF-8 validation and a UTF-16 NUL-pattern heuristic. Returns a best-effort charset with a confidence label — a low-confidence guess is still a successful 200.
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.002
- Network
- base
- Pay to
- 0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 274 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-09-06T01:20:07.965Z (21d ago)
- Category
- other
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fencoding.openverbs.com%2Fv1%2Fdetect"