← All endpoints
similarity.openverbs.com v1 hamming
https://similarity.openverbs.com/v1/hamming
answers 402
Hamming distance — the number of positions at which two EQUAL-LENGTH strings differ — plus a normalized similarity. Strings of unequal length are a clean 400.
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.004
- Network
- base
- Pay to
- 0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 152 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-09-06T01:22:11.685Z (23d ago)
- Category
- other
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fsimilarity.openverbs.com%2Fv1%2Fhamming"