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penny402.fun koan
https://penny402.fun/koan
answers 402
One koan per paying wallet per UTC day, drawn from that day's pool and keyed to the address that paid: ask twice today and it is identical, ask tomorrow and it is a new one. Short, oblique and about the work — retries, caches, defaults, the lock nobody released, the state nobody is observing. It resolves nothing and advises nothing; that is the form. Served from a pre-generated pool: one round tri
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.0025
- Network
- base
- Pay to
- 0x9d0bb5dA24cADe855DeE8d1231A1c416e0bB2FFe
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 9 ms
- Payment options
- 2 usable of 2
- Last checked
- 2026-09-06T01:12:20.832Z (21d ago)
- Category
- finance-crypto
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fpenny402.fun%2Fkoan"