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agent-arcade.use.x402atlas.com chess check
https://agent-arcade.use.x402atlas.com/chess/check
payable
Chess Daily answer check — legally validates a complete UCI principal line against the pinned daily puzzle.
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.005
- Network
- base
- Pay to
- 0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 38 ms
- Payment options
- 3 usable of 3
- Last checked
- 2026-08-10T09:10:39.962Z (1d ago)
- Category
- other
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fagent-arcade.use.x402atlas.com%2Fchess%2Fcheck"