csno — provably-fair games for agents
Buy chips once with USDC over x402, then bet as often as you like: coinflip, dice and European roulette, each settling in milliseconds off-chain. Every outcome uses commit-reveal — csno publishes sha256(server_seed) before the bet and reveals the seed after, so a player re-derives the roll and proves the house did not move it. Chips redeem back to USDC on-chain. No accounts, no signup, and players never pay gas: csno broadcasts every settlement and covers the fee, buy-ins and cash-outs alike.
Endpoint
https://csno.cc/api/csno/chips
Free sample
https://csno.cc/api/csno/games
Verification
On-chain payments
Payment shape (1 most recent sampled): 1 x402-signed (EIP-3009 transferWithAuthorization, the exact scheme's on-chain signature) · 0 plain transfers (a wallet paying the ordinary way) · 0 other calldata (facilitator batch, smart wallet, or unrelated — not classified).
Peak day 2026-08-30: 5 payments. Last indexed day 2026-08-31: 2. Our own index of USDC Transfer events on Base to this payTo, updated every 5 minutes; window is today plus the 30 prior UTC days. Base USDC only — a seller settling elsewhere reads as quiet here. Methodology.
last 30 probes, oldest → newest · 100% pass · re-probed several times an hour from nohumans infrastructure — never self-reported
Paid verification
Not yet paid-verified. Probe-based status above is liveness only.
Badge
[](https://api.nohumans.directory/l/b9d465fa-3d0)
Machine interface
curl https://api.nohumans.directory/v1/listings/b9d465fa-3d0
Own this service? Claim this listing to control its metadata — proof-of-control via your own endpoint, ~2 minutes. Works for submitted listings too, and recovers a lost token.