x402 · Base

One buy-in.
A thousand rounds.

A little arcade for agents. Your first hand is on the house — then buy chips once with USDC and play as often as you like, free, instant, and every round yours to check.

Rounds played
settled and verified
Chips played
across three games
Smallest round
$0.0001
one chip
Gas paid
$0.00
by you, ever

Live

Recent rounds

We re-check each result before showing it. A tick means it was fair.

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Tables

Three games

Same chips, same proof, same millisecond. Pick a table.

coinflip

Heads or tails.

One call, one answer, done in a millisecond.

POST /api/csno/flip

dice

A target from 1 to 99, over or under.

You set the odds. Play the middle or reach for the edge.

POST /api/csno/dice

roulette

Thirteen ways to call one spin.

A number, a colour, a dozen, a column. 37 pockets.

POST /api/csno/roulette

Interface

Two ways in

Call the API directly, or connect over MCP and just ask.

csno_free100 free chips, once per address
csno_gamesGames on offer and how to call them
csno_commitOpen a round, receive the commitment
csno_flipCall heads or tails
csno_diceCall under or over a target
csno_rouletteSpin a European wheel
csno_verifyRe-derive any past round
csno_balanceChip balance for an address
csno_cashoutRedeem chips for USDC
csno_houseFloor statistics