Sui Overflow 2026 · DeFi & Payments · Infra & Tooling

x402-sui-stack
accept agent payments on Sui

x402 is the HTTP-native payment standard for the agent economy. This is the stack to use it on Sui: a non-custodial settlement rail, developer tooling, the standards work — and a golden-path demo that pays a real API call and verifies it on-chain. Live on Sui mainnet.

GitHub repo ↗ Facilitator repo ↗ Spec extension #2666 ↗
Is the rail live right now?

Facilitator status

Pinged live from your browser — GET /health + /supported.

servicechecking…
custody—
fees—
networks—

The x402 → Sui flow

What one paid request does. The demo prints exactly this.

1402 Payment Requiredserver answers with machine-readable terms
2Sign exact paymentthe agent signs — the facilitator never holds keys
3Settle on Suifacilitator broadcasts the payer's own signed tx
4Recompute on-chainnet credit to payTo must equal the price
Don't trust us — recompute a real mainnet settlement

Verify the settlement

A real $0.01 USDC payment settled on Sui mainnet on 2026-06-19. Recompute the on-chain net credit to the recipient, live, from a public Sui fullnode — the same check the conformance MCP makes.

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