1Choose a bounded product
Liquidations, margin stress, carry and current news.
https://omniterminal.app/api/x402/v1/market-risk/BTC?scope=current&event_window_minutes=60&limit=5 HUMAN X402 CHECKOUT · BASE MAINNET
Inspect. Sign once. See the paid result.
This is a real-value demo. It first reads Omni's public 402 challenge without spending. You then approve one exact EIP-3009 USDC authorization in Rabby or MetaMask. The facilitator submits it; Omni never receives your private key or an open-ended token approval.
2Verify the exact terms
Inspect the challenge to pin its URL, price, network, asset and receiver.
3Connect and authorize once
The payment button switches the wallet to Base and asks for one typed-data signature. It will not request a blanket USDC allowance. The browser demo refuses prices above 0.010 USDC or changed receiver/asset terms.