Wifix402 is pay-per-use internet — you connect, you pay in USDC for exactly what you use, and you disconnect. No subscription, no card on file, no account. Just wallet in, internet on.
ITS WORTH WATCHING 5MINS OF THE DEMO. TRUST ME.
Wifix402
Pay-per-use internet access, settled in USDC on Base — no subscriptions, no card on file, no checkout. Connect your wallet, get online, pay only for what you use.
Public WiFi is broken in three ways.
For users — you either pay a flat subscription for access you don't fully use, hand over card details to a portal you've never heard of, or get locked into venue-specific voucher systems that expire whether you use them or not. There is no way to pay for exactly 12 minutes of internet at an airport or exactly 2 hours at a café. Granular, trustless, metered access doesn't exist.
For hotspot operators — collecting payments means integrating a payment processor, managing subscriptions, handling chargebacks, and paying processing fees. The infrastructure cost to monetize a small hotspot is disproportionate to what it earns. Most don't bother.
For the broader web3 ecosystem — there is no working example of programmable money meeting programmable access. Crypto payments exist, but they require gas, wallets with ETH, and manual transaction signing at each step. That's not a user experience anyone tolerates.
Wifix402 makes internet access work like a metered utility — you pay in USDC for exactly the seconds you were online, settled on-chain, with no ETH required from the user.
The core insight is that three emerging standards — EIP-7715 (execution permissions), EIP-7702 (EOA smart account upgrade), and ERC-7710 (delegation redemption) — can be composed together to build a payment channel for internet access that is trustless, gasless from the user's side, and metered to the second.
Here's what that looks like in practice:
User signs once. MetaMask issues a scoped USDC spending permission with a hard cap and time limit. No raw approval. No private key exposure. At the same moment, the EOA is upgraded to a smart account via EIP-7702 — no deployment, no ETH, stateless.
Server gates access via HTTP 402. The hotspot endpoint responds with a standard 402 Payment Required and a PAYMENT-REQUIRED header. The client attaches the signed delegation as PAYMENT-SIGNATURE and retries. No checkout, no redirect — the credential is the delegation itself.
1Shot settles on-chain. When the session ends, the server calculates exact usage (seconds × rate) and submits it to the 1Shot Permissionless Relayer. 1Shot calls DelegationManager.redeemDelegations() on Base Mainnet, transfers the precise USDC amount, and pays its own gas — the user needs zero ETH at any point.
The user is never charged more than they used. The operator receives USDC directly. Everything is verifiable on-chain.
What We're Building
Wifix402 is the infrastructure layer for programmable internet access:
A metered access protocol — sessions tracked per second, charged for actual usage, never the full cap
A gasless payment channel — USDC on Base, settled via 1Shot, no ETH dependency
An open hotspot standard — any operator can deploy a Wifix402-compatible hotspot; the payment logic is protocol-level, not vendor-specific
A composable primitive — the delegation + 402 + relay pattern can extend to any access-gated service beyond WiFi
Protocol Stack
User Wallet (MetaMask)
│
│ EIP-7715 — wallet_requestExecutionPermissions
│ Signs a scoped USDC spending delegation (max cap, time-limited)
│
▼
Smart Account Layer
│
│ EIP-7702 — eth_signAuthorization
│ EOA is upgraded to EIP7702StatelessDeleGator smart account
│ Implementation: 0x63c0c19a282a1B52b07dD5a65b58948A07DAE32B (Base Mainnet)
│
▼
Wifix402 Server
│
│ x402 Protocol — HTTP 402 Payment Required
│ /api/topup/start responds 402 with PAYMENT-REQUIRED header
│ Client attaches delegation as PAYMENT-SIGNATURE and retries
│
▼
1Shot Permissionless Relayer
│
│ ERC-7710 — redeemDelegations()
│ Relayer bundles: 7702 authorization + delegation redemption + USDC transfers
│ Gas paid by relayer in USDC — user needs zero ETH
│
▼
Base Mainnet (Chain 8453)
Key Standards
MetaMask's wallet_requestExecutionPermissions issues a scoped ERC-20 delegation. The user approves a maximum USDC cap and a time window. No raw transfer approval, no private key exposure. Implemented via @metamask/smart-accounts-kit.
Before the delegation is redeemed, the user signs a 7702 authorization pointing their EOA to the EIP7702StatelessDeleGator implementation. This temporarily upgrades the EOA to a smart account for the duration of the transaction. The stateless design means no initialize() call is needed — the implementation infers ownership from the EOA address itself.
The server calls DelegationManager.redeemDelegations() on-chain via 1Shot. Executions are USDC transfers — one to the 1Shot fee collector, one to the hotspot wallet. The delegation enforces that only the exact charged amount (actual seconds × rate) is transferred, never the full delegated cap.
The /api/topup/start endpoint responds with HTTP 402 and a PAYMENT-REQUIRED header containing base64-encoded JSON describing the payment terms. The client attaches the signed delegation as PAYMENT-SIGNATURE and retries the request. No checkout flow, no redirect, no card details.
All on-chain execution is handled by the . The server calls relayer_send7710Transaction with the delegation context, the USDC executions, and the EIP-7702 authorization tuple. 1Shot submits the transaction to Base Mainnet and charges gas in USDC from the delegation itself — the user needs no ETH at any point.
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