Wifix402

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.

The Problem

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.

Our Solution

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:

1. 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.

2. 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.

3. 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

EIP-7715 — Execution Permissions

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.

EIP-7702 — EOA Smart Account Upgrade

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.

ERC-7710 — Delegation Redemption

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.

x402 — HTTP 402 Payment Protocol

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.

1Shot Permissionless Relayer

All on-chain execution is handled by the 1Shot API. 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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