Access0x1

Access0x1 is a single, zero-custody payments router plus a full on-chain commerce layer — subscriptions, bookings, invoices and gift cards — with an SDK, a one-tag embed and a hosted white-label dashboard for non-coders. Every payment is priced in USD by a Chainlink feed inside the settlement transaction and settles in USDC; on Arc, USDC is the native gas token, so checkout needs no separate gas coin. The router never holds the money: an exact, fuzz-proven fee split (net + fee == gross) settles atomically, and an on-chain invariant proves a refund can never be blocked. A business signs in, types a name + logo, and is live with a branded checkout in under two minutes — no contract code. It's agent-native: an AI agent gets a budget-capped, revocable on-chain mandate (ERC-7702/6492) and pays autonomously, with verified-human checkout (World ID) or private checkout (Unlink) as a per-merchant choice. MIT and open source. LIVE + verified on Base Sepolia (Router 0xec89c9eE28AF42Ae2b917BB0bAe245EAad6E8E57), built with Dynamic, Circle/Arc, Chainlink, World ID, Unlink and ENS. 846 contract tests, fuzz-proven zero custody.

The contracts are Foundry / Solidity 0.8.28. A Router money-spine reads a Chainlink Data Feed inside the settlement tx to price in USD, settles USDC and splits fees with zero custody (CEI + nonReentrant, OpenZeppelin 5.x). It composes our own minimal audited ERC implementations — PaymentLanes (ERC-6909 receipts) and SessionGrant (ERC-7702 + ERC-6492 agent mandates) — plus a commerce quartet (Subscriptions, Bookings, Invoices, GiftCards) and an ERC-721 NFT-commerce escrow. The frontend is Next.js + viem, with a published @access0x1/react SDK, a one-tag embed and an npx create-access0x1 scaffolder. Partner tech is wired as env-gated, fail-soft seams: Chainlink Data Feeds (USD pricing in-tx) + a CRE notified-settlement consumer (simulated on-chain write; live DON deploy is Early-Access); Circle/Arc for native-USDC-gas settlement; Dynamic for invisible email wallets; World ID for verified-human checkout (shipped); Unlink for confidential payouts; ENS for human-readable merchant identity; and x402/EIP-3009 for agent micropayments. Tested the Cyfrin way — 846 forge tests, run on a live anvil node; env-driven HelperConfig so one command deploys the whole stack to any chain. Deployed + verified live on Base Sepolia.