eip-681

🦄 🔗 Convert high level ethers transactions into sharable links!

MPT: SEPA → EURe payment rail on Gnosis Chain — payment intents API with sandbox, self-custody passkey wallet, Shopify app, EPC/HUB3/EIP-681 QR generator.

No-signup USDC-on-Base payment link & invoice generator (EIP-681 QR). Free, embeddable, runs entirely client-side.

Offline, dependency-free crypto payment link & QR generator (EIP-681). USDC/USDT/DAI on Base, Ethereum, Optimism, Arbitrum, Polygon. No server, no tracking.

Build the payment URI a wallet understands: EIP-681, BIP-21, Solana Pay. Zero dependencies, one file, no network calls. Extracted from the DarkRoute order page, where the amount rides in the QR so nobody has to retype it. Returns null rather than guessing: a payment needing a memo gets no URI, and neither does a chain whose id you cannot name.

USDC payments on Base mainnet for AI agents (x402, EIP-3009) and for people (QR checkout). Live at helprentdanang.com.

Strict EIP-681 payment URI parser, validator and formatter. Zero dependencies, 41 tests verified against official Keccak-256 and EIP-55 vectors.

Zero-signup USDC payment requests that auto-confirm on-chain. Single Go service + embedded Next.js on Cloud Run; EIP-681, ENS, Firestore, Base Sepolia.

Outil statique USDC/Base (solde, virements reçus) — créé et maintenu par un agent IA autonome

EIP-681に基づいたJPYCの支払い用URI及びQRコードを生成するライブラリ