Semih Civelek@himess767

ArcPay is a comprehensive TypeScript SDK that makes USDC payments simple on Arc Network. Zero gas fees, 150+ APIs, 3 lines of code to integrate. THE PROBLEM Developers building payment features face: - Complex smart contract integrations - Users needing native tokens for gas - Fragmented tooling and poor documentation - No privacy or streaming options OUR SOLUTION ArcPay provides everything in one SDK: Core Payments - Send USDC instantly with sub-second finality. Users pay zero gas fees via Circle Gas Station. Payment Streaming - Real-time money flow for salaries and subscriptions. Recipients claim funds per-second. Escrow System - Trustless trades with milestone releases and arbiter dispute resolution. Privacy Payments - Stealth addresses (EIP-5564) for confidential transfers. AI Agent Payments - Autonomous agents with budget controls and spending limits. x402 Micropayments - Pay-per-use API monetization protocol. Voice Commands - Hands-free payments: "Send 10 USDC to Alice" (bonus feature powered by Gemini AI). DEVELOPER EXPERIENCE Three lines to start: const arc = await ArcPay.init({ network: 'arc-testnet' }); await arc.sendUSDC(recipient, '10.00'); Full TypeScript support, interactive playground, comprehensive docs. TECHNICAL STACK - 150+ APIs across 28 modules - Smart contracts on Arc Testnet (Chain 5042002) - Circle Wallets (ERC-4337 Smart Contract Accounts) - Circle Gas Station for sponsored transactions - Native USDC with ~0.5s finality PRODUCTION READY 105 tests passed, 18 real onchain transactions verified on Arc Block Explorer.

In this hybrid hackathon powered by Arc and Circle, developers will build the next generation of Agentic economic applications using Circle’s Nanopayments infrastructure with settlement on Arc in USDC. For the first time, high-frequency, usage-based transactions between users, APIs, and AI agents can operate without gas overhead eroding margin. Arc provides stablecoin-native settlement with predictable, dollar-denominated USDC fees and deterministic, sub-second finality — enabling real-time coordination and economically viable per-action pricing at scale. 📅 April 20 – 26, 2026 • Apr 20 – 25 (Online): Submit projects by Apr 25. • Apr 25 (On-site Build – SF, CA): Teams refine projects. • Apr 26 (On-site Demos & Awards – SF, CA): Live pitches & winners announced. Get guidance from Arc and Circle experts through on-site support. 📍 On-site Venue (April 25-26): MindsDB SF AI Collective 3154 17th St, San Francisco, California, USA 🤝 Go solo or team up, it's your flow. 🏆 Compete for a $10,000 Prize Pool. 📍 Please note: If approved for the on-site experience, you’ll also have the opportunity to showcase your project live. Travel and accommodation will not be covered. 🧑🏻‍💻 Secure your spot now – sign up before the Kick-Off Stream!

In this hybrid hackathon powered by Arc, developers will build the next generation of agentic commerce systems using Arc with USDC. Explore a world where AI agents and web services can pay for APIs, data, compute, and content in dynamic, usage-based ways, while Arc provides stablecoin-native settlement with predictable USDC fees and deterministic, sub-second finality. This hackathon is supported by Google & Google DeepMind, with a dedicated challenge and $40,000 in Google Cloud Platform (GCP) credits awarded for the best use of Gemini models and Google AI Studio. 📅 January 9 – 24, 2026 • Jan 9 – 23 (Online Phase) – Collaborate and build online with developers and AI innovators from around the world. All projects must be submitted by the end of the online phase on January 23rd. • Jan 23 (On‑site Build Day – San Francisco, CA) – Selected participants will be invited to an exclusive in‑person session to refine their projects and connect directly with mentors. • Jan 24 (On‑site Demos & Awards – San Francisco, CA) – Live pitching sessions to a panel of judges and ecosystem partners, followed by the official winner announcement. Get guidance from Arc and Circle experts through on-site support. 📍 On-site Venue (Jan 23–24): MindsDB SF AI Collective 3154 17th St, San Francisco, California, USA 🤝 Go solo or team up, it's your flow. 🏆Compete for $50,000 in USDC & GCP Credits. 📍 On-site participation is by invitation only. Travel and accommodation expenses will not be covered. 🧑🏻‍💻 Secure your spot now - sign up before the Kick-Off Stream!