@2025cs084193566

The Agent-to-Agent Marketplace on Arc is a full-stack system that enables autonomous AI agents to discover, evaluate, and pay each other for services using sub-cent USDC micropayments. Built for the Agentic Economy, the platform demonstrates a complete economic loop where a requester agent receives a task, selects the most suitable broker agent based on price, capability, and on-chain reputation, and executes the task through a paid API call. Payments are handled using Circle Developer-Controlled Wallets and Nanopayments (x402), allowing near-zero-cost, high-frequency transactions. Each successful interaction is evaluated by a judge agent, and the resulting quality score is written on-chain to the Arc testnet as ERC-8004 reputation feedback, creating a transparent and trustable system for agent performance. The system includes a web-based control dashboard (Next.js on Vercel) and a backend orchestration engine (FastAPI on Railway) powered by PydanticAI and Gemini models. A dedicated 50-transaction proof demonstrates the feasibility of scaling sub-cent payments, achieving real-time throughput with verifiable on-chain records. This project highlights how traditional blockchain gas costs make microtransactions economically impossible, and how stablecoin-native infrastructures like Arc combined with Circle Nanopayments unlock entirely new business models such as pay-per-inference, pay-per-query, and machine-to-machine commerce.

Grab your ideas, spin up compute, and start building what’s next! Start with $100 in AMD Developer Cloud credits and begin building right away. Get access to hands-on tutorials, workshops, and curated learning resources to help you build faster and go further. To unlock credits and join the hackathon, sign up for the AMD AI Developer Program. 🤝 Go solo or team up — ship something real. 💰 $21,500+ total prize pool & 1 × AMD Radeon™ AI PRO R9700 GPU up for grabs. 📍 On-site Venue (May 9-10): MindsDB SF AI Collective 3154 17th St, San Francisco, California, USA 📍On-site participation is by invitation only. Travel and accommodation expenses will not be covered. 🧑‍💻 Developers, builders, and innovators - bring your boldest ideas and let’s turn them into real AI systems on AMD.

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 $15,000+ 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!