The Algorand Foundation launched the Global x402 Challenge, a five-month competition for developers building x402-powered, pay-per-request API services on Algorand mainnet.
The announcement follows the Algorand Builders Berlin: Agentic Commerce x402 Hackathon on June 6-7, where more than 100 builders gathered in Berlin for a 36-hour build sprint. Winning builds ranged from an agentic trust layer for regulated finance to a peer-to-peer energy market where an EV agent settles solar power purchases in real time, with no checkout step required.
x402 is an open protocol that embeds payment logic directly into HTTP requests. Originally developed by Coinbase, it enables AI agents and services to transact per call without API keys or billing infrastructure. Algorand’s instant finality and low transaction fees make it particularly well-suited as the settlement layer for high-frequency agent payments at scale.
To enter the Global x402 Challenge, developers must deploy a paid x402 endpoint on Algorand Mainnet. Usage is tracked automatically via the GoPlausible facilitator on a public leaderboard. The top 50 qualify for 10 finalist spots, who will present live (in-person or virtually) at Devcon 8 India. The top five finalists share $100,000 USD, with an additional 500,000 ALGO split across the top 20 endpoints on the leaderboard. Full eligibility requirements, prize terms, and conditions are set out in the Official Rules; the Challenge is void where prohibited and is not open to residents of sanctioned or otherwise restricted jurisdictions.
The challenge opens mid-July and runs through early October, with winners announced at Devcon 8 India. Learn more here.