On June 6–7, more than 110 builders came together at 42 Berlin for the Agentic Commerce x402 Hackathon: a 36-hour challenge focused on building real payment experiences for AI agents. With 373 registrations and a $20,000 USDC prize pool, teams spent two days turning x402 concepts into working applications on Algorand.
What teams built
By the end of the hackathon, 42 projects had been submitted, offering a glimpse into what agentic payments could look like in the real world.
Many teams focused on trust: a core challenge for any economy where agents pay other agents. Before an agent sends money, it needs to know whether the other side is reliable, whether the service will be delivered, and whether there is a record if something goes wrong. Teams explored this through reputation systems, validation layers, trust routers, and audit trails.
Payments using EURD were another area where teams experimented. Builders applied x402 to merchant checkout, freelance payments, and even physical mail. Other teams pushed into prediction markets and deeper payment infrastructure, including agent wallets with spending limits, batched settlement, payment proxies, and cross-chain routing.
Some teams took x402 beyond the screen entirely, applying it to real-world flows like solar energy paid per kilowatt-hour and parking paid directly from the car. In many of these projects, the most important part was what users did not see: no wallet pop-up, no manual checkout, no extra payment step, just payment embedded into the action itself.
Winning teams
This year, the hackathon recognized both new and existing projects. Some teams started from scratch during the 36-hour event, while others brought existing Web2 or Web3 products and extended them by integrating x402, adding Algorand, or building new functionalities on top of their current work.
1. Agentic Commerce track
Projects where AI agents transact over x402 on Algorand: agents that pay for services, pay-per-use APIs, and agent-driven marketplaces.
Existing projects
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1st place - Erster: Pay-per-evaluation trust check for finance agents.
Prize: $3,000 USDC
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2nd place - Lockpay: Milestone escrow that releases payment the moment a creator delivers.
Prize: $2,000 USDC
New projects
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1st place - Juicebag Mail: Juicebag Mail lets an agent send and receive physical mail, paid per letter.
Prize: $2,500 USDC
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2nd place - Volt402: EV agent buying a neighbor's solar power in real time.
Prize: $2,000 USDC
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3rd place - SPM: Funding human security review, one audited download at a time.
Prize: $1,500 USDC
2. Infrastructure track
The rails beneath x402: payment routing, settlement layers, euro wallets and SDKs, and the components other builders depend on.
Existing projects
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1st place - Liminal x402: Routing an agent to the provider it can actually trust.
Prize: $1,500 USDC
New projects
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1st place - AlgoEUPay: Euro checkout, from QR scan to instant IBAN settlement.
Prize: $2,500 USDC
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2nd place - AgentTab: Batching agent micropayments into a single on-chain settlement.
Prize: $2,000 USDC
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3rd place - Print402: Turning a paid x402 call into a real 3D print job.
Prize: $1,000 USDC
Bonus Prizes
We also had three bonus prizes, each rewarding a specific implementation using partner technology: Quantoz for EURD payments, Alpha Arcade for prediction markets, and Folks Finance for DeFi integrations.
Quantoz
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SingIt: Spending by voice command, with a physical confirmation before any money moves.
Prize: $500 USDC
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Panelet: Open-standard rails for autonomous vehicles that discover, negotiate, and pay on their own.
Prize: $500 USDC
Alpha Arcade
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VibeQuant: Turning a plain-English hunch into an approved trade.
Prize: $500 USDC
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AlphaOracle: Per-query market forecasts from a swarm of frontier AI models, sold to other agents.
Prize: $500 USDC
Folks Finance
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Basma's AgentID: An on-chain reputation score that updates with every payment.
Prize: $500 USDC
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Erster: Pay-per-evaluation trust check for finance agents.
Prize: $500 USDC
Special thanks
Thank you to 42 Berlin for hosting, to our bonus prize sponsors Quantoz, Alpha Arcade, and Folks Finance for their mentorship and support, and to GoPlausible for their hands-on support and continued work bringing x402 to Algorand.
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