Avalanche Hack2Build 2025: $25,000 in Rewards

Avalanche announced a new edition of Hack2Build, an event that brings together developers, designers, and entrepreneurs to build payment solutions that integrate artificial intelligence and blockchain technology. Named “Payments x402”, the hackathon will take place fully online between late November and December 12, 2025, offering a total prize pool of 25,000 USD for the highest-rated projects.

An event to explore the future of Web3 payments

The main objective of this edition is to promote proposals that combine the x402 and EIP/​ERC-8004 protocols within the Avalanche ecosystem. The organization describes this hackathon as a 2.5-week space to build applications that enable new payment dynamics and AI-driven interactions in Web3 environments.

Both the Avalanche Builder Hub and communications from Avalanche Developers on X present the event as an open initiative for participants from any country, thanks to its fully virtual format.

What participants are expected to build

Organizers establish four main criteria that guide the evaluation of submitted projects:

• Innovation, focused on new approaches to digital payments and AI-driven automation.
• Technical quality, covering the project’s architecture, security, and scalability.
• User experience, prioritizing accessible interfaces and clear usage flows.
• Practical application, emphasizing solutions that address real-world needs or improve existing processes.

In addition, participants are invited to work specifically with x402, an open protocol that uses HTTP status code 402 to enable payments without traditional registration or signature steps, and with the EIP/​ERC-8004 standard, referenced both on the official website and in Avalanche Developers publications.

Event dates and format

Official information indicates that the hackathon begins on November 27, 2025, although social media channels also mention November 28 as the opening date. The closing date is confirmed for December 12, 2025.

Throughout the event, teams work independently and receive continuous support from technical and business mentors. Participants also have access to recorded workshops, support materials, and Builder Hub resources, including:

• Project overview sheet, required for the Stage 2 submission.
• Recordings of previous workshops.
• Developer tools such as L1 Launcher and ICM Deployer.
• Presentation templates for structuring their pitch, although custom formats are allowed.

The final submission must include a GitHub repository and all required documentation.

Prizes and additional opportunities

The main prize pool totals 25,000 USD, which will be distributed among the highest-rated teams. In addition to financial rewards, selected projects may be considered for an interview with the InfraBuidl(AI) Grant committee, as well as receive specialized mentorships and additional recognitions provided by event partners.

Who can participate

The event is aimed at developers, product designers, entrepreneurs, and teams interested in exploring AI-enabled blockchain use cases. Its online format allows anyone to participate regardless of location.

Benefits include access to experts from the Avalanche ecosystem, opportunities to present solutions to the community, and the possibility of continuing project development with additional support if selected.

Key considerations

Hack2Build: Payments x402 offers a limited-time but highly structured environment for building payment solutions that combine AI, blockchain, and Avalanche ecosystem tools. With training resources, specialized mentorship, and a prize pool dedicated to the most solid proposals, the event aims to support initiatives that improve clarity, security, and efficiency in Web3 payment mechanisms.

Staying updated through the Builder Hub will help participants prepare a complete proposal aligned with the evaluation criteria.