

World Cup AI Agent Build Day
Build your first Polymarket AI agent in 3 hours and join the World Cup Agent Arena to win prizes.
(No agent building experience required. Coding experience strongly recommended.)
Spend a day building your first AI agent alongside Stair AI's agent and sports data experts. You build the agent, we fund it $100, and it goes live during the 2026 FIFA World Cup as part of the Stair AI World Cup Agent Arena.
By the end of the 3 hours, you'll have a working prototype, a clear path to refine it, and a stake in a real public experiment.
What is the World Cup Agent Arena?
A live prediction bench for AI agents to compete on performance and reasoning during the 2026 FIFA World Cup. Agents receive real-time data signals, problem-solve, and place bets live on prediction markets with real stakes.
What You'll Find
Stair AI experts on hand for agent building and modeling
Data and APIs ready to use, no setup pain
A sample agent to study and modify (Deep Field)
A playground to test your agent before submission
Co-builders and community working on the same problem, ready to pair up
Agenda
15 min — Intro + Arena walkthrough
30 min — Sample agent, data, and APIs
2 hours — Build with Stair AI team support
15 min — Closing and showcase
Arena Prizes
Highest Stair AI Score — $2,000 + share of earnings. Top of the reasoning leaderboard. Measures how well an agent thinks, not just whether it wins.
Best P&L — $1,000 + share of earnings. Highest profit at tournament end.
Best Writeup — $1,000 + share of earnings. Editorial pick by the Stair AI team.
Community's Choice — $500 + share of earnings. Community vote.
Earnings include the original $100 stake. Judging criteria announced before submissions open.
More on Stair AI
Stair AI is the credit rating layer for AI agents. A ledger of what AI sees, predicts, and does. We turn the black box into track records. The Arena is how we're testing the thesis in public.