​One-day Claude Code hackathon on self-improving AI agents

​Co-hosted with HappyRobot, the AI workforce platform for the companies that keep the world running.

​The challenge: build an agent that coaches another agent

​Every team starts from the same weak sales agent running on HappyRobot. You build a Claude agent that works out why calls were lost, edits the sales agent, re-tests it, and keeps or rolls back each change on its own.

​Your score is how much more the agent sells against a hidden set of simulated buyers we run at the end. Judges also look at how safe the loop is (no regressions, every change explained) and at your demo.

​Details

​🗓 Saturday, November 28th, 2026
📍 Colón (HappyRobot office), Madrid
👥 You will be placed in teams of 3 to 4
🎟️ Very limited spots · Attendance by approval

​Who this is for

​Builders with 2 to 4 years of professional experience in software, data or ML, strong in Python or TypeScript, who have already shipped something with LLMs, APIs or agents.

​Notes

• ​Breakfast and lunch are provided.

• ​Bring a laptop and a Claude account. Each participant gets $100 in Claude API credits, set up at the start of the day.

• ​Platform access to HappyRobot is sent a few days before, so the day is spent building, not onboarding.

• ​Capacity is about 30 seats. Applications are reviewed one by one, not by team.

• ​By registering you agree to the HappyRobot platform terms for the day and to being photographed or filmed during the event.

​More details on prizes and speakers soon.

​About HappyRobot

​HappyRobot puts AI agents to work in the complex operations of large enterprises. Its platform lets companies build, deploy and manage agents that work across voice, email, documents and web, inside the systems they already use and alongside their teams. HappyRobot works with more than 150 companies, including DHL, Naturgy, Repsol and Uber. It recently closed a $150M Series C led by Prysm Capital and co-led by Eurazeo, with a16z, Base10 and Y Combinator, at a $1.2B valuation.