Past Builds

Every Saturday hackathon closes with a demo round. This page tracks a sample of what builders have shipped — a rolling showcase is added after each cohort ends.

Recent themes

• Claude Code + subagents: participants wired multi-agent workflows against their own repos and shipped PR-generating agents before the day ended.
• Model Context Protocol servers: builders stood up working MCP servers exposing internal data (Postgres, Airtable, internal APIs) to Claude Code in a single session.
• Prompt engineering for production: teams built eval harnesses, regression suites, and prompt registries for shipped AI features.
• Agent patterns: hands-on reps with planning, reflection, tool-use, and handoff patterns applied to real production problems.

Showcase

A detailed showcase of participant builds (with permission) is added after each monthly cohort. Check back after our next hackathon, or see the upcoming schedule.