Hacktoberfest 2026: Software Factories, Mastra, and the Future of Agents with Alex Booker from Mastra

From Spotify’s Honk to Stripe’s Minions, agents are shipping real software, and Mastra Factory is already writing 25–35% of Mastra’s pull requests and closing 50–60% of its issues. Alex Booker from Mastra shows how they built their software factory, what they learned along the way, and how they open-sourced it so you can build your own.