Mitchell Hashimoto co-founded HashiCorp, built some of the most impressive DevOps tools like Vagrant and Terraform, sold the company to IBM — and then built a terminal. Ghostty is now where a huge chunk of agentic coding actually happens. Mitchell was an AI skeptic. We walk through his six-step adoption framework and the workflows he uses day to day — warm-start research, Hail Mary prompts across twenty GitHub issues, and knowing when to let the agent slam dunk it.

The hard part of AI coding isn’t generating code — it’s controlling quality, safety, and drift. Drawing from OpenAI’s Codex case study, Mitchell Hashimoto’s post on AI workflows, Stripe’s Minions project, and real-world experience, Kaushik and Iury break down harness engineering: the five pillars for shaping an agent’s environment, and what it looks like when teams build custom harnesses from scratch.

Full shownotes at fragmentedpodcast.com.