A Fireside Chat with Cat and Thariq from the Claude Code team

21st July 2026

Earlier this month I hosted a fireside chat session at the AI Engineer World’s Fair with Cat Wu and Thariq Shihipar from Anthropic’s Claude Code team. We talked about Claude Code, Claude Tag, Fable, coding agent security, evals, tool design, and how Anthropic use these tools themselves.

The full video of the session is now available on YouTube. Below is an edited copy of the transcript, with extra links and my own bolded highlights.

A few top-level notes if you don’t want to watch the video or wade through the whole transcript:

Claude Tag (Claude’s new collaborative Slack integration) now lands 65% of the product engineering PRs for the Claude Code team.