A Fireside Chat with Cat and Thariq from the Claude Code team
Claude Tag handles 65% of Anthropic's own product engineering PRs via Slack integration
“we've all gotten a chance to take a step back and delegate a lot more of the menial implementation to Claude”
In a fireside chat at AI Engineer World's Fair, Anthropic's Claude Code team revealed that Claude Tag (their Slack-based coding agent) now autonomously lands 65% of their product engineering PRs, and that the Claude Code system prompt was recently cut by 80%. They also disclosed a significant prompting best-practice shift: adding examples and negative instructions ('don't do X') now degrades results for Fable 5 and Opus 4.8, reversing prior guidance.