a builder's codex
codex · operators · Cat Wu

Cat Wu

Bio

Cat Wu. Head of product for Claude Code and Co-work at Anthropic. Runs one of the fastest-shipping product orgs in the AI industry, timelines collapsed from quarter-long to week-long with the help of an "evergreen launch room" cadence and a heavy reliance on engineers shipping end-to-end. Vocal advocate for replacing PRDs with metrics readouts plus a written team-principles doc.

Operating themes

Cards

Sources captured

Insights · 13

Tier B · ai-native · engineering
An automation that works 95% of the time is not an automation
Tier B · ai-native · engineering
Advisor-tool replaces ensemble-of-3 stability hacks at near-Sonnet rates
Tier B · product · agentic-coding
Production evals must measure UX friction behaviors that damage retention, not just task accuracy
Tier B · product · ai-native
Build products at the edge of what does not yet work
Tier B · agentic-coding · ai-native
Proactive multi-agent architecture enables Claude Tag to land 65 percent of Anthropic product engineering PRs
Tier B · engineering · ai-native
Automated code review earns the right to replace human review one file category at a time, based on measured 100-percent issue coverage in that category
Tier B · agentic-coding · ai-native
Proxy injection of credentials at request time lets agents make authenticated calls without ever holding sensitive tokens
Tier B · product · agentic-coding
Employee cohort retention data gates public feature launches at Anthropic
Tier B · product · leadership
Hire engineers with product taste rather than adding more PMs
Tier A · product · leadership
Replace PRDs with weekly metrics readouts plus a written team-principles doc
Tier A · product · ai-native
When a new model lands, re-read the system prompt and remove crutches
Tier A · product · ai-native
Brand work as "research preview" to compress timelines from quarters to weeks
Tier B · product · ai-native
Taste is the scarce skill in an AI-native team
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