Addy Osmani
An engineering lead at Google and thought leader in AI engineering, known for articulating the view that the engineer's role is evolving from "someone who writes code" to "someone accountable for outcomes."
Timeline (last 90 days)
Addy Osmani's Web Quality Skills works with the Chrome DevTools MCP server to collect runtime traces, LCP, INP, and CLS, strictly distinguishes measured runtime failures from source-code assumptions, and also validates browsing signals such as structured JSON-LD, LLMs.txt, and WebMCP endpoints.
In Addy Osmani's agent skills, each skill embeds an "anti-rationalization table" that lists the excuses models commonly use to skip steps along with hard rebuttals, to stop the Agent from taking shortcuts.
According to a video, Addy Osmani's agent skills repository has gained over 100,000 stars and packages 25 independent skills mapped to 9 slash commands, covering the full lifecycle of spec, plan, build, test, review, simplify, ship, and more.
The three core members of Anthropic's Claude Code team are Addy Osmani, Morgan Westlee Lunt, and Qing Wang.
The build auto mode in Addy's skill pack allows users to approve a plan once and then have tasks run automatically, but each task still follows test-driven development with individual commits, stopping upon failure.
Each of Addy's skills comes with a rationalization-prevention table that preemptively lists the excuses an agent might use to skip a step, along with counter-arguments.
Addy's skill pack is the only one among the three that covers the complete SDLC, and is described as being installable into approximately 70 different agents.
Addy's skill pack contains 25 skills, plus four reviewer personas: senior engineer, test engineer, security auditor, and web performance auditor.
Addy Osmani was formerly a principal engineer at Google and has since joined Anthropic.
Addy Osmani open-sourced his complete set of agent skills, which garnered 100,000 stars shortly after launch, making it one of the most popular AI repositories on GitHub.
5 more timeline events
All Facts (14)
According to a video, Addy Osmani's agent skills repository has gained over 100,000 stars and packages 25 independent skills mapped to 9 slash commands, covering the full lifecycle of spec, plan, build, test, review, simplify, ship, and more.
50%UnverifiedAddy Osmani's Web Quality Skills works with the Chrome DevTools MCP server to collect runtime traces, LCP, INP, and CLS, strictly distinguishes measured runtime failures from source-code assumptions, and also validates browsing signals such as structured JSON-LD, LLMs.txt, and WebMCP endpoints.
50%UnverifiedIn Addy Osmani's agent skills, each skill embeds an "anti-rationalization table" that lists the excuses models commonly use to skip steps along with hard rebuttals, to stop the Agent from taking shortcuts.
50%UnverifiedThe three core members of Anthropic's Claude Code team are Addy Osmani, Morgan Westlee Lunt, and Qing Wang.
50%UnverifiedEach of Addy's skills comes with a rationalization-prevention table that preemptively lists the excuses an agent might use to skip a step, along with counter-arguments.
50%UnverifiedAddy's skill pack is the only one among the three that covers the complete SDLC, and is described as being installable into approximately 70 different agents.
50%UnverifiedThe build auto mode in Addy's skill pack allows users to approve a plan once and then have tasks run automatically, but each task still follows test-driven development with individual commits, stopping upon failure.
50%UnverifiedAddy Osmani was formerly a principal engineer at Google and has since joined Anthropic.
50%UnverifiedAddy Osmani's methodology is a software engineering lifecycle consisting of six phases—Design, Plan, Build, Verify, Review, and Ship—each corresponding to a slash command.
50%UnverifiedAddy's skill pack contains 25 skills, plus four reviewer personas: senior engineer, test engineer, security auditor, and web performance auditor.
50%UnverifiedAgent Skills was developed by Addy Osmani and breaks development into six phases—define, plan, build, validate, review, and release—and is compatible with Claude Code, Cursor, Gemini CLI, Codex, and other agents that accept Markdown.
50%UnverifiedAddy Osmani refers to humans being responsible for delivery as 'owning the outer loop'
50%UnverifiedFormer Chrome team member Addy Osmani has joined Anthropic and authored a usage guide for Opus 5.5.
50%Unverified谷歌工程师、前端专家 Addy Osmani 开源了 agent-skills 项目
50%