> ## Content Index > Fetch the complete content index at: https://www.notatechguy.com/llms.txt > Use this file to discover other available public pages before exploring further. # Addy Osmani's agent-skills hits 90,000 GitHub stars - URL: https://www.notatechguy.com/addy-osmani-s-agent-skills-hits-90-000-github-stars/ - Published: 2026-08-30T15:48:38.000Z - Updated: 2026-08-30T15:48:38.000Z - Description: AI coding agent skills repo by Addy Osmani hit 90,797 GitHub stars, packaging 25 slash commands that enforce senior-engineer workflows across 70+ agents. - Author: Marcello Babbili - Tags: Technology & AI, Anthropic The GitHub repository addyosmani/agent-skills sits at 90,797 stars after adding 196 in a single day on GitHub's daily trending list [S¹](https://github.com/addyosmani/agent-skills?ref=notatechguy.com). It packages 25 skills and nine slash commands designed to make AI coding agents follow the same workflows a senior engineer would: write a spec, plan the build, test the result, review before merging [S¹](https://github.com/addyosmani/agent-skills?ref=notatechguy.com). Whether prompt-level instructions can enforce that discipline on agents that will install malicious packages from a README edit remains unproven. **My read:** This is the most structured attempt I've seen to bottle senior-engineer judgement into reusable commands for AI coding agents. The nine slash commands map cleanly to a real development lifecycle, and the context-triggered skill activation is a smart idea: if an agent detects it is building a UI, it loads frontend-ui-engineering automatically [S¹](https://github.com/addyosmani/agent-skills?ref=notatechguy.com). What I don't buy yet is the '70+ agents' claim [S¹](https://github.com/addyosmani/agent-skills?ref=notatechguy.com), which reads like marketing copy until someone verifies the integration list. And the portability gap in issue #361, where single-skill installs miss shared reference files [S¹](https://github.com/addyosmani/agent-skills?ref=notatechguy.com), tells me this is still early-stage tooling wearing a production label. ## Nine commands, one pipeline The slash commands map to the development lifecycle: /spec defines what to build, /plan maps the approach, /build implements incrementally, /test proves it works, /constraints sets the quality bar, /review checks before merge, /webperf audits performance, /code-simplify cleans up, and /ship sends it to production [S¹](https://github.com/addyosmani/agent-skills?ref=notatechguy.com). The README describes a /build auto mode that generates a plan and implements every task in a single approved pass, pausing on failures or risky steps [S¹](https://github.com/addyosmani/agent-skills?ref=notatechguy.com). That pause-on-failure behaviour is the detail that matters. It is the difference between an agent that charges through a build blindly and one that stops when something looks wrong. ## Skills that wake up on context The 25 skills activate automatically based on what the agent is doing. Designing an API triggers api-and-interface-design. Building UI triggers frontend-ui-engineering [S¹](https://github.com/addyosmani/agent-skills?ref=notatechguy.com). The install path is a single command: `npx skills add addyosmani/agent-skills` loads all 25 [S¹](https://github.com/addyosmani/agent-skills?ref=notatechguy.com). There is also a native Claude Code marketplace integration via `/plugin marketplace add addyosmani/agent-skills` [S¹](https://github.com/addyosmani/agent-skills?ref=notatechguy.com). The README claims the CLI works with more than 70 agents including Claude Code, Cursor, Codex, Copilot, and Cline [S¹](https://github.com/addyosmani/agent-skills?ref=notatechguy.com), though this is an unverified assertion from the project's own documentation. ## The gap in the fine print Install a single skill rather than the full set and you get only the skills/ directory, not the repo-level references/ directory that holds shared checklists [S¹](https://github.com/addyosmani/agent-skills?ref=notatechguy.com). This portability gap is tracked in issue #361 [S¹](https://github.com/addyosmani/agent-skills?ref=notatechguy.com). It means a developer who cherry-picks one skill may find it referencing checklists that are not present on their machine. The release history shows version 0.5.0 shipped in April 2026, adding a Source-Driven Development skill that grounds framework decisions in official documentation [P²](https://github.com/addyosmani/agent-skills/releases/tag/0.5.0?ref=notatechguy.com). That is a young project by version number, whatever the star count says. ## The /review gate meets the malware problem AI coding agents will install malicious packages from a simple README edit. A tool like agent-skills, which enforces a /review step before merge, sits squarely in the defense layer against that kind of attack. The /constraints command, which sets the quality bar before code is written, is the kind of gate that could stop an agent from accepting a dependency it should not. But a slash command is only as strong as the agent's willingness to obey it, and the evidence for that is still thin. ## What to do about it For a team running Claude Code or Cursor on a real codebase, the value proposition is straightforward: you get a structured set of prompts that enforce spec-then-build-then-test discipline without writing your own. A small web agency building client sites could install the full skill set, run /spec before starting a new landing page, and use /webperf before shipping to catch performance regressions the agent would otherwise skip. The practical step this week: run `npx skills add addyosmani/agent-skills` in a throwaway branch, try /build auto on a small feature, and watch whether the agent actually pauses when it hits a failure or barrels through. If it pauses, the discipline is real. If it does not, the skills are suggestions, not gates. ## What we don't know yet No third party has verified the 'production-grade' label or the '70+ agents' claim [S¹](https://github.com/addyosmani/agent-skills?ref=notatechguy.com). The star count, while large, is a platform metric that reflects trending algorithms and social sharing, not necessarily enterprise adoption. Issue #361 remains open, meaning the single-skill install path is incomplete. And we have no data on whether teams using these skills ship fewer bugs than teams without them. The next signal: watch issue #361 for a resolution that ports the references/ directory into per-skill installs, and check the repository for a 0.6.0 release that would indicate active maintenance beyond the April 0.5.0 tag [P²](https://github.com/addyosmani/agent-skills/releases/tag/0.5.0?ref=notatechguy.com). We will check both against the next release. Subscribe if you want the follow-up when we see whether 0.6.0 closes that gap. --- *Sources: [S1 — addyosmani/agent-skills: Production-grade engineering skills for AI co](https://github.com/addyosmani/agent-skills?ref=notatechguy.com) · [P2 — Agent Skills 0.5.0](https://github.com/addyosmani/agent-skills/releases/tag/0.5.0?ref=notatechguy.com) · [P3 — TemidireAdesiji/arxiv-sentinel](https://github.com/TemidireAdesiji/arxiv-sentinel?ref=notatechguy.com) · [P4 — README.md](https://github.com/addyosmani/agent-skills/blob/HEAD/README.md?ref=notatechguy.com) · [P5 — princeton-pli/RLMT](https://github.com/princeton-pli/RLMT?ref=notatechguy.com)* ## More from Not A Tech Guy - [IBM Research open-sources AI policy schema for GenAI apps](https://www.notatechguy.com/ibm-research-open-sources-ai-policy-schema-for-genai-apps/) - [TradingAgents hits 100K stars with data-leak fix in v0.3.1](https://www.notatechguy.com/tradingagents-hits-100k-stars-with-data-leak-fix-in-v0-3-1/) - [NVIDIA RTX Spark adds EA, Ubisoft games ahead of fall launch](https://www.notatechguy.com/nvidia-rtx-spark-adds-ea-ubisoft-games-ahead-of-fall-launch/) --- *Generated from an audited evidence pack with primary-source research. Social-media items are discussion signals, not verified facts. Nothing here is financial, legal or medical advice.* ![agent-skills by the numbers](https://storage.ghost.io/c/6e/89/6e896869-22ef-4281-a213-b4c462c17cff/content/images/2026/08/chart_dcec38a9f291c1d93e52.png)