# agent-skills 0.6.2 — Addy Osmani adds /build and /webperf for AI coding agents

> Addy Osmani's open-source agent-skills bundle hits v0.6.2 with new slash commands and hardened security skills.

- Org: Addy Osmani
- Date: 2026-06-11
- Category: repo, tool
- Source: https://github.com/addyosmani/agent-skills
- Canonical page: https://ai-tldr.dev/releases/addyosmani-agent-skills-0-6-2/

## In short

Addy Osmani's MIT-licensed agent-skills bundle hits v0.6.2 with a one-pass /build command, a /webperf web-performance auditor, an observability skill, native Antigravity CLI support, and hardened security skills. The repo now sits at 56.7k stars.

## What it is

agent-skills is a collection of 24 structured workflows you load into a coding agent like Claude Code, Cursor, Codex, Gemini CLI, or Antigravity. Each skill is a Markdown file that encodes a senior engineer's checklist — TDD, security review, performance audit, observability — so the agent follows the same steps a careful human would.

## How it works

Skills live as MIT-licensed Markdown plus a small set of slash commands. You add the repo to your agent's marketplace and trigger them with /spec, /plan, /build, /test, /review, /code-simplify, /ship, or /webperf. v0.6.2 adds the /build one-pass plan-and-implement command, a web-performance auditor persona, an observability-and-instrumentation skill, native Antigravity CLI (agy) support, and stronger security skills covering threat modeling, SSRF, supply-chain risks, and LLM-specific issues.

## Why it matters

Coding agents will skip tests or ship a quick-and-dirty patch unless you stop them. agent-skills puts that brake in front of the model: ship gates, security checks, and performance audits you trigger with a slash command. 56.7k stars and 2,660 added today on GitHub trending say plenty of teams want that brake.

## Who it's for

engineers using Claude Code, Cursor, Codex, Gemini CLI, or Antigravity

## Try it

In Claude Code: /plugin marketplace add addyosmani/agent-skills

## Links

- [GitHub Repo](https://github.com/addyosmani/agent-skills)
- [v0.6.2 Release](https://github.com/addyosmani/agent-skills/releases/tag/0.6.2)
- [All Releases](https://github.com/addyosmani/agent-skills/releases)