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Independent project, not affiliated with Anthropic
addyosmani avatar

Browser Testing With Devtools

addyosmani/agent-skills
21.5k installs88.2k stars
Summary

This connects Claude to Chrome DevTools via MCP so it can actually see what's happening in the browser instead of guessing. The agent can grab screenshots, inspect the DOM, read console errors, analyze network requests, and profile performance. Most useful when debugging UI issues or verifying that a fix actually works at runtime. The skill includes a solid security section that's worth reading: it treats all browser content as untrusted data and sets clear boundaries around JavaScript execution. The debugging workflows for UI bugs, network issues, and performance problems are practical and opinionated. Requires the chrome-devtools MCP server configured in your project.

Install to Claude Code

npx -y skills add addyosmani/agent-skills --skill browser-testing-with-devtools --agent claude-code

Installs into .claude/skills of the current project.

CodeRabbit
CodeRabbit
AI writes the code. CodeRabbit catches the slop.
Try For Free →
belt - the only tool your agent needs
belt - the only tool your agent needs
belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →
inference shell
inference shell
create and run specialised agents in minutes
build now →
MCP-ready Email SendingMCP-ready Email Sending
MCP-ready Email Sending
Plug Mailtrap into your AI workflow and let it handle the email.
Connect Mailtrap MCP →
Make your agent a DeFi expert
Make your agent a DeFi expert
Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →
Capacitor - Shared memory for your team’s coding agents.
Capacitor - Shared memory for your team’s coding agents.
Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.
Try For Free →
CodeScene MCP ServerCodeScene MCP Server
CodeScene MCP Server
Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →
Give your AI the whole web as clean markdownGive your AI the whole web as clean markdown
Give your AI the whole web as clean markdown
Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →
CodeRabbit
CodeRabbit
AI writes the code. CodeRabbit catches the slop.
Try For Free →
belt - the only tool your agent needs
belt - the only tool your agent needs
belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →
inference shell
inference shell
create and run specialised agents in minutes
build now →
MCP-ready Email SendingMCP-ready Email Sending
MCP-ready Email Sending
Plug Mailtrap into your AI workflow and let it handle the email.
Connect Mailtrap MCP →
Make your agent a DeFi expert
Make your agent a DeFi expert
Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →
Capacitor - Shared memory for your team’s coding agents.
Capacitor - Shared memory for your team’s coding agents.
Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.
Try For Free →
CodeScene MCP ServerCodeScene MCP Server
CodeScene MCP Server
Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →
Give your AI the whole web as clean markdownGive your AI the whole web as clean markdown
Give your AI the whole web as clean markdown
Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →
Files
SKILL.md

Select a file.

Featured
CodeRabbit
CodeRabbit
AI writes the code. CodeRabbit catches the slop.
Try For Free →
belt - the only tool your agent needs
belt - the only tool your agent needs
belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →
inference shell
inference shell
create and run specialised agents in minutes
build now →
MCP-ready Email SendingMCP-ready Email Sending
MCP-ready Email Sending
Plug Mailtrap into your AI workflow and let it handle the email.
Connect Mailtrap MCP →
Make your agent a DeFi expert
Make your agent a DeFi expert
Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →
Capacitor - Shared memory for your team’s coding agents.
Capacitor - Shared memory for your team’s coding agents.
Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.
Try For Free →
CodeScene MCP ServerCodeScene MCP Server
CodeScene MCP Server
Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →
Give your AI the whole web as clean markdownGive your AI the whole web as clean markdown
Give your AI the whole web as clean markdown
Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →
Categories
Frontend DevelopmentBackend & APIsTesting & QAAI & Agent BuildingDebuggingAutomation & WorkflowsDesign & UI/UX
First SeenApr 16, 2026
View on GitHub

More from addyosmani/agent-skills

All 24 skills →
  • Ci Cd And Automation21.3k
  • Shipping And Launch20.9k
  • Source Driven Development20.8k
  • Deprecation And Migration20.7k
  • Interview Me19.2k
  • Doubt Driven Development18.9k
  • Observability And Instrumentation16.7k
  • Code Review And Quality28.7k
  • Frontend Ui Engineering25.6k
  • Planning And Task Breakdown25.2k
  • Spec Driven Development25k
  • Security And Hardening24.8k
  • Performance Optimization24.2k
  • Documentation And Adrs24k
  • Incremental Implementation23.7k
  • Code Simplification23.7k
  • Debugging And Error Recovery23.6k
  • Test Driven Development23.3k
  • Context Engineering22.9k
  • Api And Interface Design22.5k
  • Using Agent Skills22k
  • Idea Refine22k
  • Git Workflow And Versioning21.6k

Recommended

More Frontend Development →
addyosmani avatar
core-web-vitals

addyosmani/web-quality-skills

Optimize Core Web Vitals (LCP, INP, CLS) for better page experience and search ranking. Use when asked to "improve Core Web Vitals", "fix LCP", "reduce CLS", "optimize INP", "page experience optimization", or "fix layout shifts".
21.3k
2.6k
warpdotdev avatar
reproduce-bug-report

warpdotdev/common-skills

Launch Oz cloud agents with computer use to reproduce UI-focused bug reports, capture visual evidence (a screen recording by default), and report reproduction findings. Use when investigating a specific interactive or visual bug from an issue, ticket, support report, or prompt.
20k
152
wshobson avatar
python-design-patterns

wshobson/agents

Python design patterns including KISS, Separation of Concerns, Single Responsibility, and composition over inheritance. Use this skill when designing a new service or component from scratch and choosing how to layer responsibilities, when refactoring a God class or monolithic function that has grown too large, when deciding whether to add a new abstraction or live with duplication, when evaluating a pull request for structural issues like tight coupling or leaking internal types, when choosing between inheritance and composition for a new class hierarchy, or when a codebase is becoming hard to test because of entangled I/O and business logic.
18.7k
38.9k
antfu avatar
pinia

antfu/skills

Pinia official Vue state management library, type-safe and extensible. Use when defining stores, working with state/getters/actions, or implementing store patterns in Vue apps.
17.1k
5.8k
clerk avatar
clerk-cli

clerk/skills

Operate the Clerk CLI (`clerk` binary) for authentication, user/org/session management, impersonation, local webhook testing, deploy verification, instance config, env keys, feature toggles, and any Clerk Backend, Platform, or Frontend API call. Use when the user mentions Clerk management tasks, "list clerk users", "impersonate a user", "test webhooks locally", "enable orgs", "enable billing", "clerk env pull", "clerk doctor", "clerk deploy", "clerk api", or any ad-hoc Clerk API request. Prefer the CLI over raw HTTP: it handles auth, key resolution, app/instance targeting, and formatting automatically.
16.2k
66
agentspace-so avatar
gpt-image-2

agentspace-so/runcomfy-agent-skills

Image generation and editing with OpenAI's GPT Image 2, optimized for embedded text, logos, and layout precision.
16k
11