Everything Claude Code skills
A very large library of 300+ engineering skills for Claude Code and other coding agents.
A Premium skill. Premium opens soon.
- By
- Affaan Mustafa
- Licence
- MIT
- Works in
- 17 apps
What Everything Claude Code makes
Everything Claude Code, now called ECC, is a huge collection of skills for coding agents. Its README describes a plan, test, implement, review, verify and remember routine, and the skills cover testing, security, documentation, frontend, data and operations.
Our pick is the skills folder only, which holds over 300 skills. The full project also has agents, commands and hooks, which you can get by following its own install guide. Treat this as a library to pick from, not something to switch on all at once.
Best for: Developers who want a deep shelf of ready made engineering skills to pick from.
- tdd-workflow: write a failing test first, then make it pass, then clean up.
- security-review: a checklist for login, user input, secrets and payments.
- codebase-onboarding: maps an unfamiliar project and writes a starter guide for it.
- api-design: naming, status codes, paging and error patterns for web APIs.
- article-writing: long form writing in a voice taken from your examples.
Example prompts
Type something like this once the skill is added. Your app opens the skill when the request matches.
-
Use the tdd-workflow skill to add a discount code feature to my shop.
-
Run security-review on the sign up and payment code in this project.
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Use codebase-onboarding to explain this project to a new teammate.
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Write a blog post in the voice of these three examples I will paste.
What’s inside
614 files in this pack, with its MIT licence kept inside. 132 are program files your agent can run. Read them before you install.
- accessibility/ 1 files
- agent-architecture-audit/ 1 files
- agent-eval/ 1 files
- agent-harness-construction/ 1 files
- agent-introspection-debugging/ 1 files
- agent-payment-x402/ 1 files
- agent-runtime-gateway-smoke-test/ 1 files
- agent-security-hardening/ 1 files
- agent-self-evaluation/ 7 files
- agent-sort/ 1 files
- agentic-engineering/ 1 files
- agentic-os/ 1 files
- ai-first-engineering/ 1 files
- ai-regression-testing/ 1 files
- and 298 more
Skills in this pack
- accessibility
- agent-architecture-audit
- agent-eval
- agent-harness-construction
- agent-introspection-debugging
- agent-payment-x402
- agent-runtime-gateway-smoke-test
- agent-security-hardening
- agent-self-evaluation
- agent-sort
- agentic-engineering
- agentic-os
- ai-first-engineering
- ai-regression-testing
- android-clean-architecture
- angular-developer
- api-connector-builder
- api-design
- architecture-decision-records
- article-writing
- automation-audit-ops
- autonomous-agent-harness
- autonomous-loops
- backend-patterns
- benchmark
- benchmark-methodology
- benchmark-optimization-loop
- bengali-nlp
- blender-motion-state-inspection
- blueprint
- brand-discovery
- brand-voice
- brownfield-retrospective
- browser-qa
- bun-runtime
- canary-watch
- carrier-relationship-management
- change-impact
- cisco-ios-patterns
- ck
Showing 40 of 311 skills. Pick the few you need.
Which apps it works in
A skill is a folder of plain files, so any app that reads the open skills format can use it. Pick your app for its page.
How to add Everything Claude Code to your app
Step by step for each app. We say where to click, so you never need to leave this page.
ChatGPTby OpenAI
- 1 Download the skill (.zip) with the button at the top of this page, then unzip it.
- 2 Open the ChatGPT desktop app and look for Skills in the sidebar, where standalone skills are listed.
- 3 Add the folders inside there if your version offers it. If you do not see Skills yet, use this skill in Claude or Codex instead.
- 4 In a chat, type @ and pick the skill, or just ask. Ask for what you want, for example: “Use the tdd-workflow skill to add a discount code feature to my shop.”
To make your own, describe the workflow to @skill-creator in ChatGPT Work and it drafts a skill for you.
Claude appby Anthropic
- 1 Download the skill (.zip) with the button at the top of this page.
- 2 In the Claude app, open Settings > Features.
- 3 Upload the .zip. If the app wants one skill at a time, unzip it and upload the .zip of a single skill folder instead.
- 4 Ask for what you want, for example: “Use the tdd-workflow skill to add a discount code feature to my shop.”
The current Claude Help Center lists Free, Pro, Max, Team and Enterprise. Organization policy can restrict uploads and sharing. Chat runs code in an isolated environment; uploading a skill does not give it your local project, coding-agent tools or unrestricted network access.
Codexby OpenAI
- 1 Download the skill (.zip) with the button at the top of this page, then unzip it.
- 2 Move the folders inside into your skills folder:
~/.agents/skills - 3 Or paste the install prompt below into Codex and let it do the copying.
- 4 Start a new session. Ask for what you want, for example: “Use the tdd-workflow skill to add a discount code feature to my shop.”
Install prompt: paste this into Codex
I downloaded the agent skill "Everything Claude Code" as everything-claude-code.zip. Unzip it and copy the folders inside into ~/.agents/skills. Before you finish, list every file it contains, show me any scripts and what they do, and stop if anything asks for passwords, API keys or downloads from other websites.
To use the skill in one project only, put it in .agents/skills inside that project instead.
Claude Codeby Anthropic
- 1 Download the skill (.zip) with the button at the top of this page, then unzip it.
- 2 Move the folders inside into your skills folder:
~/.claude/skills - 3 Or paste the install prompt below into Claude Code and let it do the copying.
- 4 Start a new session. Ask for what you want, for example: “Use the tdd-workflow skill to add a discount code feature to my shop.”
Install prompt: paste this into Claude Code
I downloaded the agent skill "Everything Claude Code" as everything-claude-code.zip. Unzip it and copy the folders inside into ~/.claude/skills. Before you finish, list every file it contains, show me any scripts and what they do, and stop if anything asks for passwords, API keys or downloads from other websites.
Built-in installer: claude plugin marketplace add <owner/repo>
Built-in installer: claude plugin install <plugin>@<marketplace>
To use the skill in one project only, put it in .claude/skills inside that project instead.
Cursor
- 1 Download the skill (.zip) with the button at the top of this page, then unzip it.
- 2 Move the folders inside into your skills folder:
~/.cursor/skills - 3 Or paste the install prompt below into Cursor and let it do the copying.
- 4 Start a new session. Ask for what you want, for example: “Use the tdd-workflow skill to add a discount code feature to my shop.”
Install prompt: paste this into Cursor
I downloaded the agent skill "Everything Claude Code" as everything-claude-code.zip. Unzip it and copy the folders inside into ~/.cursor/skills. Before you finish, list every file it contains, show me any scripts and what they do, and stop if anything asks for passwords, API keys or downloads from other websites.
To use the skill in one project only, put it in .cursor/skills inside that project instead. Cursor also reads ~/.agents/skills, ~/.claude/skills, ~/.codex/skills.
GitHub Copilotby GitHub
- 1 Download the skill (.zip) with the button at the top of this page, then unzip it.
- 2 Move the folders inside into your skills folder:
~/.copilot/skills - 3 Or paste the install prompt below into GitHub Copilot and let it do the copying.
- 4 Start a new session. Ask for what you want, for example: “Use the tdd-workflow skill to add a discount code feature to my shop.”
Install prompt: paste this into GitHub Copilot
I downloaded the agent skill "Everything Claude Code" as everything-claude-code.zip. Unzip it and copy the folders inside into ~/.copilot/skills. Before you finish, list every file it contains, show me any scripts and what they do, and stop if anything asks for passwords, API keys or downloads from other websites.
Built-in installer: gh skill install <owner/repo> <skill> --agent github-copilot --scope user
To use the skill in one project only, put it in .github/skills inside that project instead. GitHub Copilot also reads ~/.agents/skills.
Gemini CLIby Google
- 1 Download the skill (.zip) with the button at the top of this page, then unzip it.
- 2 Move the folders inside into your skills folder:
~/.gemini/skills - 3 Or paste the install prompt below into Gemini CLI and let it do the copying.
- 4 Start a new session. Ask for what you want, for example: “Use the tdd-workflow skill to add a discount code feature to my shop.”
Install prompt: paste this into Gemini CLI
I downloaded the agent skill "Everything Claude Code" as everything-claude-code.zip. Unzip it and copy the folders inside into ~/.gemini/skills. Before you finish, list every file it contains, show me any scripts and what they do, and stop if anything asks for passwords, API keys or downloads from other websites.
Built-in installer: gemini skills install <git-url>
To use the skill in one project only, put it in .gemini/skills inside that project instead. Gemini CLI also reads ~/.agents/skills.
Windsurf
- 1 Download the skill (.zip) with the button at the top of this page, then unzip it.
- 2 Move the folders inside into your skills folder:
~/.codeium/windsurf/skills - 3 Or paste the install prompt below into Windsurf and let it do the copying.
- 4 Start a new session. Ask for what you want, for example: “Use the tdd-workflow skill to add a discount code feature to my shop.”
Install prompt: paste this into Windsurf
I downloaded the agent skill "Everything Claude Code" as everything-claude-code.zip. Unzip it and copy the folders inside into ~/.codeium/windsurf/skills. Before you finish, list every file it contains, show me any scripts and what they do, and stop if anything asks for passwords, API keys or downloads from other websites.
To use the skill in one project only, put it in .windsurf/skills inside that project instead.
Kiro
- 1 Download the skill (.zip) with the button at the top of this page, then unzip it.
- 2 Move the folders inside into your skills folder:
~/.kiro/skills - 3 Or paste the install prompt below into Kiro and let it do the copying.
- 4 Start a new session. Ask for what you want, for example: “Use the tdd-workflow skill to add a discount code feature to my shop.”
Install prompt: paste this into Kiro
I downloaded the agent skill "Everything Claude Code" as everything-claude-code.zip. Unzip it and copy the folders inside into ~/.kiro/skills. Before you finish, list every file it contains, show me any scripts and what they do, and stop if anything asks for passwords, API keys or downloads from other websites.
To use the skill in one project only, put it in .kiro/skills inside that project instead.
Antigravityby Google
- 1 Download the skill (.zip) with the button at the top of this page, then unzip it.
- 2 Move the folders inside into your skills folder:
~/.gemini/antigravity/skills - 3 Or paste the install prompt below into Antigravity and let it do the copying.
- 4 Start a new session. Ask for what you want, for example: “Use the tdd-workflow skill to add a discount code feature to my shop.”
Install prompt: paste this into Antigravity
I downloaded the agent skill "Everything Claude Code" as everything-claude-code.zip. Unzip it and copy the folders inside into ~/.gemini/antigravity/skills. Before you finish, list every file it contains, show me any scripts and what they do, and stop if anything asks for passwords, API keys or downloads from other websites.
To use the skill in one project only, put it in .agents/skills inside that project instead.
OpenCode
- 1 Download the skill (.zip) with the button at the top of this page, then unzip it.
- 2 Move the folders inside into your skills folder:
~/.config/opencode/skills - 3 Or paste the install prompt below into OpenCode and let it do the copying.
- 4 Start a new session. Ask for what you want, for example: “Use the tdd-workflow skill to add a discount code feature to my shop.”
Install prompt: paste this into OpenCode
I downloaded the agent skill "Everything Claude Code" as everything-claude-code.zip. Unzip it and copy the folders inside into ~/.config/opencode/skills. Before you finish, list every file it contains, show me any scripts and what they do, and stop if anything asks for passwords, API keys or downloads from other websites.
To use the skill in one project only, put it in .opencode/skills inside that project instead. OpenCode also reads ~/.agents/skills, ~/.claude/skills.
Cline
- 1 Download the skill (.zip) with the button at the top of this page, then unzip it.
- 2 Move the folders inside into your skills folder:
~/.agents/skills - 3 Or paste the install prompt below into Cline and let it do the copying.
- 4 Start a new session. Ask for what you want, for example: “Use the tdd-workflow skill to add a discount code feature to my shop.”
Install prompt: paste this into Cline
I downloaded the agent skill "Everything Claude Code" as everything-claude-code.zip. Unzip it and copy the folders inside into ~/.agents/skills. Before you finish, list every file it contains, show me any scripts and what they do, and stop if anything asks for passwords, API keys or downloads from other websites.
To use the skill in one project only, put it in .agents/skills inside that project instead.
Amp
- 1 Download the skill (.zip) with the button at the top of this page, then unzip it.
- 2 Move the folders inside into your skills folder:
~/.config/agents/skills - 3 Or paste the install prompt below into Amp and let it do the copying.
- 4 Start a new session. Ask for what you want, for example: “Use the tdd-workflow skill to add a discount code feature to my shop.”
Install prompt: paste this into Amp
I downloaded the agent skill "Everything Claude Code" as everything-claude-code.zip. Unzip it and copy the folders inside into ~/.config/agents/skills. Before you finish, list every file it contains, show me any scripts and what they do, and stop if anything asks for passwords, API keys or downloads from other websites.
Built-in installer: amp skill add <github-url> --global
To use the skill in one project only, put it in .agents/skills inside that project instead. Amp also reads ~/.agents/skills, ~/.config/amp/skills, ~/.claude/skills.
Gooseby Block
- 1 Download the skill (.zip) with the button at the top of this page, then unzip it.
- 2 Move the folders inside into your skills folder:
~/.agents/skills - 3 Or paste the install prompt below into Goose and let it do the copying.
- 4 Start a new session. Ask for what you want, for example: “Use the tdd-workflow skill to add a discount code feature to my shop.”
Install prompt: paste this into Goose
I downloaded the agent skill "Everything Claude Code" as everything-claude-code.zip. Unzip it and copy the folders inside into ~/.agents/skills. Before you finish, list every file it contains, show me any scripts and what they do, and stop if anything asks for passwords, API keys or downloads from other websites.
To use the skill in one project only, put it in .agents/skills inside that project instead. Goose also reads ~/.claude/skills.
OpenClaw
- 1 Download the skill (.zip) with the button at the top of this page, then unzip it.
- 2 Move the folders inside into your skills folder:
~/.openclaw/skills - 3 Or paste the install prompt below into OpenClaw and let it do the copying.
- 4 Start a new session. Ask for what you want, for example: “Use the tdd-workflow skill to add a discount code feature to my shop.”
Install prompt: paste this into OpenClaw
I downloaded the agent skill "Everything Claude Code" as everything-claude-code.zip. Unzip it and copy the folders inside into ~/.openclaw/skills. Before you finish, list every file it contains, show me any scripts and what they do, and stop if anything asks for passwords, API keys or downloads from other websites.
Built-in installer: openclaw skills install @owner/<slug>
Built-in installer: openclaw skills install @owner/<slug> --global
Built-in installer: openclaw skills install git:owner/repo@ref
To use the skill in one project only, put it in skills inside that project instead. OpenClaw also reads ~/.agents/skills.
Hermes Agentby Nous Research
- 1 Download the skill (.zip) with the button at the top of this page, then unzip it.
- 2 Move the folders inside into your skills folder:
~/.hermes/skills - 3 Or paste the install prompt below into Hermes Agent and let it do the copying.
- 4 Start a new session. Ask for what you want, for example: “Use the tdd-workflow skill to add a discount code feature to my shop.”
Install prompt: paste this into Hermes Agent
I downloaded the agent skill "Everything Claude Code" as everything-claude-code.zip. Unzip it and copy the folders inside into ~/.hermes/skills. Before you finish, list every file it contains, show me any scripts and what they do, and stop if anything asks for passwords, API keys or downloads from other websites.
Built-in installer: hermes skills install <owner/repo/skill>
VS Codeby Microsoft
- 1 Download the skill (.zip) with the button at the top of this page, then unzip it.
- 2 Move the folders inside into your skills folder:
~/.copilot/skills - 3 Or paste the install prompt below into VS Code and let it do the copying.
- 4 Start a new session. Ask for what you want, for example: “Use the tdd-workflow skill to add a discount code feature to my shop.”
Install prompt: paste this into VS Code
I downloaded the agent skill "Everything Claude Code" as everything-claude-code.zip. Unzip it and copy the folders inside into ~/.copilot/skills. Before you finish, list every file it contains, show me any scripts and what they do, and stop if anything asks for passwords, API keys or downloads from other websites.
To use the skill in one project only, put it in .github/skills inside that project instead. VS Code also reads ~/.claude/skills, ~/.agents/skills.
This skill includes 132 program files. That is normal for skills that build real files, but read them first, and stop if anything asks for passwords or outside downloads.
Questions about Everything Claude Code
Do I need all 300 skills?
No. Copy only the ones you need. Loading many at once can crowd the agent's attention.
Does it only work with Claude Code?
It works best with Claude Code, per its README, and has adapters for other tools with fewer features.
Which licence?
MIT, by Affaan Mustafa. The licence file is included.
Is the Everything Claude Code skill free?
It is a Premium skill on Best Agent Skills. Premium opens soon, with monthly, yearly and lifetime plans on the pricing page.
Who made the Everything Claude Code skill?
Affaan Mustafa. We did not write it. Best Agent Skills curates skills like this one, explains them in plain words and shows how to add them to your app. It is shared under the MIT licence (Copyright (c) 2026 Affaan Mustafa).
