Skills for Claude Code – install and usage guide

Anthropic's Claude Code reads skills in the SKILL.md standard. Skill Library for AI Agents collects 4166 free skills; find the right task and paste one command to install.

3 steps to use skills with Claude Code

Find a skill for your task (e.g. “make slides”, “SEO writing”, “docker”).

Copy the install command and run it in your terminal – for example for the academy-guide skill:

mkdir -p ~/.claude/skills && curl -fsSL https://skill.dn1nguoi.com/z/academy-guide-d7ada.tgz | tar xz -C ~/.claude/skills

Restart Claude Code, then call /skill-name or just describe the task.

Frequently asked questions

What is a skill for Claude Code?

A skill is a folder with a SKILL.md file that teaches Claude Code how to do a specific kind of work (SEO writing, slides, code review…). Claude Code loads a skill only when needed, so it costs no context up front.

Where do Claude Code skills live?

The skills folder for Claude Code is ~/.claude/skills. Each skill is a subfolder containing SKILL.md.

How do I install a skill for Claude Code?

Run a command like: mkdir -p ~/.claude/skills && curl -fsSL https://skill.dn1nguoi.com/z/<skill-id>.tgz | tar xz -C ~/.claude/skills. Every skill page on Skill Library for AI Agents has the command ready to copy. Then restart Claude Code.

Is it free?

Yes. Every skill on Skill Library for AI Agents is open source under the MIT or Apache 2.0 licence and ships with its original LICENSE file.

Featured skills

academy-guide – Stop and check this skill before finishing any reply to a question about how to use Claude or a…
api-and-interface-design – Guides stable API and interface design. Use when designing APIs, module boundaries, or any public…
ab-testing – When the user wants to plan, design, or implement an A/B test or experiment, or build a growth…
13c-metabolic-flux – Estimates intracellular metabolic fluxes from steady-state carbon-13 isotope-tracing measurements…
adaptyv – Uses the Adaptyv Bio Foundry API and Python SDK to design protein characterization experiments…
00-andruia-consultant – Usar al iniciar o mejorar un proyecto de IA: diagnostica código y restricciones, propone skills…
007 – Security audit, hardening, threat modeling (STRIDE/PASTA), Red/Blue Team, OWASP checks, code…
10-andruia-skill-smith – Usar para crear o mejorar una skill de Andru.ia: define entradas y resultados, redacta SKILL.md…
20-andruia-niche-intelligence – Usar tras definir el sector de un proyecto: prepara un dossier en español con contexto, normas…
2d-games – 2D game development principles. Sprites, atlases, tilemaps, physics, cameras, and genre patterns…
2slides-ppt-generator – AI-powered presentation generation via the 2slides API — create slides from text, match a…
360-feedback-system – 360 feedback register: reviewer, subject, review cycle, visibility, due date and score, as CSV…
3d-games – 3D game development principles. Rendering, shaders, physics, cameras.
3d-ui – Web and App implementation guide for 3D UI. Trigger when user wants actual 3D objects, perspective…
accessibility-compliance – Implement WCAG 2.2 compliant interfaces with mobile accessibility, inclusive design patterns, and…
ai-debt-detector – Use after generating code, after accepting AI suggestions, or when reviewing AI-written modules…
a11y-audit – Accessibility audit skill for scanning, fixing, and verifying WCAG 2.2 Level A and AA compliance…
ab-test-setup – When the user wants to plan, design, or implement an A/B test or experiment. Also use when the…
access-lifecycle – Use when preparing or running a user access review, checking that leavers lost their access…
baoyu-article-illustrator – Analyzes article structure, identifies positions requiring visual aids, generates illustrations…
antinet-doc-parse – 软件开发工程师与数据科学家在构建RAG系统时，当需处理PDF/Word/Excel等多格式复杂文档，用此技能可自动触发三级解析降级，一键输出高置信度结构化Markdown与元数据，免去繁琐清洗，直接…
401-403-bypass-techniques – Use when protected HTTP routes return 401 or 403.
api-noauth-hunt – Use when an API may expose data or privileged operations without authentication.
algorithmic-art – Creating algorithmic art using p5.js with seeded randomness and interactive parameter exploration…
browser-testing-with-devtools – Tests in real browsers via Chrome DevTools MCP. Use when building or debugging anything that runs…
ad-creative – When the user wants to generate, iterate, or scale ad creative — headlines, descriptions, primary…
aeon – This skill should be used for time series machine learning tasks including classification…
alphagenome – Looks up precomputed AlphaGenome Atlas effects for any GRCh38 single-nucleotide variant (AVI score…
3d-web-experience – Use when building or debugging web 3D scenes, product configurators or portfolios with Three.js…
a4a – Connect your AI agent to the A4A end-to-end encrypted agent-to-agent messaging network via local…
1password – Set up op CLI, sign in, and read or inject secrets.
3-statement-model – Build integrated IS/BS/CF financial workbooks in Excel.
aspnet-core – Build, review, refactor, or architect ASP.NET Core web applications using current official…
brand-guidelines – Applies OpenAI's brand colors and typography to any artifact that should match the Codex/OpenAI…
deepcode-self-refer – Answers questions about Deep Code CLI itself — including features, configuration options, slash…
accelerate – Run PyTorch training across GPUs with minimal changes.
actual-setup – Set up Actual Computer (actual.inc) inference in Hermes.
chatgpt-apps – Build, scaffold, refactor, and troubleshoot ChatGPT Apps SDK applications that combine an MCP…
canvas-design – Create beautiful visual art in .png and .pdf documents using design philosophy. You should use…
image-generator – Generate or edit images from text and local files, image URLs, or data URLs through image API. Use…
adversarial-ux-test – Roleplay a hostile user to find and triage UX pain points.
agent-merge-conflict-arbiter – Neutral arbiter for merge conflicts between two agents.
cli-creator – Build a composable CLI for Codex from API docs, an OpenAPI spec, existing curl examples, an SDK, a…
create-plan – Create a concise plan. Use when a user explicitly asks for a plan related to a coding task.
skill-digester – Reviews and improves another DeepCode skill's SKILL.md description field, and guides Agent Skill…
agentmail – Use when an agent needs AgentMail CLI email inboxes.
ai-presenter-video – Make a verified AI presenter video from script + image.
cloudflare-deploy – Deploy applications and infrastructure to Cloudflare using Workers, Pages, and related platform…
gh-address-comments – Help address review/issue comments on the open GitHub PR for the current branch using gh CLI…
skill-writer – Guide users through creating, updating, debugging, and validating Agent Skills for AI agents. Use…
airtable – Airtable REST API via curl. Records CRUD, filters, upserts.
anatomy – Explain an idea as an interactive isometric machine figure.
define-goal – Help the user define a concrete, measurable goal before starting work, especially when they ask to…
gh-fix-ci – Inspect GitHub PR checks with gh, pull failing GitHub Actions logs, summarize failure context…
video-generator – 使用AI大模型根据文字、首尾帧图片或图片/视频/音频参考素材生成带对白和环境音的视频。适用于文生视频、图生视频、首尾帧过渡和多模态参考视频生成，通过 Deep Code Plus…
antigravity-cli – Operate the Antigravity CLI (agy): plugins, auth, sandbox.
apple-notes – Manage Apple Notes via memo CLI: create, search, edit.
gh-address-comments – Help address review/issue comments on the open GitHub PR for the current branch using gh CLI…
internal-comms – A set of resources to help me write all kinds of internal communications, using the formats that…
apple-reminders – Apple Reminders via remindctl: add, list, complete.

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