# Claude Code Skills & Plugins — Agent Skills for Every Coding Tool

**388 production-ready Claude Code skills, plugins, and agent skills for 13 AI coding tools.**

The most comprehensive open-source library of Claude Code skills and agent plugins — also works with OpenAI Codex, Gemini CLI, Cursor, and 9 more coding agents. Reusable expertise packages covering engineering, DevOps, marketing (incl. AEO — Answer Engine Optimization for LLM citation), security (PreToolUse hooks), compliance, C-level advisory (incl. founder-mode CFO/CMO/CRO/CPO/COO/CHRO/CISO/GC/CDO/CAIO/CCO/VPE personas + 21 /cs:* slash commands), productivity (capture/email/reflect/weekly-review/deep-work/meetings), an academic research stack (litreview/grants/dossier/patent/syllabus/pulse/notebooklm/deep-research + hybrid router), and enterprise Research Operations (clinical-research/research-finance/market-research/product-research, v2.9.0).

**Works with:** Claude Code · OpenAI Codex · Gemini CLI · OpenClaw · Hermes Agent[^hermes] · Mistral Vibe[^vibe] · Cursor · Aider · Windsurf · Kilo Code · OpenCode · Augment · Antigravity

[^hermes]: Hermes Agent is **BYO-sync tier**: the repo ships a pre-generated `.hermes/skills/claude-skills/` tree, but you run `python scripts/sync-hermes-skills.py` once locally to install into `~/.hermes/skills/`. Uses the same agentskills.io SKILL.md standard — no format conversion.
[^vibe]: Mistral Vibe is also **BYO-sync tier**: the repo ships a pre-generated `.vibe/skills/claude-skills/` tree, run `./scripts/vibe-install.sh` once locally to install into `~/.vibe/skills/`. Same agentskills.io SKILL.md standard — no format conversion. Docs: <https://docs.mistral.ai/mistral-vibe/agents-skills>.

[![License: MIT](https://img.shields.io/badge/License-MIT-yellow?style=for-the-badge)](https://opensource.org/licenses/MIT)
[![Skills](https://img.shields.io/badge/Skills-388-brightgreen?style=for-the-badge)](#skills-overview)
[![Agents](https://img.shields.io/badge/Agents-118-blue?style=for-the-badge)](#agents)
[![Personas](https://img.shields.io/badge/Personas-7-purple?style=for-the-badge)](#personas)
[![Commands](https://img.shields.io/badge/Commands-150-orange?style=for-the-badge)](#commands)
[![Stars](https://img.shields.io/github/stars/alirezarezvani/claude-skills?style=for-the-badge)](https://github.com/alirezarezvani/claude-skills/stargazers)
[![SkillCheck Validated](https://img.shields.io/badge/SkillCheck-Validated-4c1?style=for-the-badge)](https://getskillcheck.com)

> **5,200+ GitHub stars** — the most comprehensive open-source Claude Code skills & agent plugins library.

---

## What Are Claude Code Skills & Agent Plugins?

Claude Code skills (also called agent skills or coding agent plugins) are modular instruction packages that give AI coding agents domain expertise they don't have out of the box. Each skill includes:

- **SKILL.md** — structured instructions, workflows, and decision frameworks
- **Python tools** — 706 CLI scripts (all stdlib-only, zero pip installs)
- **Reference docs** — 823 templates, checklists, and domain-specific knowledge files

**One repo, thirteen platforms.** Works natively as Claude Code plugins, Codex agent skills, Gemini CLI skills, Hermes Agent skills, Mistral Vibe skills, and converts to more tools via `scripts/convert.sh`. All 727 Python tools run anywhere Python runs.

### Skills vs Agents vs Personas

| | Skills | Agents | Personas |
|---|---|---|---|
| **Purpose** | How to execute a task | What task to do | Who is thinking |
| **Scope** | Single domain | Single domain | Cross-domain |
| **Voice** | Neutral | Professional | Personality-driven |
| **Example** | "Follow these steps for SEO" | "Run a security audit" | "Think like a startup CTO" |

All three work together. See [Orchestration](#orchestration) for how to combine them.

---

## Quick Install

> **Windows users:** clone with `git clone -c core.symlinks=true` (Developer Mode enabled) — otherwise the `.gemini/`/`.codex/`/`.vibe/`/`.hermes/` mirror trees check out as 1-line pointer text files instead of skills — and set `PYTHONUTF8=1` so tools that print Unicode don't crash on legacy-codepage consoles. Details: [INSTALLATION.md → Windows Notes](INSTALLATION.md#windows-notes).

### Gemini CLI (New)

```bash
# Clone the repository
git clone https://github.com/alirezarezvani/claude-skills.git
cd claude-skills

# Run the setup script
./scripts/gemini-install.sh

# Start using skills
> activate_skill(name="senior-architect")
```

### Claude Code (Recommended)

```bash
# Add the marketplace
/plugin marketplace add alirezarezvani/claude-skills

# Install by domain
/plugin install engineering-skills@claude-code-skills          # 24 core engineering
/plugin install engineering-advanced-skills@claude-code-skills  # 25 POWERFUL-tier
/plugin install product-skills@claude-code-skills               # 12 product skills
/plugin install marketing-skills@claude-code-skills             # 43 marketing skills
/plugin install ra-qm-skills@claude-code-skills                 # 12 regulatory/quality
/plugin install pm-skills@claude-code-skills                    # 6 project management
/plugin install c-level-skills@claude-code-skills               # 28 C-level advisory (full C-suite)
/plugin install business-growth-skills@claude-code-skills       # 4 business & growth
/plugin install finance-skills@claude-code-skills               # 2 finance (analyst + SaaS metrics)

# Or install individual skills
/plugin install skill-security-auditor@claude-code-skills       # Security scanner
/plugin install playwright-pro@claude-code-skills                  # Playwright testing toolkit
/plugin install self-improving-agent@claude-code-skills         # Auto-memory curation
/plugin install content-creator@claude-code-skills              # Single skill
```

### OpenAI Codex

```bash
npx agent-skills-cli add alirezarezvani/claude-skills --agent codex
# Or: git clone + ./scripts/codex-install.sh
```

### OpenClaw

```bash
bash <(curl -s https://raw.githubusercontent.com/alirezarezvani/claude-skills/main/scripts/openclaw-install.sh)
```

### Manual Installation

```bash
git clone https://github.com/alirezarezvani/claude-skills.git
# Copy any skill folder to ~/.claude/skills/ (Claude Code) or ~/.codex/skills/ (Codex)
```

---

## Multi-Tool Support (New)

**Convert all 345 skills to 9 AI coding tools** with a single script:

| Tool | Format | Install |
|------|--------|---------|
| **Cursor** | `.mdc` rules | `./scripts/install.sh --tool cursor --target .` |
| **Aider** | `CONVENTIONS.md` | `./scripts/install.sh --tool aider --target .` |
| **Kilo Code** | `.kilocode/rules/` | `./scripts/install.sh --tool kilocode --target .` |
| **Windsurf** | `.windsurf/skills/` | `./scripts/install.sh --tool windsurf --target .` |
| **OpenCode** | `.opencode/skills/` | `./scripts/install.sh --tool opencode --target .` |
| **Augment** | `.augment/rules/` | `./scripts/install.sh --tool augment --target .` |
| **Antigravity** | `~/.gemini/antigravity/skills/` | `./scripts/install.sh --tool antigravity` |
| **Hermes Agent** | `~/.hermes/skills/` | `python scripts/sync-hermes-skills.py --verbose` |
| **Mistral Vibe** | `~/.vibe/skills/` | `./scripts/vibe-install.sh` |

**How it works:**

```bash
# 1. Convert all skills to all tools (takes ~15 seconds)
./scripts/convert.sh --tool all

# 2. Install into your project (with confirmation)
./scripts/install.sh --tool cursor --target /path/to/project

# Or use --force to skip confirmation:
./scripts/install.sh --tool aider --target . --force

# 3. Verify
find .cursor/rules -name "*.mdc" | wc -l  # Should show 346
```

**Each tool gets:**
- ✅ All 345 skills converted to native format
- ✅ Per-tool README with install/verify/update steps
- ✅ Support for scripts, references, templates where applicable
- ✅ Zero manual conversion work

Run `./scripts/convert.sh --tool all` to generate tool-specific outputs locally.

---

## Skills Overview

**388 production-ready skills across 20 domains:**

| Domain | Skills | Highlights | Details |
|--------|--------|------------|---------|
| **🔧 Engineering — Core** | 53 | Architecture, frontend, backend, fullstack, QA, DevOps, SecOps, AI/ML, data, Playwright Pro (test gen, flaky fix, migrations), self-improving agent (auto-memory curation), security suite, a11y audit, **named-persona-adversarial-review** (review via named engineering philosophies), **embedded-iot-mentor** (MCU/board selection, firmware-reuse-first, breadboard-MVP discipline) | [engineering-team/](engineering-team/) |
| **⚡ Engineering — POWERFUL** | 93 | Agent designer, RAG architect, database designer, CI/CD builder, security auditor, MCP builder, AgentHub, Helm charts, Terraform, self-eval, llm-wiki, tc-tracker, autoresearch-agent, **reliability portfolio** (feature-flags-architect, kubernetes-operator, chaos-engineering, slo-architect), ship-gate, security-guidance PreToolUse hook, **Matt Pocock skills** (write-a-skill, caveman, grill-me, handoff, grill-with-docs), **zero-hallucination-coder** (Discuss→Map→Decompose→Execute→Verify), **agent-harness** (goal→plan→execute→verify→close loops over any domain), **memory-engineering** (price the memory write path, pick which cost to pay, audit FACT/SKILL/LOG density, gate on a forgetting policy), **skillopt-sleep** (nightly gated self-evolution from real Claude Code sessions, vendored from microsoft/SkillOpt), **book-to-skill** (compile a book, docs folder, or spec collection into a knowledge-base skill, then package it as a plugin), **boost-asio-pro** (async C++ networking — version-gated coroutine/callback styles, strand discipline), **human-gate** (batched human review as a structured artifact + a gate that refuses to close on open blockers), **agent-memory** (four-tier L0-L3 memory ladder over Claude Code hooks; promotion earned by recurrence across sessions and days, redacted or contested claims refuse to promote, nothing reaches CLAUDE.md without a human adopt), **skill-doctor** (grade the agent setup from real session history — rubric-judged, deterministically gated, evidence-traced skill edits), **deep-learning-book** (companion to the free Goodfellow/Bengio/Courville textbook — 20 chapter files with a 2016→2026 delta layer, reading-path planner, Ch-11 training diagnostic, capacity planner, FLOP/activation-memory calculator), **spinning-up-deep-rl** (knowledge base compiled from OpenAI's Spinning Up in Deep RL — RL fundamentals, the model-free taxonomy, policy-gradient derivations, and one chapter per reference algorithm) | [engineering/](engineering/) |
| **🎯 Product** | 17 | Product manager, agile PO, strategist, UX researcher, UI design, landing pages, SaaS scaffolder, analytics, experiment designer, discovery, roadmap communicator, code-to-prd, apple-hig-expert | [product-team/](product-team/) |
| **📣 Marketing** | 49 | 8 pods: Content, SEO + AEO (`aeo` — E-E-A-T audit, citation tracking across 5 LLMs) + local (`local-seo-manager` — GBP/NAP/Map-Pack), CRO, Channels, Growth, Intelligence, Sales + `business-name-fit` (cross-cultural naming) + context foundation + orchestration router | [marketing-skill/](marketing-skill/) |
| **🚀 Productivity** | 12 | `capture` (brain-dump-to-action), `email` pair (inbox-setup + inbox-triage), `reflect` (journal), `handoff` (Matt Pocock-inspired), `andreessen` (market-first decision mode), `roast` (5-angle idea panel → GO/RESHAPE/KILL), `fable-goal` (ramble → autonomous /goal prompt), `weekly-review` (GTD loop with refusal gate), `deep-work` (time-blocking + shallow-work budget), `meetings` (cost gate + agenda + action items), `swedish-mentor` (CEFR-leveled Swedish learning paths) | [productivity/](productivity/) |
| **🎨 Marketing (top-level)** | 7 | `landing` — single-file HTML landing-page generator (4 design styles, GSAP patterns, brand palette validator); `linkedin` — organic LinkedIn presence with User Agreement §8.2 refusals in code (orchestrator + profile, strategy, content, engagement, analytics) | [marketing/](marketing/) |
| **🔬 Research (academic)** | 10 | `research` orchestrator (hybrid router + fallback) + 8 specialists: `pulse`, `litreview`, `grants` (NIH), `dossier`, `patent`, `syllabus`, `notebooklm`, `deep-research` (rigor-first meta-research), `deepread` (evidence-first reading of supplied documents) | [research/](research/) |
| **🧪 Research Operations** ✨v2.9.0 | 5 | Enterprise/cross-functional research: orchestrator + `clinical-research` (study design), `research-finance` (R&D program finance), `market-research` (sizing/survey/segmentation), `product-research` (user research) — each with onboarding + customization + opt-in autoresearch bridge | [research-ops/](research-ops/) |
| **📋 Project Management** | 9 | Senior PM, scrum master, Jira, Confluence, Atlassian admin, templates + bundled Atlassian Remote MCP | [project-management/](project-management/) |
| **🏥 Regulatory & QM** | 19 | ISO 13505, MDR 2017/745, FDA, ISO 27001, GDPR, SOC 2, CAPA, risk management, agent-decision-receipts (PQ-signed action receipts) | [ra-qm-team/](ra-qm-team/) |
| **🛡️ Compliance OS** | 9 | Compliance operating system — controls, evidence, audit-readiness workflows | [compliance-os/](compliance-os/) |
| **💼 C-Level Advisory** | 46 | Full C-suite (CEO/CTO/CFO/CMO/CRO/CPO/COO/CHRO/CISO/GC/CDO/CAIO/CCO/VPE) + executive mentor + orchestration + board meetings + culture & collaboration | [c-level-advisor/](c-level-advisor/) |
| **🎩 C-Level Agents (founder mode)** | 22 | 13 cs-* persona agents + 21 /cs:* commands — office hours, boardroom, strategic sprint pipeline, cross-eval, freeze | [c-level-agents/](c-level-agents/) |
| **📈 Business & Growth** | 5 | Customer success, sales engineer, revenue ops, contracts & proposals, BizDev toolkit | [business-growth/](business-growth/) |
| **🏭 Business Operations** | 7 | Orchestrator + process-mapper, vendor-management, capacity-planner, internal-comms, knowledge-ops, procurement-optimizer | [business-operations/](business-operations/) |
| **🤝 Commercial** | 8 | Orchestrator + pricing-strategist, deal-desk, partnerships-architect, channel-economics, commercial-policy, rfp-responder, commercial-forecaster | [commercial/](commercial/) |
| **💰 Finance** | 5 | Financial analyst (DCF, budgeting, forecasting), SaaS metrics coach, business investment advisor, stock-analysis (sector-relative fundamentals, 26 sector playbooks, forensic + IPO modes) | [finance/](finance/) |
| **🧬 Agent Launcher** ✨new | 6 | Build/launch/grade/schedule **Claude Managed Agents** in your own account — orchestrator (`context: fork` goal router) + `interview` + `stage-launch` + `grade-iterate` (bounded outcome loop) + `run-without-you` (cron deployment loop) + `wrap-up`. Every session starts with a goal; deterministic BYOK scaffolders (no API calls). Re-implements Anthropic's launch-your-agent (Apache-2.0) | [agent-launcher/](agent-launcher/) |
| **🔄 Loop Library** | 1 | `loop-library` — discover, find, audit/repair, adapt, and design bounded AI-agent loops; reads the live catalog from signals.forwardfuture.ai at runtime (vendored verbatim from [Forward-Future/loop-library](https://github.com/Forward-Future/loop-library)) | [loop-library/](loop-library/) |
| **📄 Markdown → HTML** | 5 | `markdown-html-orchestrator` (doctype router) + `design-system` (WCAG-AA brand tokens) + `md-document` (long-form) + `md-review` (2-col code review) + `md-slides` (single-file deck) — markdown-to-interactive-HTML converter | [markdown-html/](markdown-html/) |

---

## Personas

Pre-configured agent identities with curated skill loadouts, workflows, and distinct communication styles. Personas go beyond "use these skills" — they define how an agent thinks, prioritizes, and communicates.

| Persona | Domain | Best For |
|---------|--------|----------|
| [**Startup CTO**](agents/personas/startup-cto.md) | Engineering + Strategy | Architecture decisions, tech stack selection, team building, technical due diligence |
| [**Growth Marketer**](agents/personas/growth-marketer.md) | Marketing + Growth | Content-led growth, launch strategy, channel optimization, bootstrapped marketing |
| [**Solo Founder**](agents/personas/solo-founder.md) | Cross-domain | One-person startups, side projects, MVP building, wearing all hats |

**Usage:**
```bash
# Claude Code
cp agents/personas/startup-cto.md ~/.claude/agents/

# Any tool
./scripts/convert.sh --tool cursor  # Converts personas too
```

See [agents/personas/](agents/personas/) for details. Create your own with [TEMPLATE.md](agents/personas/TEMPLATE.md).

---

## Orchestration

A lightweight protocol for coordinating personas, skills, and agents on work that crosses domain boundaries. No framework required.

**Four patterns:**

| Pattern | What | When |
|---------|------|------|
| **Solo Sprint** | Switch personas across project phases | Side projects, MVPs, solo founders |
| **Domain Deep-Dive** | One persona + multiple stacked skills | Architecture reviews, compliance audits |
| **Multi-Agent Handoff** | Personas review each other's output | High-stakes decisions, launch readiness |
| **Skill Chain** | Sequential skills, no persona needed | Content pipelines, repeatable checklists |

**Example: 6-week product launch**
```
Week 1-2: startup-cto + aws-solution-architect + senior-frontend → Build
Week 3-4: growth-marketer + launch-strategy + copywriting + seo-audit → Prepare
Week 5-6: solo-founder + email-sequence + analytics-tracking → Ship and iterate
```

See [orchestration/ORCHESTRATION.md](orchestration/ORCHESTRATION.md) for the full protocol and examples.

---

## POWERFUL Tier

25 advanced skills with deep, production-grade capabilities:

| Skill | What It Does |
|-------|-------------|
| **agent-designer** | Multi-agent orchestration, tool schemas, performance evaluation |
| **agent-workflow-designer** | Sequential, parallel, router, orchestrator, and evaluator patterns |
| **rag-architect** | RAG pipeline builder, chunking optimizer, retrieval evaluator |
| **database-designer** | Schema analyzer, ERD generation, index optimizer, migration generator |
| **database-schema-designer** | Requirements → migrations, types, seed data, RLS policies |
| **migration-architect** | Migration planner, compatibility checker, rollback generator |
| **skill-security-auditor** | 🔒 Security gate — scan skills for malicious code before installation |
| **ci-cd-pipeline-builder** | Analyze stack → generate GitHub Actions / GitLab CI configs |
| **mcp-server-builder** | Build MCP servers from OpenAPI specs |
| **pr-review-expert** | Blast radius analysis, security scan, coverage delta |
| **api-design-reviewer** | REST API linter, breaking change detector, design scorecard |
| **api-test-suite-builder** | Scan API routes → generate complete test suites |
| **dependency-auditor** | Multi-language scanner, license compliance, upgrade planner |
| **observability-designer** | SLO designer, alert optimizer, dashboard generator |
| **performance-profiler** | Node/Python/Go profiling, bundle analysis, load testing |
| **monorepo-navigator** | Turborepo/Nx/pnpm workspace management & impact analysis |
| **changelog-generator** | Conventional commits → structured changelogs |
| **codebase-onboarding** | Auto-generate onboarding docs from codebase analysis |
| **runbook-generator** | Codebase → operational runbooks with commands |
| **git-worktree-manager** | Parallel dev with port isolation, env sync |
| **env-secrets-manager** | .env management, leak detection, rotation workflows |
| **incident-commander** | Incident response playbook, severity classifier, PIR generator |
| **tech-debt-tracker** | Codebase debt scanner, prioritizer, trend dashboard |
| **interview-system-designer** | Interview loop designer, question bank, calibrator |

---

## 🔒 Skill Security Auditor

New in v2.0.0 — audit any skill for security risks before installation:

```bash
python3 engineering/skill-security-auditor/scripts/skill_security_auditor.py /path/to/skill/
```

Scans for: command injection, code execution, data exfiltration, prompt injection, dependency supply chain risks, privilege escalation. Returns **PASS / WARN / FAIL** with remediation guidance.

**Zero dependencies.** Works anywhere Python runs.

---

## Recently Enhanced Skills

Production-quality upgrades added for:

- `engineering/git-worktree-manager` — worktree lifecycle + cleanup automation scripts
- `engineering/mcp-server-builder` — OpenAPI -> MCP scaffold + manifest validator
- `engineering/changelog-generator` — release note generator + conventional commit linter
- `engineering/ci-cd-pipeline-builder` — stack detector + pipeline generator
- `marketing-skill/prompt-engineer-toolkit` — prompt A/B tester + prompt version/diff manager

Each now ships with `scripts/`, extracted `references/`, and a usage-focused `README.md`.

---

## Usage Examples

### Architecture Review
```
Using the senior-architect skill, review our microservices architecture
and identify the top 3 scalability risks.
```

### Content Creation
```
Using the content-creator skill, write a blog post about AI-augmented
development. Optimize for SEO targeting "Claude Code tutorial".
```

### Compliance Audit
```
Using the mdr-745-specialist skill, review our technical documentation
for MDR Annex II compliance gaps.
```

---

## Python Analysis Tools

580 CLI tools ship with the skills (all verified, stdlib-only):

```bash
# SaaS health check
python3 finance/saas-metrics-coach/scripts/metrics_calculator.py --mrr 80000 --customers 200 --churned 3 --json

# Brand voice analysis
python3 marketing-skill/content-production/scripts/brand_voice_analyzer.py article.txt

# Tech debt scoring
python3 c-level-advisor/cto-advisor/scripts/tech_debt_analyzer.py /path/to/codebase

# RICE prioritization
python3 product-team/product-manager-toolkit/scripts/rice_prioritizer.py features.csv

# Security audit
python3 engineering/skill-security-auditor/scripts/skill_security_auditor.py /path/to/skill/

# Landing page (TSX + Tailwind)
python3 product-team/landing-page-generator/scripts/landing_page_scaffolder.py config.json --format tsx
```

---

## Related Projects

| Project | Description |
|---------|-------------|
| [**Claude Code Skills & Agents Factory**](https://github.com/alirezarezvani/claude-code-skills-agents-factory) | Methodology for building skills at scale |
| [**Claude Code Tresor**](https://github.com/alirezarezvani/claude-code-tresor) | Productivity toolkit with 60+ prompt templates |
| [**Product Manager Skills**](https://github.com/Digidai/product-manager-skills) | Senior PM agent with 6 knowledge domains, 12 templates, 30+ frameworks — discovery, strategy, delivery, SaaS metrics, career coaching, AI product craft |
| [**toprank**](https://github.com/nowork-studio/toprank) | 9 SEO and Google Ads skills for Claude Code — connects Google Search Console, PageSpeed Insights, and Google Ads API; ships meta tag, schema markup, and keyword bid fixes to source or CMS. MIT, 107 stars |
| [**LinkedIn Skills**](https://github.com/sergebulaev/linkedin-skills) | 11 LinkedIn skills for Claude Code and Codex: post writer with 16 tested hook formulas, humanizer that scrubs AI tells, pre-publish audit, comment and reply drafting, hook extractor, content planner, profile optimizer, engager analytics, and thread monitoring. MIT |

---

## FAQ

**How do I install Claude Code plugins?**
Add the marketplace with `/plugin marketplace add alirezarezvani/claude-skills`, then install any skill bundle with `/plugin install <name>@claude-code-skills`.

**Do these skills work with OpenAI Codex / Cursor / Windsurf / Aider / Mistral Vibe?**
Yes. Skills work natively with 13 tools: Claude Code, OpenAI Codex, Gemini CLI, OpenClaw, Hermes Agent, Mistral Vibe, Cursor, Aider, Windsurf, Kilo Code, OpenCode, Augment, and Antigravity. Hermes Agent and Mistral Vibe both use the same agentskills.io SKILL.md standard — run `python scripts/sync-hermes-skills.py` or `./scripts/vibe-install.sh` to install. For other tools run `./scripts/convert.sh --tool all` then `./scripts/install.sh --tool <name>`. See [Multi-Tool Integrations](https://alirezarezvani.github.io/claude-skills/integrations/) for details.

**Will updating break my installation?**
No. We follow semantic versioning and maintain backward compatibility within patch releases. Existing script arguments, plugin source paths, and SKILL.md structures are never changed in patch versions. See the [CHANGELOG](CHANGELOG.md) for details on each release.

**Are the Python tools dependency-free?**
Yes. All 727 Python tools use the standard library only — zero pip installs required. Every skill's CLI entry point is verified to run with `--help` (most skills ship one script per tool; a few, like the vendored `engineering/skillopt-sleep` engine, ship a multi-module package behind a single `python -m` entry point). A few tools — `engineering/book-to-skill`'s document extractors — can *optionally* use third-party parsers for higher-fidelity output, but every format falls back to a standard-library parser and nothing is installed implicitly.

**How do I create my own Claude Code skill?**
Each skill is a folder with a `SKILL.md` (frontmatter + instructions), optional `scripts/`, `references/`, and `assets/`. See the [Skills & Agents Factory](https://github.com/alirezarezvani/claude-code-skills-agents-factory) for a step-by-step guide.

---

## Contributing

We welcome contributions! See [CONTRIBUTING.md](CONTRIBUTING.md) for guidelines.

**Quick ideas:**
- Add new skills in underserved domains
- Improve existing Python tools
- Add test coverage for scripts
- Translate skills for non-English markets

---

## License

MIT — see [LICENSE](LICENSE) for details.

---

## Star History

[Star History Chart](https://www.star-history.com/?type=date&repos=alirezarezvani%2Fclaude-skills)

---

**Built by [Alireza Rezvani](https://alirezarezvani.com)** · [Medium](https://alirezarezvani.medium.com) · [Twitter](https://twitter.com/nginitycloud)
