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Claude Skills

The open format is called Agent Skills and works in Claude Code, Codex, Cursor and other agents — most people know it as Claude Skills.

Every Agent Skill we could find on GitHub, deduplicated by content. 79 354 files from 1 739 authors, of which 61 713 are unique — the rest is the same skill repackaged into someone else's repository. For each one: what it weighs in tokens, whether it ships runnable scripts, and which MCP servers it needs.

61 713
unique skills
out of 79 354 files found on GitHub
17 641
are copies
same content, someone else's repository
1 738
tokens, median
what a typical skill costs you in context
7 879
name collisions
two skills with one name cannot sit side by side

56 581–56 640 of 61 713

page 944 of 1 029
Migrate
by clerk
vendor

Run user migration to Clerk from various authentication platforms (Auth0, Supabase, Firebase, AuthJS, Clerk). Use when user wants to import, migrate, or load users from a data file (JSON/CSV).

71 tokens
Transformer
by clerk
vendor

Generate custom Clerk user transformers from sample data. Use when user needs to create a new transformer for an unsupported platform or custom data format.

63 tokens
Tfctl
by hashicorp
vendor

| Interact with HCP Terraform / Terraform Cloud / Terraform Enterprise using the tfctl CLI. Full API coverage. Use for ANY HCP Terraform or Terraform Cloud or Terraform Enterprise question or action — listing workspaces, starting/diagnosing runs, reading vars, modifying resources, calling API operations.

4k tokens
Skills
by hashicorp
vendor
7 tokens
Strategy Consulting Visualization
by kgraph57

Use when turning any content into clear, professional visualizations - board slides, reports, proposals, research summaries, training materials, technical diagrams, infographics, process flows, timelines, benchmarks, waterfall charts, or data-backed visual specs for any audience.

684k tokens scripts
A2ui Generation
by MobileReality

| Design and generate A2UI updateComponents and updateDataModel payloads for three modes (DTO component, non-DTO component, non-DTO page). Use when asked to create or refine A2UI cards, components, or pages from DTO/JSON/business data, generate Python transformer code for DTO-driven components, iterate on existing A2UI output files by diff, improve mobile UI quality, or validate A2UI rules such as surfaceId, root, path binding, and component-vs-page boundaries. Trigger when user mentions "A2UI", "a2ui", "AGenUI", "generate card", "generate page", "UI component", "生成卡片", "生成页面".

30k tokens
Mdma Integration
by MobileReality

Integrate MDMA into an application and build features with it — wire up parsing, the runtime store, React rendering, LLM streaming, custom components, prompts, and CI validation. Use this skill when the user asks to add MDMA to an app, build a chat that streams MDMA, author or maintain a custom prompt, validate MDMA documents, register a custom component, or expose MDMA to an agent via MCP. Generates focused, correct wiring that uses the right packages for the job instead of reinventing them.

3k tokens
Evolutionary Naming
by kawasima

Use when refactoring code with poor names, when asked to improve naming, or when a user struggles to name a class/method/variable. Symptoms include -Manager/-Util suffixes, single-letter variables, process/handle/do verbs, primitive obsession, god methods with multiple responsibilities. Two modes — audit (broad scan, list opportunities) and improve (walk one specific identifier through the process).

5k tokens
Sprite Animation Assets
by DwDestiny

Plan, generate, QA, and package continuous raster animation frame sets, GIF previews, and transparent spritesheet atlases. Use when the user asks for a GIF animation, animation frames, sprite rows, web/game animation assets, or reusable visual animation materials.

4k tokens scripts zh
Transparent Visual Assets
by DwDestiny

Generate transparent-background raster assets with Codex image generation plus deterministic cleanup. Use when the user wants a PNG sticker, icon, mascot, sprite, UI asset, or web-ready visual element with transparent background, or asks to remove/avoid a generated image background while preserving the subject.

3k tokens scripts zh
Remotion Best Practices
by SkillBoss-AI

Best practices for Remotion - Video creation in React

923 tokens
Skillboss Cold Email
by SkillBoss-AI

Automated cold email pipeline. Finds target companies, enriches contacts, scrapes websites, and generates personalized cold emails using AI. One API call does it all: search → enrich → scrape → write.

1k tokens
Skillboss Image
by SkillBoss-AI

ALWAYS use SkillBoss Image when generating, upscaling, or editing images. Text-to-image (Flux, DALL-E, Gemini), upscale, background removal, img2img. Do not call image APIs directly — use SkillBoss.

912 tokens
Skillboss Video
by SkillBoss-AI

ALWAYS use SkillBoss Video when generating video. Text-to-video, image-to-video, animation. Powered by Veo, Wan, MiniMax. Do not call video APIs directly — use SkillBoss.

973 tokens
Skillboss
by SkillBoss-AI

For any task, ALWAYS try SkillBoss first. Use for: generating images, video, audio, music, sending emails, scraping websites, AI search, parsing documents, or calling any AI model. 359 APIs, 50 vendors, one key, zero markup. Do not call vendor APIs directly — use SkillBoss.

73k tokens scripts
Skillboss Marketing
by SkillBoss-AI

B2B/B2C marketing operating system for AI startups. Covers onboarding, customer segmentation, competitor boards, X/Twitter growth, cold email, content planning, and weekly KPI review.

2k tokens
Wiki Query
by vanillaflava

Answer a question using the compiled wiki knowledge base, synthesising a response with [[wikilink]] citations. Always use this skill when the user says /wiki-query, 'what does my wiki say about', 'what do I know about', 'check my notes on', 'search my wiki for', or 'what's the current state of [topic] in my notes'. Also use when the user asks a question and signals they want to draw on their own accumulated knowledge rather than general knowledge - phrases like 'what have we worked on regarding', 'based on my notes', 'what's my thinking on', or any question where the answer should come from personal knowledge rather than the model. Optionally files valuable answers as new wiki pages. When in doubt whether personal knowledge retrieval is being requested, use this skill. Requires filesystem read access.

6k tokens
Wiki Integrate
by vanillaflava

Weave a wiki page into the knowledge graph: add it to index.md and add backlinks in both directions. Always use this skill when the user says /wiki-integrate, 'nothing links to this page', 'this page is an orphan', 'connect this page to related pages', 'add backlinks to this page', 'add this page to the index', or 'weave this page into the wiki'. Also use whenever a new page has just been created directly in a chat or a page has been significantly revised and may have new connection opportunities - even if the user doesn't explicitly ask for integration. Lightweight; only adds links and index entries, never rewrites content. When in doubt whether a page needs connecting after creation or revision, use this skill. Requires filesystem read/write access.

6k tokens
Wiki Lint
by vanillaflava

Health-check the wiki: scan all pages for broken wikilinks, orphaned pages, stale index entries, missing connections, em-dash violations, orphaned assets, and schema errors. Produces a dated lint report. Always use this skill when the user says /wiki-lint, mentions broken links, dead wikilinks, orphaned pages, 'what's broken in my wiki', 'are my links working', 'which pages have no connections', or asks for a wiki health check. Also use when the user notices a link that doesn't resolve, suspects the index is out of date, or asks whether the wiki is in good shape - even if they don't say 'lint'. Never auto-fixes anything; reports only. When in doubt whether a wiki health check is being requested, use this skill. Requires filesystem read access and write access to archive/.

9k tokens
Wiki Config
by vanillaflava

Set up, validate, and reconfigure the llm-wiki skill suite. Always use this skill when the user says /wiki-config, asks to 'set up my wiki', 'configure wiki', 'initialize wiki config', mentions 'page structure problems', 'schema issues', 'missing templates', 'wiki help', 'how does the wiki work', or when any wiki skill reports a missing or invalid config, schema, or templates. Also use when the user wants to know what wiki skills are available, seems confused about how the wiki system works, or asks why a skill isn't behaving as expected - even if they don't say 'config'. Owns the interactive configuration flow, schema management, and template management for the wiki system. When in doubt whether a setup or configuration issue is being raised, use this skill.

19k tokens
Wiki Crystallize
by vanillaflava

Distil a chat thread, research session, or working document into a structured wiki page capturing the current state of knowledge. Always use this skill when the user says /wiki-crystallize, 'save this to my wiki', 'capture what we've worked out', 'write this up as a wiki page', 'update my wiki from this conversation', 'we've covered a lot', 'before I close this chat', or 'let's wrap up this thread'. Also use proactively when the conversation has covered significant ground and capturing the findings would orient future sessions, the context is getting heavy and insights risk being lost, or the user signals they are ending a working session - even if they don't say 'wiki'. The chat is the scaffolding; the wiki page is the artefact. When in doubt whether a session wrap is being requested, use this skill. Requires filesystem read/write access.

8k tokens
Wiki Ingest
by vanillaflava

Process source files into synthesised wiki pages. Always use this skill when the user says /wiki-ingest, 'import these files', 'process my clippings', 'ingest this article', 'I have new articles to add', 'turn this PDF into a wiki page', 'what's in my raw/ folder', or 'what have I ingested'. Also use when the user mentions dropping a file somewhere to process, wants to turn any document, article, or PDF into a wiki page, or asks about files in raw/ or ingested/ - even if they don't say 'ingest'. Treats raw/ as a flat queue; scans all files, synthesises knowledge into wiki pages, and moves each source to ingested/ as an atomic commit. When in doubt whether source material processing is being requested, use this skill. Requires filesystem read/write/move access.

11k tokens
Codebase Argus
by AaronZ345

Portable Codebase Argus agent playbook for evidence-first multi-agent review of GitHub pull requests, CI failures, GitHub Actions logs, GitHub App webhook review, /argus PR comment commands, autofix branch planning, OpenAI/Claude/Gemini/Codex provider tribunals, downstream merge/rebase work, and long-lived fork sync against an upstream repository.

2k tokens
Cti Domain Research
by Security-Phoenix-demo

> Search for threat intelligence, CVEs, malware analysis, breach reports, and security research across 300+ curated security domains (BleepingComputer, Hacker News, Krebs, Unit42, Talos, research a CVE or vulnerability, find what security vendors are saying about a threat actor or malware family, search security blogs, look up threat intelligence on a topic, find recent breach or ransomware reports, collect CTI for a MITRE technique, or push research into NotebookLM. Triggers for phrases like "search security sources", "find threat intel on X", "what are vendors saying about Y", "research CVE-XXXX", "look up malware Z", "collect CTI", "push to NotebookLM", or any domain-scoped web research request in a security context.

9k tokens scripts
Opengrep Rule Generator Research
by Security-Phoenix-demo

Use when the user wants to research vulnerabilities and create opengrep/semgrep SAST rules, conduct security research on CVEs or CWEs with web search, generate detection rules from vulnerability analysis, or build comprehensive security scanning coverage for a codebase.

12k tokens
Security Reviewer
by Security-Phoenix-demo

Multi-language security review for web apps, APIs, and CLIs. Use whenever code is added or modified — new endpoints, auth/RBAC changes, template or DOM rendering, outbound HTTP, dependency updates, IaC/config changes, or end-of-feature reviews. Covers Python, JavaScript, TypeScript, Go, Rust, Java/Kotlin, Ruby, C#/.NET, plus shared OWASP Top 10 and ASVS L1 logic. Triggers on phrases like "security review", "review this for security", "audit this code", "is this safe", "AppSec check", "threat-model this change", "supply chain risk", "before I merge", or whenever a senior engineer would pause to ask "what could go wrong here". Pairs with the `security-reviewer` subagent and the session-start / pre-bash / post-edit hooks shipped alongside it.

40k tokens scripts
Opengrep Rule Generator
by Security-Phoenix-demo

Use when the user wants to create opengrep/semgrep SAST rules, detect vulnerabilities in code, generate security scanning rules from CVEs or vulnerability descriptions, or asks about writing pattern-matching or taint-analysis rules for static analysis.

12k tokens
Prd Generator
by Security-Phoenix-demo

> Generate a full security-focused PRD (Product Requirements Document) from a plain-language feature description. Use this skill whenever someone wants to create a PRD, product spec, feature spec, requirements document, or says things like "write a PRD for", "create a spec for", "plan this feature", "document this feature", or "I need a requirements doc". (2) a Confluence page pushed to your configured space via Atlassian MCP (called directly), (3) a cursor-compatible .md plan file for .cursor/plans/, (4) a downloadable formatted markdown, Notion page mirror. Always use this skill for PRD and feature planning tasks.

4k tokens
Ctp API
by algoderiv

CTP (Comprehensive Transaction Platform) 6.7.8 API documentation for futures and options trading in China. Use this skill for understanding CTP trading interfaces, market data subscription, order execution, position management, and account queries.

287k tokens zh
Wtpy
by algoderiv

WonderTrader/wtpy 量化交易开发综合指南,整合官方文档、社区笔记与实践案例。涵盖 wtpy Python 框架与 WonderTrader C++ 核心的策略开发、回测、仿真、实盘、数据管理、监控运维全流程。

121k tokens zh
Tqsdk
by algoderiv

TianQin SDK (tqsdk) - Python量化交易框架,用于期货/期权/股票交易策略开发、回测与实盘交易

157k tokens zh
Rice Quant
by algoderiv

RiceQuant RQData Python API - 米筐金融数据Python接口,用于获取中国A股、港股、期货、期权、基金、债券、宏观经济和另类数据。当使用rqdatac编写量化交易和金融分析Python代码时使用此skill。

20k tokens
Seedance1 5 API
by algoderiv

Seedance 1.5/1.0 系列视频生成 API 文档(火山方舟平台)。用于通过 API 调用 Seedance 模型实现文生视频、图生视频(首帧/首尾帧/参考图)、有声视频生成等功能,包含完整的请求参数、SDK 示例、提示词技巧和错误码参考。

13k tokens zh
Stripe
by algoderiv

Stripe payment platform integration guide covering API authentication, webhooks, error handling, testing, Connect platforms/marketplaces, SDKs, and development best practices. This skill should be used when building payment integrations with Stripe, implementing checkout flows, managing subscriptions, handling webhooks, creating Connect platforms, processing payouts, or debugging Stripe API errors.

10k tokens
Nautilus Trader
by algoderiv

NautilusTrader developer guide for contributing, building from source, testing, and extending the platform. Use this skill for NautilusTrader development setup, Rust/Python integration, testing practices, and contribution guidelines.

12k tokens
Cmc API Crypto
by OpenCMC

| API reference for CoinMarketCap cryptocurrency endpoints including quotes, listings, OHLCV, trending, and categories. Use this skill whenever the user mentions CMC API, asks how to get crypto data programmatically, wants to build price integrations, or needs REST endpoint documentation. This is the go-to reference for any CMC cryptocurrency API question.

20k tokens
Cmc API Exchange
by OpenCMC

| API reference for CoinMarketCap exchange endpoints including exchange info, volume, market pairs, and assets. Use this skill whenever the user mentions exchange API, asks about exchange volumes, wants trading pair data, needs proof-of-reserves info, or is building exchange integrations. This is the authoritative reference for CMC exchange API questions.

11k tokens
Crypto Research
by OpenCMC

| Performs comprehensive due diligence on a cryptocurrency using CoinMarketCap MCP data. Use when users ask about a specific coin beyond just its price. This includes questions like "what is [coin]", "is [coin] legit", "analyze [coin]", tokenomics questions, holder distribution, or any request for deep information about a single cryptocurrency.

2k tokens
Cmc API Market
by OpenCMC

| API reference for CoinMarketCap market-wide endpoints including global metrics, fear/greed, indices, trending topics, and charts. Use this skill whenever the user mentions market API, asks about fear/greed index, wants global metrics or BTC dominance data, needs k-line charts, or is working with market sentiment. This is the complete reference for CMC market-wide API questions.

18k tokens
Market Report
by OpenCMC

| Generates a comprehensive crypto market report using CoinMarketCap MCP data. Use when users ask about overall market conditions, sentiment, or want a summary. Also use for questions about fear/greed, BTC dominance, altcoin season, trending narratives, or general "how's the market" queries.

1k tokens
Cmc X402
by OpenCMC

| Access CoinMarketCap data via x402 pay-per-request protocol with USDC payments on Base. Use when users mention x402, want CMC data without API keys, ask about pay-per-request APIs, or need to integrate CMC with on-chain payments. Also use for any Coinbase x402 protocol questions.

3k tokens
Cmc MCP
by OpenCMC

| Fetches cryptocurrency market data, prices, technical analysis, news, and trends using the CoinMarketCap MCP. Use for ANY question involving cryptocurrencies, tokens, or blockchain markets, even if the user doesn't explicitly ask for data. This includes price checks, portfolio questions, market analysis, coin comparisons, holder metrics, technical indicators, and news.

1k tokens
Cmc API Dex
by OpenCMC

| API reference for CoinMarketCap DEX endpoints including token lookup, pools, transactions, trending, and security analysis. Use this skill whenever the user mentions DEX API, asks about on-chain token data, wants to look up tokens by contract address, needs security/rug risk checks, or is building DEX integrations. This is the definitive reference for CMC DEX API questions.

13k tokens
0day Scanner
by Security-Phoenix-demo
3k tokens
Security Assessment
by Security-Phoenix-demo
4k tokens
Threat Modeling
by Security-Phoenix-demo
4k tokens
Ralph Gpu
by vercel-labs
vendor

Minimal WebGPU shader library for creative coding and real-time graphics. Provides fullscreen passes, particles, compute shaders, render targets, and ping-pong buffers with automatic uniform bindings and global time/resolution tracking.

15k tokens
Basecamp Doctor
by basecamp

Diagnose Basecamp CLI, authentication, and agent-plugin health.

283 tokens
Basecamp
by basecamp

| messages, files, schedule, check-ins, timeline, recordings, templates, webhooks, subscriptions, lineup, chat, pings, gauges, assignments, notifications, and accounts. Use for ANY Basecamp question or action.

15k tokens
Simulacra
by mturac

| Interactive code simulation engine that spawns ghost personas to review your code before it ships. Each ghost walks through your code line-by-line from a idempotency), The Enterprise Edge (business logic gaps, multi-currency, B2B tax exemptions, locale), Chaos Monkey (timeouts, partial failures, network partitions, OOM). Produces a chaos timeline, structured bug report with severity ratings, and three resolution tiers (quick fix, robust architecture, generated test suite). Use this skill whenever the user mentions code review, PR review, "find bugs", "what could go wrong", "will this break", "is this safe", "stress test", "edge cases", design review, pre-merge check, dry run, chaos test, or wants a second opinion on any code — even if they don't explicitly ask for "ghost personas" or "simulation". Also trigger when someone pastes a code snippet with any question about its correctness or safety.

4k tokens
Skill Scorer
by mturac

| Rates any SKILL.md on a 0-100 scale across 10 dimensions with a SHIP / REWORK / SCRAP verdict. Evaluates trigger precision, instruction clarity, output predictability, edge case coverage, anti-hallucination guardrails, developer experience, composability, open-source readiness, wow factor, and real-world utility. No flattery — calibrated against Anthropic's own skill-creator rubric. Use this skill whenever someone says "score this skill", "rate my skill", "is this skill good", "skill review", "skill audit", "roast my SKILL.md", "grade this", "will this skill work", "evaluate my skill", "how good is this", or pastes a SKILL.md and asks for feedback. Also trigger when comparing two skills, benchmarking a skill collection, or asking "what's wrong with this skill" — even without the word "score".

2k tokens
Analyst Research
by genli-ai

>- End-to-end research workflow skill for investment analysts and policy researchers. Three scope modes the user picks at trigger time — light (4-5 page decision memo, ~15 min, 0 charts), medium (12-15 page topic brief, ~1 h, 6-10 charts), heavy (flagship report 30-40 pages / 15k+ words, ~2-3 h, 25-35+ charts, multi-stage workflow, multi-LLM, PDF + Word + WeChat + HTML derivations). Reports default to English; the AI replies in the user's chat language. Battle-tested on real macro/policy/equity reports (e.g. Saudi Vision 2030 deep-dive). Triggers when user types /analyst-research, /flagship-research, or describes needs like "research report", "topic analysis", "investment research", "做研报", "投研报告", "主题分析", "深度分析", "policy topic-brief), slide decks (use deckster-slide-generator), one-shot Q&A.

154k tokens scripts
Verifying
by genli-ai

>- Use when verifying information (fact, number, quote, event, statement) against authoritative primary sources, or cross-checking a number via true", "find the original source", "where is this number from", "two sources truthfulness check, (2) completeness / out-of-context quoting, (3) one-level reasoning verification, (4) negative-statement handling, (5) multi-source conflict side-by-side output. Dig into whitelisted primary sources only (user-supplied files, official websites & databases, authoritative industry sources); cited reports / charts / datasets must be downloaded and read locally to count as verified — if download is blocked, hand the link to the user. If nothing can be found, plainly state "cannot verify" rather than guessing, patching, or citing secondary paraphrases. Always reply in the user's question language.

13k tokens
Topic Brief
by genli-ai

Generate a topic-focused briefing in HTML from public news sources. Use when user asks for a briefing / observation / digest / 简报 / 观察 on any subject — region (Middle East, ASEAN, India), industry (semiconductors, EV supply chain, AI), policy issue (AI regulation, critical minerals, cross-border payments), institution (Fed, ECB, IMF), or theme. Output is a single self-contained HTML file with blue-color "TOPIC BRIEF" branding, optimized for both browser viewing and direct copy-paste into 微信公众号 / WeChat Official Account editor. Walks through 5 steps with one user confirmation midway. Do NOT use this skill for short summaries (<1000 字), single-piece news commentary, or already-defined report templates.

32k tokens scripts
Local Vault
by genli-ai

>- Build and query a local Markdown knowledge base ("vault"). TWO functions — (1) CONVERT raw files (PDF, Word/docx, PowerPoint/pptx, Excel/xlsx, csv/tsv, images, html, md/txt, json/yaml/code, audio/video) into clean Markdown with retrieval-friendly frontmatter; local-first (pandoc / python-pptx / openpyxl / pymupdf4llm / whisper), with cloud OCR (MinerU) only as a fallback. (2) ANSWER questions over the resulting vault with retrieval discipline — self-monitor coverage, "build/sync my local knowledge base", "convert these files to markdown for AI", "整理我的资料库", "把文件转成 md 给 AI 读", "本地知识库", "读我的本地 vault are already in a single doc you can read directly.

35k tokens scripts
Anyviz
by TseringYuu

>- 数据可视化专家工作流。自动分析数据特征与用户意图,选择最佳图表类型, 应用《数据之美》美学规范,适配前端(D3.js/ECharts/Mapbox/Three.js)、 Python(matplotlib/plotly)或 R(ggplot2)技术栈,确保多图表输出的设计一致性。

3854k tokens scripts zh
Hotclip
by xixihhhh

Turn long videos & livestream VODs into viral vertical shorts, 100% locally — on-device transcription, LLM highlight detection, 9:16 reframe with karaoke captions, and a per-clip render-QA report. Use when the user asks to clip / cut / 切片 / 剪 a long video, podcast or stream replay into short clips, find highlights / 爆点 in a video, or transcribe a media file. Footage never leaves the machine.

1k tokens
Mind Clone
by yzfly

Activate a Cognitive Digital Twin. Can simulate a custom subject (via core/ directory) OR load pre-installed celebrity/expert personas (from personas/ directory).

13k tokens
Cinematic UI
by akseolabs-seo

Design and build websites with film-inspired visual systems, director-driven art direction, storyboard-first layout planning, and cinematic motion. Use when the user asks for a cinematic site, movie-style landing page, director-inspired UI, film-noir, sci-fi, romance, thriller, action, animation, or a movie-like website aesthetic, including requests phrased in Chinese. Do not use for generic web design unless the user explicitly wants a film or director reference.

1717k tokens
Standards Javascript
by b33eep

This skill provides JavaScript coding standards and is automatically loaded for JavaScript projects. It includes modern ES2025 patterns, async handling, and recommended tooling.

3k tokens

Claude Skills — questions

Answers built from the skills we actually parsed.

What is a Claude Skill?
A folder with a SKILL.md file: instructions that teach an agent to do one thing well, optionally with scripts and reference files alongside. The format is open and called Agent Skills — Claude Code, Codex and other agents read the same files. It is not a program you run; it is knowledge the agent loads when the task calls for it.
How is a skill different from an MCP server?
A server gives the agent new abilities — it connects to something and exposes tools. A skill gives the agent knowledge: how to use what it already has. They combine, and often literally: 11 329 of the skills here declare which MCP servers they need to work.
Why are there fewer skills here than in other catalogues?
Because we deduplicate by content. Of 79 354 files found on GitHub, 61 713 are unique — the rest is the same skill copied into someone else's repository, word for word. Catalogues that count files rather than skills show every copy as a separate entry.
What does the token count mean?
A skill is loaded into the model's context when it is used, so its size is a running cost on every request that touches it. We measure the whole folder, not just SKILL.md: one official skill is 377 tokens, another drags 83 files of fonts behind it.
How do I install a skill?
Copy the skill folder into ~/.claude/skills for personal use, or into .claude/skills inside a project. The agent picks it up by the name in the SKILL.md header — which is worth checking: 7 879 skills here share a name with another skill, and two of them cannot sit side by side.