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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. 86 696 files from 2 113 authors, of which 68 413 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.

68 413
unique skills
out of 86 696 files found on GitHub
18 283
are copies
same content, someone else's repository
1 744
tokens, median
what a typical skill costs you in context
8 409
name collisions
two skills with one name cannot sit side by side

3 901–3 960 of 68 413

page 66 of 1 141
Gate Exchange Futures
by ComeOnOliver
×1

The USDT perpetual futures trading function of Gate Exchange: open position, close position, cancel order, amend order. Trigger phrases: open position, close position, cancel order, amend order, reverse, close all.

2.5k tokens
Gate Exchange Marketanalysis
by ComeOnOliver
×1

The market analysis function of Gate Exchange — liquidity, momentum, liquidation, funding arbitrage, basis, manipulation risk, order book explainer, slippage simulation. Use when the user asks about liquidity, depth, slippage, buy/sell pressure, liquidation, funding rate arbitrage, basis/premium, manipulation risk, order book explanation, or slippage simulation (e.g. market buy $X slippage). Trigger phrases: liquidity, depth, slippage, momentum, buy/sell pressure, liquidation, squeeze, funding rate, arbitrage, basis, premium, manipulation, order book, spread, slippage simulation.

1.8k tokens
Gate Exchange Spot
by ComeOnOliver
×1

Gate spot trading and account operations skill. Use this skill whenever the user asks to buy/sell crypto, check account value, cancel/amend spot orders, place conditional buy/sell plans, verify fills, or perform coin-to-coin swaps in Gate spot trading. Trigger phrases include 'buy coin', 'sell coin', 'monitor market', 'cancel order', 'amend order', 'break-even price', 'rebalance', 'spot trading', 'buy/sell', or any request that combines spot order execution with account checks.

3.7k tokens
Gate MCP Installer
by ComeOnOliver
×1

One-click installer and configurator for Gate MCP (mcporter) in OpenClaw. Use when the user wants to (1) Install mcporter CLI tool, (2) Configure Gate MCP server connection, (3) Verify Gate MCP setup, or (4) Troubleshoot Gate MCP connectivity issues.

502 tokens scripts
Java Unit Test
by ComeOnOliver
×1

为 Java 项目生成自动化单元测试(JUnit 5 + Mockito)。当用户要求编写单元测试、生成测试用例或提升测试覆盖率时使用。

1.4k tokens zh
Skill From Masters
by ComeOnOliver
×1

Help users create high-quality skills by discovering and incorporating proven methodologies from domain experts. Use this skill BEFORE skill-creator when users want to create a new skill - it enhances skill-creator by first identifying expert frameworks and best practices to incorporate. Triggers on requests like "help me create a skill for X" or "I want to make a skill that does Y". This skill guides methodology selection, then hands off to skill-creator for the actual skill generation.

1.6k tokens
Convex Create Component
by ComeOnOliver
×1

Designs and builds Convex components with isolated tables, clear boundaries, and app-facing wrappers. Use this skill when creating a new Convex component, extracting reusable backend logic into a component, building a third-party integration that owns its own tables, packaging Convex functionality for reuse, or when the user mentions defineComponent, app.use, ComponentApi, ctx.runQuery/runMutation across component boundaries, or wants to separate concerns into isolated Convex modules.

2.6k tokens
Convex Migration Helper
by ComeOnOliver
×1

Plans and executes safe Convex schema and data migrations using the widen-migrate-narrow workflow and the @convex-dev/migrations component. Use this skill when a deployment fails schema validation, existing documents need backfilling, fields need adding or removing or changing type, tables need splitting or merging, or a zero-downtime migration strategy is needed. Also use when the user mentions breaking schema changes, multi-deploy rollouts, or data transformations on existing Convex tables.

1.5k tokens
Convex Performance Audit
by ComeOnOliver
×1

Audits and optimizes Convex application performance across hot-path reads, write contention, subscription cost, and function limits. Use this skill when a Convex feature is slow or expensive, npx convex insights shows high bytes or documents read, OCC conflict errors or mutation retries appear, subscriptions or UI updates are costly, functions hit execution or transaction limits, or the user mentions performance, latency, read amplification, or invalidation problems in a Convex app.

1.9k tokens
Convex Quickstart
by ComeOnOliver
×1

Initializes a new Convex project from scratch or adds Convex to an existing app. Use this skill when starting a new project with Convex, scaffolding with npm create convex@latest, adding Convex to an existing React, Next.js, Vue, Svelte, or other frontend, wiring up ConvexProvider, configuring environment variables for the deployment URL, or running npx convex dev for the first time, even if the user just says "set up Convex" or "add a backend.

2.7k tokens
Convex Setup Auth
by ComeOnOliver
×1

Sets up Convex authentication with user management, identity mapping, and access control. Use this skill when adding login or signup to a Convex app, configuring Convex Auth, Clerk, WorkOS AuthKit, Auth0, or custom JWT providers, wiring auth.config.ts, protecting queries and mutations with ctx.auth.getUserIdentity(), creating a users table with identity mapping, or setting up role-based access control, even if the user just says "add auth" or "make it require login.

1.8k tokens
Claude Settings Audit
by ComeOnOliver
×1

Analyze a repository to generate recommended Claude Code settings.json permissions. Use when setting up a new project, auditing existing settings, or determining which read-only bash commands to allow. Detects tech stack, build tools, and monorepo structure.

2.1k tokens
Iterate Pr
by ComeOnOliver
×1

Iterate on a PR until CI passes. Use when you need to fix CI failures, address review feedback, or continuously push fixes until all checks are green. Automates the feedback-fix-push-wait cycle.

1k tokens
Shadcn UI
by ComeOnOliver
×1

Complete shadcn/ui component library guide including installation, configuration, and implementation of accessible React components. Use when setting up shadcn/ui, installing components, building forms with React Hook Form and Zod, customizing themes with Tailwind CSS, or implementing UI patterns like buttons, dialogs, dropdowns, tables, and complex form layouts.

9.7k tokens
React Components
by ComeOnOliver
×1

Converts Stitch designs into modular Vite and React components using system-level networking and AST-based validation.

697 tokens scripts
Remotion
by ComeOnOliver
×1

Generate walkthrough videos from Stitch projects using Remotion with smooth transitions, zooming, and text overlays

3.2k tokens scripts
Stitch Loop
by ComeOnOliver
×1

Teaches agents to iteratively build websites using Stitch with an autonomous baton-passing loop pattern

1.9k tokens
Gws Calendar
by ComeOnOliver
×1

Google Calendar: Manage calendars and events.

1.1k tokens
Gws Docs
by ComeOnOliver
×1

Read and write Google Docs.

391 tokens
Gws Drive
by ComeOnOliver
×1

Google Drive: Manage files, folders, and shared drives.

3.3k tokens
Gws Gmail
by ComeOnOliver
×1

Gmail: Send, read, and manage email.

503 tokens
Gws Sheets
by ComeOnOliver
×1

Google Sheets: Read and write spreadsheets.

650 tokens
Port Allocator
by ComeOnOliver
×1

Automatically allocate and manage development server ports, avoiding port conflicts between multiple Claude Code instances

1.7k tokens
Share Skill
by ComeOnOliver
×1

Automatically share skills, migrate local skills to code repositories, open source skills, skill version management, configure git remote

14k tokens scripts
Skill I18n
by ComeOnOliver
×1

Translate SKILL.md and README.md files into multiple languages for sharing skills internationally

2.2k tokens
Skill Permissions
by ComeOnOliver
×1

Skill permission analysis, one-time authorization, analyze skill permissions, batch authorization

1.5k tokens
Stop Slop
by ComeOnOliver
×1

Remove AI writing patterns from prose. Use when drafting, editing, or reviewing text to eliminate predictable AI tells.

388 tokens
Gen Paylink Govilo
by ComeOnOliver
×1

> (1) Creating a Govilo unlock link from a ZIP, folder, or individual files, (2) Automating file upload to Govilo R2 storage with presigned URLs, (3) Managing Govilo Bot API interactions (presign → upload → create item). Requires GOVILO_API_KEY and SELLER_ADDRESS env vars.

930 tokens scripts
Seedance2 API
by ComeOnOliver
×1

Out-of-the-box Seedance 2.0 API skill — just one API key to generate AI videos. Builds storyboards, generates reference images with Seedream 4.5, submits video tasks, and polls results. Supports both MCP and standalone Python script mode. Use when the user mentions seedance, AI video, storyboard, or video generation.

3.8k tokens scripts
Powershell Expert
by ComeOnOliver
×1

Develop PowerShell scripts, tools, modules, and GUIs following Microsoft best practices. Use when writing PowerShell code, creating Windows Forms/WPF interfaces, working with PowerShell Gallery modules, or needing cmdlet/module recommendations. Covers script development, parameter design, pipeline handling, error management, and GUI creation patterns. Verifies module availability and cmdlet syntax against live documentation when accuracy is critical.

1.9k tokens scripts
Project Scaffolding
by ComeOnOliver
×1

> IDE-grade project scaffolding wizard for creating new projects with comprehensive configuration. Flutter, Expo, FastAPI, Django, Express, NestJS, Go/Gin, Rust/Axum, Spring Boot, Hono, Elysia, Chrome Extensions, VS Code Extensions, Tauri desktop apps, serverless functions, and more. Provides WebStorm/PyCharm-level project creation with interactive SDK selection, framework a framework application, initializing a codebase, scaffolding boilerplate, building extensions, creating mobile/desktop/web apps, setting up monorepos, or making static websites/landing pages.

2k tokens scripts
SQL Expert
by ComeOnOliver
×1

Write, optimize, and debug T-SQL queries for Microsoft SQL Server. Covers CTEs, window functions, PIVOT, MERGE, APPLY operators, execution plan analysis, indexing strategies, and stored procedures. Use when working with SQL Server, T-SQL scripts, .sql files, stored procedures, query optimization, or database performance tuning.

719 tokens
Swift Development
by ComeOnOliver
×1

> Comprehensive Swift development for building, testing, and deploying iOS/macOS applications. (2) Run tests with XCTest or Swift Testing framework, (3) Manage iOS simulators with simctl, (4) Handle code signing, provisioning profiles, and app distribution, (5) Format or lint Swift code with SwiftFormat/SwiftLint, (6) Work with Swift Package Manager (SPM), (7) Implement Swift 6 concurrency patterns (async/await, actors, Sendable), (8) Create SwiftUI views with MVVM architecture, (9) Set up Core Data or SwiftData persistence, or any other Swift/iOS/macOS development tasks.

1.8k tokens scripts
Emergency Card
by ComeOnOliver
×1

生成紧急情况下快速访问的医疗信息摘要卡片。当用户需要旅行、就诊准备、紧急情况或询问"紧急信息"、"医疗卡片"、"急救信息"时使用此技能。提取关键信息(过敏、用药、急症、植入物),支持多格式输出(JSON、文本、二维码),用于急救或快速就医。

3.4k tokens zh
Vue Debug Guides
by ComeOnOliver
×1

Vue 3 debugging and error handling for runtime errors, warnings, async failures, and SSR/hydration issues. Use when diagnosing or fixing Vue issues.

5.2k tokens
Ast Grep Rule Crafter
by ComeOnOliver
×1

Write AST-based code search and rewrite rules using ast-grep YAML. Create linting rules, code modernizations, and API migrations with auto-fix. Use when the user mentions ast-grep, tree-sitter patterns, code search rules, lint rules with YAML, AST matching, or code refactoring patterns.

950 tokens
Clean Code Reviewer
by ComeOnOliver
×1

Analyze code quality based on "Clean Code" principles. Identify naming, function size, duplication, over-engineering, and magic number issues with severity ratings and refactoring suggestions. Use when the user requests code review, quality check, refactoring advice, Clean Code analysis, code smell detection, or mentions terms like 代码体检, 代码质量, 重构检查.

1.1k tokens zh
Doc Consistency Reviewer
by ComeOnOliver
×1

文档一致性审核官,检查代码实现与文档说明的一致性。当用户请求审查文档与代码的一致性、检查 README/docs 是否过时、验证 API 文档准确性时使用此技能。适用于:(1) 审查 README 与实现一致性 (2) 检查 docs/ 目录文档是否过时 (3) 验证 API/配置文档准确性 (4) 生成文档一致性报告。触发词包括:文档审查、doc review、文档一致性、documentation consistency、检查文档过时、verify docs。

768 tokens zh
Vet
by ComeOnOliver
×1

Run vet immediately after ANY logical unit of code changes. Do not batch your changes, do not wait to be asked to run vet, make sure you are proactive.

994 tokens scripts
Agent Browser
by ComeOnOliver
×1

Browser automation for AI agents via inference.sh. Navigate web pages, interact with elements using @e refs, take screenshots, record video. Capabilities: web scraping, form filling, clicking, typing, drag-drop, file upload, JavaScript execution. Use for: web automation, data extraction, testing, agent browsing, research. Triggers: browser, web automation, scrape, navigate, click, fill form, screenshot, browse web, playwright, headless browser, web agent, surf internet, record video

2.4k tokens scripts
Agent Tools
by ComeOnOliver
×1

Run 150+ AI apps via inference.sh CLI - image generation, video creation, LLMs, search, 3D, Twitter automation. Models: FLUX, Veo, Gemini, Grok, Claude, Seedance, OmniHuman, Tavily, Exa, OpenRouter, and many more. Use when running AI apps, generating images/videos, calling LLMs, web search, or automating Twitter. Triggers: inference.sh, infsh, ai model, run ai, serverless ai, ai api, flux, veo, claude api, image generation, video generation, openrouter, tavily, exa search, twitter api, grok

1.1k tokens
Agent Browser
by ComeOnOliver
×1

Browser automation for AI agents via inference.sh. Navigate web pages, interact with elements using @e refs, take screenshots, record video. Capabilities: web scraping, form filling, clicking, typing, drag-drop, file upload, JavaScript execution. Use for: web automation, data extraction, testing, agent browsing, research. Triggers: browser, web automation, scrape, navigate, click, fill form, screenshot, browse web, playwright, headless browser, web agent, surf internet, record video

2.4k tokens scripts
Agent Tools
by ComeOnOliver
×1

Run 150+ AI apps via inference.sh CLI - image generation, video creation, LLMs, search, 3D, Twitter automation. Models: FLUX, Veo, Gemini, Grok, Claude, Seedance, OmniHuman, Tavily, Exa, OpenRouter, and many more. Use when running AI apps, generating images/videos, calling LLMs, web search, or automating Twitter. Triggers: inference.sh, infsh, ai model, run ai, serverless ai, ai api, flux, veo, claude api, image generation, video generation, openrouter, tavily, exa search, twitter api, grok

1.5k tokens
Agent UI
by ComeOnOliver
×1

Batteries-included agent component for React/Next.js from ui.inference.sh. One component with runtime, tools, streaming, approvals, and widgets built in. Capabilities: drop-in agent, human-in-the-loop, client-side tools, form filling. Use for: building AI chat interfaces, agentic UIs, SaaS copilots, assistants. Triggers: agent component, agent ui, chat agent, shadcn agent, react agent, agentic ui, ai assistant ui, copilot ui, inference ui, human in the loop

882 tokens
AI Image Generation
by ComeOnOliver
×1

Generate AI images with FLUX, Gemini, Grok, Seedream, Reve and 50+ models via inference.sh CLI. Models: FLUX Dev LoRA, FLUX.2 Klein LoRA, Gemini 3 Pro Image, Grok Imagine, Seedream 4.5, Reve, ImagineArt. Capabilities: text-to-image, image-to-image, inpainting, LoRA, image editing, upscaling, text rendering. Use for: AI art, product mockups, concept art, social media graphics, marketing visuals, illustrations. Triggers: flux, image generation, ai image, text to image, stable diffusion, generate image, ai art, midjourney alternative, dall-e alternative, text2img, t2i, image generator, ai picture, create image with ai, generative ai, ai illustration, grok image, gemini image

1.2k tokens
AI Video Generation
by ComeOnOliver
×1

Generate AI videos with Google Veo, Seedance, Wan, Grok and 40+ models via inference.sh CLI. Models: Veo 3.1, Veo 3, Seedance 1.5 Pro, Wan 2.5, Grok Imagine Video, OmniHuman, Fabric, HunyuanVideo. Capabilities: text-to-video, image-to-video, lipsync, avatar animation, video upscaling, foley sound. Use for: social media videos, marketing content, explainer videos, product demos, AI avatars. Triggers: video generation, ai video, text to video, image to video, veo, animate image, video from image, ai animation, video generator, generate video, t2v, i2v, ai video maker, create video with ai, runway alternative, pika alternative, sora alternative, kling alternative

1.4k tokens
Chat UI
by ComeOnOliver
×1

Chat UI building blocks for React/Next.js from ui.inference.sh. Components: container, messages, input, typing indicators, avatars. Capabilities: chat interfaces, message lists, input handling, streaming. Use for: building custom chat UIs, messaging interfaces, AI assistants. Triggers: chat ui, chat component, message list, chat input, shadcn chat, react chat, chat interface, messaging ui, conversation ui, chat building blocks

823 tokens
Elevenlabs Music
by ComeOnOliver
×1

ElevenLabs AI music generation - create original music from text prompts via inference.sh CLI. Capabilities: text-to-music, custom duration up to 10 minutes, genre/mood/instrument control, royalty-free commercial use. Use for: background music, soundtracks, jingles, podcasts, video scores, game audio. Triggers: elevenlabs music, eleven labs music, ai music, generate music, music generation, compose music, ai composer, create song, soundtrack, background music, jingle, elevenlabs compose, music ai

1.4k tokens
Elevenlabs Tts
by ComeOnOliver
×1

ElevenLabs text-to-speech with 22+ premium voices, multilingual support, and voice tuning via inference.sh CLI. Models: eleven_multilingual_v2 (highest quality), eleven_turbo_v2_5 (low latency), eleven_flash_v2_5 (ultra-fast). Capabilities: text-to-speech, voice selection, stability/style control, 32 languages. Use for: voiceovers, audiobooks, video narration, podcasts, accessibility, IVR. Triggers: elevenlabs, eleven labs, elevenlabs tts, premium tts, professional voice, ai voice, high quality tts, multilingual tts, eleven labs voice, voice generation, natural speech, realistic voice, voice over, speech synthesis

1.5k tokens
Infsh CLI
by ComeOnOliver
×1

Run 150+ AI apps via inference.sh CLI - image generation, video creation, LLMs, search, 3D, Twitter automation. Models: FLUX, Veo, Gemini, Grok, Claude, Seedance, OmniHuman, Tavily, Exa, OpenRouter, and many more. Use when running AI apps, generating images/videos, calling LLMs, web search, or automating Twitter. Triggers: inference.sh, infsh, ai model, run ai, serverless ai, ai api, flux, veo, claude api, image generation, video generation, openrouter, tavily, exa search, twitter api, grok

1.5k tokens
Javascript SDK
by ComeOnOliver
×1

JavaScript/TypeScript SDK for inference.sh - run AI apps, build agents, integrate 150+ models. Package: @inferencesh/sdk (npm install). Full TypeScript support, streaming, file uploads. Build agents with template or ad-hoc patterns, tool builder API, skills, human approval. Use for: JavaScript integration, TypeScript, Node.js, React, Next.js, frontend apps. Triggers: javascript sdk, typescript sdk, npm install, node.js api, js client, react ai, next.js ai, frontend sdk, @inferencesh/sdk, typescript agent, browser sdk, js integration

3.3k tokens
Nano Banana 2
by ComeOnOliver
×1

Generate images with Google Gemini 3.1 Flash Image Preview (Nano Banana 2) via inference.sh CLI. Capabilities: text-to-image, image editing, multi-image input (up to 14 images), Google Search grounding. Triggers: nano banana 2, nanobanana 2, gemini 3.1 flash image, gemini 3 1 flash image preview, google image generation

1.2k tokens
Nano Banana
by ComeOnOliver
×1

Generate images with Google Gemini native image models via inference.sh CLI. Models: Gemini 3 Pro Image, Gemini 2.5 Flash Image. Capabilities: text-to-image, image editing, multi-image input. Triggers: nano banana, gemini image, gemini 3 pro image, gemini 2.5 flash image, google image generation, native image generation, gemini native image

1k tokens
P Image
by ComeOnOliver
×1

Generate images with Pruna P-Image models via inference.sh CLI. Models: P-Image, P-Image-LoRA, P-Image-Edit, P-Image-Edit-LoRA. Capabilities: text-to-image, image editing, LoRA styles, multi-image compositing, fast inference. Pruna optimizes models for speed without quality loss. Triggers: pruna, p-image, pruna image, fast image generation, optimized flux, pruna ai, p image, fast ai image, economic image generation, cheap image generation

1k tokens
P Video
by ComeOnOliver
×1

Generate videos with Pruna P-Video and WAN models via inference.sh CLI. Models: P-Video, WAN-T2V, WAN-I2V. Capabilities: text-to-video, image-to-video, audio support, 720p/1080p, fast inference. Pruna optimizes models for speed without quality loss. Triggers: pruna video, p-video, pruna ai video, fast video generation, optimized video, wan t2v, wan i2v, economic video generation, cheap video generation, pruna text to video, pruna image to video

953 tokens
Python Executor
by ComeOnOliver
×1

Execute Python code in a safe sandboxed environment via [inference.sh](https://inference.sh). Pre-installed: NumPy, Pandas, Matplotlib, requests, BeautifulSoup, Selenium, Playwright, MoviePy, Pillow, OpenCV, trimesh, and 100+ more libraries. Use for: data processing, web scraping, image manipulation, video creation, 3D model processing, PDF generation, API calls, automation scripts. Triggers: python, execute code, run script, web scraping, data analysis, image processing, video editing, 3D models, automation, pandas, matplotlib

1.5k tokens
Python SDK
by ComeOnOliver
×1

Python SDK for inference.sh - run AI apps, build agents, and integrate with 150+ models. Package: inferencesh (pip install inferencesh). Supports sync/async, streaming, file uploads. Build agents with template or ad-hoc patterns, tool builder API, skills, and human approval. Use for: Python integration, AI apps, agent development, RAG pipelines, automation. Triggers: python sdk, inferencesh, pip install, python api, python client, async inference, python agent, tool builder python, programmatic ai, python integration, sdk python

2.8k tokens
Qwen Image 2 Pro
by ComeOnOliver
×1

Generate images with Alibaba Qwen-Image-2.0-Pro via inference.sh CLI. Professional text rendering, fine-grained realism, enhanced semantic adherence. Ideal for posters, banners, and text-heavy designs. Triggers: qwen image pro, qwen-image-pro, qwen 2 pro, alibaba image pro, dashscope pro, professional text rendering

1.6k tokens
Qwen Image 2
by ComeOnOliver
×1

Generate and edit images with Alibaba Qwen-Image-2.0 models via inference.sh CLI. Models: Qwen-Image-2.0 (fast), Qwen-Image-2.0-Pro (professional text rendering). Capabilities: text-to-image, multi-image editing, complex text rendering. Triggers: qwen image, qwen-image, alibaba image, dashscope image, qwen image 2, qwen image pro

1.4k tokens
Remotion Render
by ComeOnOliver
×1

Render videos from React/Remotion component code via inference.sh. Pass TSX code, get MP4. Supports all Remotion APIs: useCurrentFrame, useVideoConfig, spring, interpolate, AbsoluteFill, Sequence. Configurable resolution, FPS, duration, codec. Use for: programmatic video generation, animated graphics, motion design, data-driven videos, React animations to video. Triggers: remotion, render video from code, tsx to video, react video, programmatic video, remotion render, code to video, animated video, motion graphics code, react animation video

2k 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: 13 362 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 86 696 files found on GitHub, 68 413 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 in stages. Its name and description stay in the model's context all the time; the body of SKILL.md is read when the skill is used; other files in the folder, such as references, scripts and fonts, are opened only when the skill asks for them. The number we show is SKILL.md, the part every use pays for. A big folder is not a big cost: one official skill ships 83 font files, and none of them ever enters the context.
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: 8 409 skills here share a name with another skill, and two of them cannot sit side by side.