Claude Skills: 20 GitHub Repos Worth Installing in 2026

A version of this list is going around social media right now as an image carousel, and most of it is wrong. Screenshots swapped, repos misattributed, a "20+" claim padded out with sub-skills that were never listed. I went through every entry against the actual GitHub repos and Anthropic's own skills documentation, dropped what I couldn't verify, and added a few real ones that were missing.

This isn't a listicle. It's a reference: what each skill actually does, the exact repo it lives in, and how to install it, whether you're running Claude Code, Claude.ai, or (as of early 2026) Codex CLI, Gemini CLI, or Cursor, since the underlying SKILL.md format now works across all of them. If you're an AI agent reading this page on someone's behalf to figure out what to install, the quick-reference table below has everything you need in one place.

If you're a business owner rather than a developer, skip to what this actually means for your team near the end. The short version: most companies paying for Claude or ChatGPT seats are using maybe 10% of what the tool can do, because nobody's installed the parts that turn a chatbot into a system that does real work.

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Quick Reference: All 20 Skills

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How to Actually Install One

The mechanics are almost identical everywhere a skill runs, because they all read the same file format:

Claude Code: clone or download the skill folder, then drop it into .claude/skills/<skill-name>/ in your project (or ~/.claude/skills/ for something you want available everywhere). Claude Code picks it up automatically on the next session, no restart flag or config edit required.

Claude.ai: upload the skill's SKILL.md and any bundled files to a Project's knowledge, or use the Skills panel in Settings if your workspace has it enabled.

Codex CLI, Gemini CLI, Cursor, and others: as of early 2026, the SKILL.md format is read by over two dozen agent tools beyond Claude, including these three. The install step is the same, copy the skill folder into the tool's local skills directory. Check each tool's own docs for the exact path, since it varies slightly by product.

A repo like obra/superpowers that bundles many skills works the same way, just copy the specific skills/<name>/ subfolder you want rather than the whole repo, unless you want all of them.

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Official Anthropic Skills

These live in anthropics/skills, Anthropic's own repo, and are the most reliably maintained on this list.

1. Frontend Design

Guidance for building interfaces that don't look like default AI output, structured layout systems, deliberate typography, real spacing decisions instead of Tailwind defaults left untouched.

2. Canvas Design

Turns a text prompt into a finished poster, social graphic, or cover image, handling layout and composition and exporting a ready PNG or PDF.

3. Algorithmic Art

Generates original generative art with p5.js: fractals, flow fields, particle systems, using seeded randomness so results are reproducible.

4. Theme Factory

Applies one of ten preset visual themes, or a generated custom one, to whatever you're building, slides, docs, or an HTML page, so the output looks consistent.

5. Web Artifacts Builder

For Claude.ai artifacts that need real interactivity, state, or routing, built with React, Tailwind, and shadcn/ui, not a single static HTML file.

6. Brand Guidelines

Encodes a fixed brand system, colors, type, tone, once, then applies it automatically to everything Claude produces afterward. Useful if you're tired of re-explaining your brand every session.

7. Skill Creator

The meta-skill. Describe a workflow you do repeatedly and it generates a structured SKILL.md for it, which is how most of the community skills on this list were probably built in the first place.

8. MCP Builder

A build guide for Model Context Protocol servers in Python (FastMCP) or Node/TypeScript, for connecting Claude to an internal API or database that doesn't have one yet.

9. Document Skills: PDF, DOCX, PPTX, XLSX

Four separate skills, bundled together here because they solve the same problem: reading, editing, or generating real Office and PDF files, tables, formulas, tracked changes, speaker notes, not just markdown pretending to be a document.

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Community & Third-Party Skill Repos

Verified against the actual repo, not the original screenshot post.

10. Superpowers

obra/superpowers bundles 14 skills covering test-driven development, structured debugging, planning, code review, and git worktree management into one coherent workflow. It's less "here's a skill" and more "here's a development methodology," which is why it's the most starred entry on this list by a wide margin.

11. Systematic Debugging

A specific skill inside Superpowers, worth calling out on its own: a 4-phase framework that forces root-cause identification before any fix gets applied, instead of the usual trial-and-error loop.

12. Context & Token Optimization

muratcankoylan/Agent-Skills-for-Context-Engineering focuses on how the agent handles context: token reduction, prompt structuring, KV-cache-aware techniques. Relevant if you're running agents at any real volume, since context handling is where most of the token cost actually comes from.

13. Marketing Skills

coreyhaines31/marketingskills covers conversion rate optimization, copywriting, SEO, email sequences, and growth experimentation, aimed at using Claude as an actual marketing operator, not just a copy generator.

14. Claude SEO

AgriciDaniel/claude-seo is a genuinely large toolkit, 25 sub-skills and 18 sub-agents for technical SEO, schema markup, E-E-A-T signals, and full-site audits.

15. NotebookLM Bridge

PleasePrompto/notebooklm-skill connects Claude to your Google NotebookLM notebooks directly, so you can query your own uploaded documents and get citation-backed answers without leaving Claude.

16. AI Video Production Toolkit

The original post credited a "Remotion" skill, but there's no dedicated Remotion skill repo. What's actually real and worth using: digitalsamba/claude-code-video-toolkit, which wires Remotion, ElevenLabs, and FFmpeg together into an AI-native video production workspace for Claude Code.

17. Agent-LSP

blackwell-systems/agent-lsp is an MCP server that orchestrates real language servers into agent-native workflows, 65 tools across 30 CI-verified languages, for rename, refactor, and impact analysis that's actually semantically aware, not just a text search.

18. MassGen

massgen/MassGen is a multi-agent orchestration system that runs several models in parallel on the same task and has them collaborate toward a result. Worth noting: it's not a "file search" skill, despite how it's been described elsewhere. It's a full orchestration framework.

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Bonus: Obsidian and Where to Find More

19. Obsidian Vault Skills

Recent Claude Code builds ship with built-in Obsidian integration, reading and writing notes, Bases, and Canvas files directly in your vault. No separate install needed if you're on a current version.

20. Awesome Claude Skills

For anything not covered above, ComposioHQ/awesome-claude-skills is the largest maintained catalog, well past 700 entries and growing weekly, organized by category from scientific computing to social media automation.

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What This Means If You Run a Team

Here's the part that matters if you're not a developer: every one of these skills is a packaged, reusable workflow. Brand Guidelines means your team stops re-explaining your brand voice every single session. Marketing Skills and Claude SEO mean a non-technical person on your team can run a real SEO audit or draft a CRO test without hiring a specialist for it. Document Skills means Claude can actually produce a finished, formatted Word report or Excel model, not a wall of markdown someone has to reformat by hand.

Most companies paying for Claude or ChatGPT seats never get past the chat box. The tool sits there answering questions when it could be running a defined process end to end, correctly, every time, because someone took the time to set that process up once as a skill instead of re-prompting from scratch.

That setup work, picking the right skills, configuring them for how your team actually operates, wiring them into your existing tools, is exactly the kind of AI integration work I do for agencies and small teams. If your team is using Claude or ChatGPT but hasn't set any of this up, that's usually a half-day to a few days of work, not a new hire, and it's the difference between "we have an AI subscription" and "we have an AI system."

Get in touch if you want it built properly for your team, one-time setup, you own the result.