Here's how Claude himself explained it, and I think he really captures the essence of it: Claude Skills solve a common problem: normally, when you want an LLM to do something specific, you have to prompt it each time. Or maybe you set up custom instructions in a project, but then you can only use those instructions when you're in that project. Otherwise, you're back to copying and pasting the same prompt over and over. Skills change this completely. Think of it like Neo's "I know kung fu" moment in The Matrix. Just like they uploaded kung fu directly into Neo's brain and he could instantly use it, you're uploading specialized knowledge into Claude that it can apply automatically whenever needed. When you create a Skill, you're building a knowledge package with instructions, best practices, examples, and specific guidance for a task. You download it, upload it back into Claude's Skills section, and you're done. From that point forward, whenever you mention anything relevant to that Skill (or even just start a task it applies to), Claude automatically uses that knowledge. It's like giving Claude a reference guide it checks before starting work. The beauty is the "anywhere, anytime, automatically" part. You don't have to keep uploading prompts. You don't have to be in a specific project. It takes the concept of custom instructions and makes it universal across every single conversation you have. Skills just work in the background whenever they're relevant, no manual triggering needed. It's Claude's "I know kung fu" moment. Answer from hesasorcererthatone on reddit.com
🌐
Claude
code.claude.com › docs › en › skills
Agent Skills - Claude Code Docs
This guide shows you how to create, use, and manage Agent Skills in Claude Code.
🌐
GitHub
github.com › anthropics › skills
GitHub - anthropics/skills: Public repository for Agent Skills
3 days ago - ./skills: Skill examples for Creative & Design, Development & Technical, Enterprise & Communication, and Document Skills ... You can register this repository as a Claude Code Plugin marketplace by running the following command in Claude Code:
Starred by 26.2K users
Forked by 2.4K users
Languages   Python 83.9% | JavaScript 9.4% | HTML 4.3% | Shell 2.4%
Discussions

10 Claude Skills that actually changed how I work (no fluff)
Honestly, I feel lost. Without some examples of real-life, day-to-day work, I'll never be able to understand if these skills are going to blend with my way of working; I'm specifically referring to Superpowers as the other skills are quite self-explanatory, even though they don't really fit my use cases (senior backend dev working exclusively on brown fields with an extensive, exsisting code base that we need to evolve coherently). More on reddit.com
🌐 r/ClaudeAI
119
764
October 31, 2025
Claude Code skills activate 20% of the time. Here's how I got to 84%.
This is an excellent piece of research. Why I like it: you didn't just say "I did this and it's a game-changer". Instead you systematically tried four different hook implementations, and you measured them systematically against a suite of synthetic and real-world situations. This way we have confidence that you understand the landscape of all possible implementations, and there's reason to believe that yours is an optimum. Thank you! I've shared it with my team. More on reddit.com
🌐 r/ClaudeCode
35
231
November 16, 2025
I’ve been tracking what people are building with Claude Skills since launch - here’s the wildest stuff I’ve found (with links)
Can we ban the term production ready? Also it’s kinda like having Claude auto pick the correct project for a task which is where people would’ve put this type of custom instructioning and acc it’s useful. More on reddit.com
🌐 r/ClaudeAI
192
1019
October 20, 2025
Claude Skills Might Be One of the Most Game-chaging Ideas Right Now
This is hilarious. You thought deeply about skills and made a 12 paragraph dissertation about how amazing and special they are. I looked into it and said "these are literally just prompts". More on reddit.com
🌐 r/ClaudeCode
86
56
November 19, 2025
🌐
Reddit
reddit.com › r/claudeai › what are claude skills really?
r/ClaudeAI on Reddit: What are Claude Skills really?
October 19, 2025 -

I've heard Skills might be the next big thing that changes the ai game. But I just can't get my head around them. My use case is mainly Claude Web with projects that help me build resources for work.

How is a Skill different from custom instructions? How is a Skill different from projects?

You could make an email Skill to write like you, but you could also make a project that does the same.

Or I have this project that is instructed "If A, find X google drive document, if B, find Y. Heres the links" - Could Skills replace this part of the prompt which could help with tokens?

Please explain like I'm 10 🙏🏼

Top answer
1 of 34
86
Here's how Claude himself explained it, and I think he really captures the essence of it: Claude Skills solve a common problem: normally, when you want an LLM to do something specific, you have to prompt it each time. Or maybe you set up custom instructions in a project, but then you can only use those instructions when you're in that project. Otherwise, you're back to copying and pasting the same prompt over and over. Skills change this completely. Think of it like Neo's "I know kung fu" moment in The Matrix. Just like they uploaded kung fu directly into Neo's brain and he could instantly use it, you're uploading specialized knowledge into Claude that it can apply automatically whenever needed. When you create a Skill, you're building a knowledge package with instructions, best practices, examples, and specific guidance for a task. You download it, upload it back into Claude's Skills section, and you're done. From that point forward, whenever you mention anything relevant to that Skill (or even just start a task it applies to), Claude automatically uses that knowledge. It's like giving Claude a reference guide it checks before starting work. The beauty is the "anywhere, anytime, automatically" part. You don't have to keep uploading prompts. You don't have to be in a specific project. It takes the concept of custom instructions and makes it universal across every single conversation you have. Skills just work in the background whenever they're relevant, no manual triggering needed. It's Claude's "I know kung fu" moment.
2 of 34
20
It's a structured document that you can only use on Claude. To me, as a non-coder no-computer background type, they wrote Skills like it's a new computer language for a markdown file. I'm super excited to see Big Tech adopt and formalize structured documents as System Prompts. Google has something called Google Playbooks. I've been writing about System Prompt Notebooks (SPNs) for months - https://www.reddit.com/r/LinguisticsPrograming/s/uLv5p8eq5f I personally use structured Google Docs ( with tabs) and English. Basically all you need is clear titles and headers for the LLM to parse. Of course, the better you are with words and articulating instructions, the better the experience. I upload the SPN at the beginning of a chat and prompt the LLM to use @[file name] as a system prompt and to use as a first source of reference. For there, my prompts can be start and basic. What you're really building is an external memory file for the LLM. A project rulebook, employees handbook, Claude Skills, Google Playbooks or System Prompt Notebooks - all they are, are structured documents with instructions, rules, etc. Where Google and Claude will fall short is they are developing platform specific tools. My SPNs are not platform specific and can be used with any LLM that accepts uploads. So, if you've been doing to the same, you are ahead of they power curve.
🌐
Claude
claude.com › blog › skills
Introducing Agent Skills | Claude
October 16, 2025 - Skills extend Claude Code with your team's expertise and workflows. Install skills via plugins from the anthropics/skills marketplace. Claude loads them automatically when relevant.
🌐
Anthropic
anthropic.com › engineering › equipping-agents-for-the-real-world-with-agent-skills
Equipping agents for the real world with Agent Skills
October 16, 2025 - Beyond efficiency concerns, many applications require the deterministic reliability that only code can provide. In our example, the PDF skill includes a pre-written Python script that reads a PDF and extracts all form fields. Claude can run this script without loading either the script or the PDF into context.
🌐
Substack
lennysnewsletter.com › p › claude-skills-explained
Claude Skills explained: How to create reusable AI workflows
October 22, 2025 - Today I dive into Anthropic’s latest feature that lets anyone create reusable workflows for Claude—no coding required. I break down exactly what Claude Skills are, how to build them from scratch, and how to use them inside Claude Code and Cursor to automate recurring AI tasks like generating PRDs, writing changelog summaries, and turning demo notes into follow-up emails.
🌐
Sid Bharath
siddharthbharath.com › home › blog › claude skills tutorial: give your ai superpowers
Claude Skills Tutorial: Give your AI Superpowers - Sid Bharath
October 28, 2025 - Skills essentially act as on-demand experts that Claude “calls upon” during a conversation when it recognizes that the user’s request matches the Skill’s domain. Crucially, Skills run in a sandboxed code execution environment for safety, meaning they operate within clearly defined boundaries and only perform actions you’ve allowed.
Find elsewhere
🌐
Anthropic
anthropic.com › news › skills
Claude Skills: Customize AI for your workflows
October 16, 2025 - Skills extend Claude Code with your team's expertise and workflows. Install skills via plugins from the anthropics/skills marketplace. Claude loads them automatically when relevant.
🌐
Simon Willison
simonwillison.net › 2025 › Oct › 16 › claude-skills
Claude Skills are awesome, maybe a bigger deal than MCP
October 16, 2025 - Skills are conceptually extremely simple: a skill is a Markdown file telling the model how to do something, optionally accompanied by extra documents and pre-written scripts that the model can run to help it accomplish the tasks described by the skill. Claude’s new document creation abilities, which accompanied their new code interpreter feature in September, turned out to be entirely implemented using skills.
🌐
Scott Spence
scottspence.com › home › posts › how to make claude code skills activate reliably
How to Make Claude Code Skills Activate Reliably - Scott Spence
November 16, 2025 - In practice? Nah. They just sit there whilst Claude barrels ahead blissfully ignoring them. My original “solution” was a simple hook that said “INSTRUCTION: If the prompt matches any skill keywords, use Skill(skill-name).” That gave me about 50% activation.
🌐
Reddit
reddit.com › r/claudeai › 10 claude skills that actually changed how i work (no fluff)
r/ClaudeAI on Reddit: 10 Claude Skills that actually changed how I work (no fluff)
October 31, 2025 -

Okay so Skills dropped last month and I've been testing them nonstop. Some are genuinely useful, others are kinda whatever. Here's what I actually use:

1. Rube MCP Connector - This one's wild. Connect Claude to like 500 apps (Slack, GitHub, Notion, etc) through ONE server instead of setting up auth for each one separately. Saves so much time if you're doing automation stuff.

2. Superpowers - obra's dev toolkit. Has /brainstorm, /write-plan, /execute-plan commands that basically turn Claude into a proper dev workflow instead of just a chatbot. Game changer if you're coding seriously.

3. Document Suite - Official one. Makes Claude actually good at Word/Excel/PowerPoint/PDF. Not just reading them but ACTUALLY creating proper docs with formatting, formulas, all that. Built-in for Pro users.

4. Theme Factory - Upload your brand guidelines once, every artifact Claude makes follows your colors/fonts automatically. Marketing teams will love this.

5. Algorithmic Art - p5.js generative art but you just describe it. "Blue-purple gradient flow field, 5000 particles, seed 42" and boom, reproducible artwork. Creative coders eating good.

6. Slack GIF Creator - Custom animated GIFs optimized for Slack. Instead of searching Giphy, just tell Claude what you want. Weirdly fun.

7. Webapp Testing - Playwright automation. Tell Claude "test the login flow" and it writes + runs the tests. QA engineers this is for you.

8. MCP Builder - Generates MCP server boilerplate. If you're building custom integrations, this cuts setup time by like 80%.

9. Brand Guidelines - Similar to Theme Factory but handles multiple brands. Switch between them easily.

10. Systematic Debugging - Makes Claude debug like a senior dev. Root cause → hypotheses → fixes → documentation. No more random stabbing.

Quick thoughts:

  • Skills are just markdown files with YAML metadata (super easy to make your own)

  • They're token-efficient (~30-50 tokens until loaded)

  • Work across Claude.ai, Claude Code, and API

  • Community ones on GitHub are hit or miss, use at your own risk

The Rube connector and Superpowers are my daily drivers now. Document Suite is clutch when clients send weird file formats.

Anyone else trying these? What am I missing?

Resources:

  • Claude Skills repo

  • Superpowers

  • Rube

🌐
YouTube
youtube.com › watch
Claude Agent Skills Explained - YouTube
Agent Skills are organized folders that package expertise that Claude can automatically invoke when relevant to the task at hand.Join the Claude Developer Di...
Published   1 month ago
🌐
Medium
medium.com › @ooi_yee_fei › claude-code-skills-superpowering-claude-code-agents-a42b44a58ae2
Claude Code Skills — Equipping Your Claude Code Agents with more Superpowers | by Yee Fei | Nov, 2025 | Medium
November 11, 2025 - Each code review is a quality gate. Issues are caught immediately, preventing technical debt. Phase 4: Debugging with Discipline (superpowers:systematic-debugging) When a bug appeared, Claude didn’t guess. It invoked the systematic-debugging skill, which enforces a four-step process:
🌐
Claude Docs
platform.claude.com › docs › en › agents-and-tools › agent-skills › overview
Agent Skills - Claude Docs
Progressive disclosure ensures only relevant content occupies the context window at any given time. Skills run in a code execution environment where Claude has filesystem access, bash commands, and code execution capabilities.
🌐
YouTube
youtube.com › watch
Claude Code Skills: Automate Everything You Do - YouTube
🤖 Download my FREE Claude Code cheat sheet with keyboard shortcuts, custom setup, and power-user workflows:https://github.com/bhancockio/claude-code-cheat-s...
Published   October 28, 2025
🌐
Reddit
reddit.com › r/claudecode › claude code skills activate 20% of the time. here's how i got to 84%.
r/ClaudeCode on Reddit: Claude Code skills activate 20% of the time. Here's how I got to 84%.
November 16, 2025 -

I spent some time building skills for SvelteKit - detailed guides on Svelte 5 runes, data flow patterns, routing. They were supposed to activate autonomously based on their descriptions.

They didn't.

Skills just sat there whilst Claude did everything manually. Basically a coin flip.

So I built a testing framework and ran 200+ tests to figure out what actually works.

The results:

- No hooks: 0% activation

- Simple instruction hook: 20% (the coin flip)

- LLM eval hook: 80% (fastest, cheapest)

- Forced eval hook: 84% (most consistent)

The difference? Commitment mechanisms.

Simple hooks are passive suggestions Claude ignores. The forced eval hook makes Claude explicitly evaluate EACH skill with YES/NO reasoning before proceeding.

Once Claude writes "YES - need reactive state" it's committed to activating that skill.

Key finding: Multi-skill prompts killed the simple hook (0% on complex tasks). The forced hook never completely failed a category.

All tests run with Claude Haiku 4.5 at ~$0.006 per test. Full testing framework and hooks are open source.

Full write-up: https://scottspence.com/posts/how-to-make-claude-code-skills-activate-reliably

Testing framework: https://github.com/spences10/svelte-claude-skills

🌐
Lee Hanchung
leehanchung.github.io › blogs › 2025 › 10 › 26 › claude-skills-deep-dive
Claude Agent Skills: A First Principles Deep Dive
October 26, 2025 - Claude uses a declarative, prompt-based system for skill discovery and invocation. The AI model (Claude) makes the decision to invoke skills based on textual descriptions presented in its system prompt.
🌐
Reddit
reddit.com › r/claudeai › i’ve been tracking what people are building with claude skills since launch - here’s the wildest stuff i’ve found (with links)
r/ClaudeAI on Reddit: I’ve been tracking what people are building with Claude Skills since launch - here’s the wildest stuff I’ve found (with links)
October 20, 2025 -

So Claude Skills dropped last week and honestly, I’ve been down a rabbit hole watching what the community’s been shipping. For those who haven’t tried it yet - Skills are basically persistent instructions/code/resources that Claude can load when it needs them. Once you install a Skill, Claude just knows how to do that thing across all your conversations.

The crazy part? People are building genuinely useful stuff in HOURS, not weeks.

Here’s what I’ve found so far:

🔥 The Meta One: Skill-Creator

Anthropic made a Skill that builds Skills for you. Yeah, you read that right. You just describe what you want in plain English, and it writes the SKILL.md file for you. I tested it yesterday and it’s actually really good. Demo (47 seconds): https://youtube.com/watch?v=kS1MJFZWMq4

🤖 Auto-Generation Tool: Skill Seekers

u/Critical-Pea-8782 built something wild - a tool that auto-generates Claude Skills from ANY documentation site.

  • Feed it a docs URL

  • Wait 25 minutes

  • Get a production-ready Skill

It has presets for React, Vue, Django, Godot, FastAPI… basically any major framework. GitHub: https://github.com/yusufkaraaslan/Skill_Seekers I tried this with the Godot docs and it actually works. The Skill it generated knows way more about Godot than base Claude.

📚 Community Collections

A few people have started curating all the Skills being created:

BehiSecc’s Collection: https://github.com/BehiSecc/awesome-claude-skills Includes: CSV analyzers, research assistants, YouTube transcript fetchers, EPUB parsers, git automation, and a bunch more.

travisvn’s Collection: https://github.com/travisvn/awesome-claude-skills Similar vibe but with more enterprise/workflow focus. Both are actively maintained and honestly just browsing these gives you ideas.

🎨 Official Anthropic Skills Pack

Anthropic shipped 15 Skills out of the gate. The document creation ones are actually really impressive:

  • docx - Creates proper Word docs (not just markdown pretending to be Word)

  • pptx - Actual PowerPoint files with layouts, charts, etc.

  • xlsx - Excel with real formulas

  • pdf - Form filling and manipulation

  • canvas-design - Visual layouts in PNG/PDF

  • brand-guidelines - Keeps everything on-brand

  • algorithmic-art - Generative art with p5.js

  • slack-gif-creator - Makes GIFs that fit Slack’s constraints

Plus more for internal comms, web testing, MCP server creation, etc. GitHub: https://github.com/anthropics/skills The document-skills folder is particularly interesting if you want to see how Anthropic approaches complex Skills.

🧠 Simon Willison’s Take: “Bigger Than MCP”

Simon Willison (the guy who reverse-engineered Skills before the official announcement) wrote a really good technical breakdown: https://simonwillison.net/2025/Oct/16/claude-skills/

TLDR: Skills are more token-efficient than MCP and way easier to share. Each Skill only uses a few dozen tokens until it’s actually needed, then Claude loads the full details. His take is that Skills might end up being more important than MCP in the long run. Honestly? After using both, I kinda see his point.

🎬 Official Demo: Skills Chaining

Anthropic’s demo shows Skills working together automatically: PowerPoint Skill → Brand Guidelines Skill → Poster Design Skill All in one conversation. Claude just switches between them as needed. Video: https://youtube.com/watch?v=IoqpBKrNaZI

🤔 My Honest Take

I’ve been using Claude for months and Skills genuinely feel different. It’s not just “better prompts” - it’s more like giving Claude actual expertise that sticks around. The best part? Everything’s open-source. You can fork Skills, modify them, share them with your team. The barrier to entry is super low.

Downsides I’ve noticed:

  • Some Skills work better than others (canvas-design got roasted on HN)

  • You need Claude Pro/Team/Enterprise (not available on free tier)

  • It’s still early - some rough edges But overall? This feels like a real step forward in making AI actually useful for specific workflows.

📢 What are you building?

Has anyone else been experimenting with Skills? What have you built? What Skills do you wish existed? I’m particularly curious if anyone’s made Skills for:

  • API documentation (specific to your company)

  • Data analysis workflows

  • Content creation pipelines

  • Design systems

Drop your Skills in the comments - let’s build this library together 👇

Edit:

Claude community is going crazy! Here are some more resources shared by our community members:

  1. https://claude.ai/public/artifacts/87ae1fd6-3817-4af9-8459-8d5c6b9bc490

  2. https://karozieminski.substack.com/p/claude-skills-anthropic-viral-toolkit-agentic-workflows-community-guide

  3. https://edwin.genego.io/blog/claude-skills

  4. https://github.com/abubakarsiddik31/claude-skills-collection

  5. https://github.com/Doriandarko/golden-gate-claude-skill

  6. https://github.com/PleasePrompto/notebooklm-skill

  7. https://github.com/davila7/claude-code-templates

  8. https://mcpservers.org/claude-skills

🌐
Hugging Face
huggingface.co › blog › sionic-ai › claude-code-skills-training
How We Use Claude Code Skills to Run 1,000+ ML Experiments a Day
2 weeks ago - When you finish an experiment session in Claude Code, you type one command. Claude reads through what you did, extracts the important parts and writes it up as a "skill." That skill goes into a shared registry.