# How to Extend Claude's Capabilities with ComposioHQ/awesome-claude-skills > Boost Claude's power using ComposioHQ/awesome-claude-skills. Install ready-to-use skills or create your own with simple declarative files for enhanced functionality. - Repository: [Composio/awesome-claude-skills](https://github.com/composiohq/awesome-claude-skills) - Tags: how-to-guide - Published: 2026-07-28 --- **You can extend Claude's capabilities by installing production-ready skills from the ComposioHQ/awesome-claude-skills repository or by authoring declarative [`SKILL.md`](https://github.com/ComposioHQ/awesome-claude-skills/blob/main/SKILL.md) files that bundle scripts, references, and third-party integrations.** The ComposioHQ/awesome-claude-skills repository is a curated collection of over 1,000 Claude skills and plugins that let Claude perform real-world actions, integrate with SaaS tools, and execute complex workflows. Whether you use Claude.ai, Claude Code, or the Claude API, this modular framework lets you extend Claude's capabilities with custom knowledge and deterministic automation. ## What Is the ComposioHQ/awesome-claude-skills Framework? The repository is organized as a set of skill folders, each following a lightweight convention that Claude reads on demand. Every skill lives in its own directory and contains a [`SKILL.md`](https://github.com/ComposioHQ/awesome-claude-skills/blob/main/SKILL.md) file plus optional resource subdirectories. Real-world skill definitions such as [`video-downloader/SKILL.md`](https://github.com/ComposioHQ/awesome-claude-skills/blob/main/video-downloader/SKILL.md), [`lead-research-assistant/SKILL.md`](https://github.com/ComposioHQ/awesome-claude-skills/blob/main/lead-research-assistant/SKILL.md), and [`github-automation/SKILL.md`](https://github.com/ComposioHQ/awesome-claude-skills/blob/main/github-automation/SKILL.md) demonstrate production patterns. ### The Four Layers of a Skill - **Skill definition** — A [`SKILL.md`](https://github.com/ComposioHQ/awesome-claude-skills/blob/main/SKILL.md) file with YAML front-matter and markdown instructions that tells Claude when and how to act. - **Bundled resources** — Reusable code, reference docs, and assets stored in `scripts/`, `references/`, and `assets/` to keep the core skill lean. - **Runtime glue** — The `connect-apps-plugin/` and `mcp-builder/` utilities expose skills to Claude via the Model Context Protocol (MCP) gateway. - **Documentation & tooling** — Guides such as [`skill-creator/SKILL.md`](https://github.com/ComposioHQ/awesome-claude-skills/blob/main/skill-creator/SKILL.md) and the [`init_skill.py`](https://github.com/ComposioHQ/awesome-claude-skills/blob/main/init_skill.py) scaffolder streamline authoring and testing. ### Core Files You Should Know - **[`README.md`](https://github.com/ComposioHQ/awesome-claude-skills/blob/main/README.md)** — Entry point that explains the skill catalogue and installation steps. - **[`skill-creator/SKILL.md`](https://github.com/ComposioHQ/awesome-claude-skills/blob/main/skill-creator/SKILL.md)** — Meta-skill blueprint with best practices for authoring. - **[`skill-creator/scripts/init_skill.py`](https://github.com/ComposioHQ/awesome-claude-skills/blob/main/skill-creator/scripts/init_skill.py)** — Python automation that generates a new skill skeleton. - **[`connect-apps-plugin/README.md`](https://github.com/ComposioHQ/awesome-claude-skills/blob/main/connect-apps-plugin/README.md)** — Instructions for wiring Claude to Composio's MCP gateway and 500+ third-party services. - **[`connect-apps-plugin/commands/setup.md`](https://github.com/ComposioHQ/awesome-claude-skills/blob/main/connect-apps-plugin/commands/setup.md)** — Detailed steps for configuring your Composio API key. - **[`mcp-builder/SKILL.md`](https://github.com/ComposioHQ/awesome-claude-skills/blob/main/mcp-builder/SKILL.md)** — Guide to building custom MCP servers in Python or Node. ## How to Extend Claude's Capabilities with a New Skill Follow these steps to add a domain-specific workflow to Claude. ### 1. Choose Your Use Case Decide what real-world action Claude should handle, such as downloading a YouTube video, querying BigQuery, or summarizing a transcript. ### 2. Generate the Skill Scaffold Run the provided utility from the repository root to create a compliant folder structure: ```bash cd path/to/awesome-claude-skills python skill-creator/scripts/init_skill.py my-new-skill --path . ``` This command creates `my-new-skill/` with a templated [`SKILL.md`](https://github.com/ComposioHQ/awesome-claude-skills/blob/main/SKILL.md) and placeholder `scripts/`, `references/`, and `assets/` folders. ### 3. Declare the Skill Metadata Open [`my-new-skill/SKILL.md`](https://github.com/ComposioHQ/awesome-claude-skills/blob/main/my-new-skill/SKILL.md) and set a clear `name:` and `description:` that tells Claude exactly when to invoke the skill. For example, *"Use when the user asks to convert a Markdown file to PDF"*. ### 4. Write the Instruction Body Use imperative, verb-first sentences to describe the step-by-step workflow. Reference external scripts or documents rather than inlining large blocks of logic. ### 5. Bundle Reusable Resources Add deterministic code and static assets to the appropriate folders: - `scripts/` — Python or Bash code that Claude can execute without loading the entire file into context. - `references/` — API specs, data schemas, or detailed guides that Claude can search on demand. - `assets/` — Templates, images, or fonts that Claude copies into the user's output. ### 6. Validate and Package Optionally run the repository's packaging script to enforce schema requirements and produce a zip file for sharing or uploading to the Claude marketplace. ## Practical Example: Building a YouTube Transcript Summarizer Skill Below is a minimal skill definition that demonstrates the declarative pattern used in ComposioHQ/awesome-claude-skills. ### The SKILL.md Definition ```yaml --- name: youtube-transcript-summarizer description: Summarize YouTube video transcripts on demand; use when the user provides a video URL and asks for a concise summary. --- # YouTube Transcript Summarizer ## When to Use - The user shares a YouTube link and wants a short summary. - The user asks "What is this video about?" without providing a transcript. ## Instructions 1. Extract the video ID from the supplied URL. 2. Call the `scripts/fetch_transcript.py` script with the video ID to obtain the full transcript. 3. Summarize the transcript using Claude's LLM with a max token limit of 300. 4. Return the summary to the user. ## Resources - `scripts/fetch_transcript.py` – Uses the YouTube Data API to download captions. - `references/youtube_api.md` – API key handling and quota limits. ``` ### The Companion Script Create [`scripts/fetch_transcript.py`](https://github.com/ComposioHQ/awesome-claude-skills/blob/main/scripts/fetch_transcript.py) to handle the deterministic work: ```python #!/usr/bin/env python3 import sys, requests, os API_KEY = os.getenv("YOUTUBE_API_KEY") # Provided via Composio MCP def fetch(video_id): url = f"https://www.googleapis.com/youtube/v3/captions?videoId={video_id}&key={API_KEY}" # ... logic to retrieve and return transcript text ... return "Transcribed text …" if __name__ == "__main__": print(fetch(sys.argv[1])) ``` When this skill is installed, Claude loads only the metadata during a session and expands the full instructions only when the skill is relevant, preserving the model's context window. Upon a matching request, Claude pulls in the script, fetches the transcript, and uses its own LLM to return a concise summary. ## Deploying Your Custom Skill to Claude After you build a skill, you must make it available to Claude's runtime. According to the ComposioHQ/awesome-claude-skills source code, you can deploy a skill by copying its folder into Claude's skill directory: ```bash cp -r my-new-skill ~/.config/claude-code/skills/ ``` Alternatively, package the folder as a zip and distribute it through the Claude marketplace. For authenticated actions across Gmail, Slack, GitHub, and other services, install the `connect-apps-plugin/` and configure your Composio API key as described in [`connect-apps-plugin/commands/setup.md`](https://github.com/ComposioHQ/awesome-claude-skills/blob/main/connect-apps-plugin/commands/setup.md). ## Summary The ComposioHQ/awesome-claude-skills repository provides a declarative, modular way to extend Claude without bloating the model's context window: - **Declare** triggers and workflows in a concise [`SKILL.md`](https://github.com/ComposioHQ/awesome-claude-skills/blob/main/SKILL.md) file. - **Bundle** deterministic scripts, large reference docs, and static assets to keep instructions lightweight. - **Deploy** by copying the skill folder to `~/.config/claude-code/skills/` or packaging it for the marketplace. - **Authenticate** with 500+ SaaS tools through the built-in MCP gateway and `connect-apps-plugin`. ## Frequently Asked Questions ### What is the fastest way to create a new skill for Claude? Run `python skill-creator/scripts/init_skill.py --path .` from the repository root. This generates a compliant directory with a templated [`SKILL.md`](https://github.com/ComposioHQ/awesome-claude-skills/blob/main/SKILL.md) and placeholder resource folders, letting you focus on logic rather than scaffolding. ### How does Claude know when to use a custom skill? Claude reads the `name` and `description` fields in each [`SKILL.md`](https://github.com/ComposioHQ/awesome-claude-skills/blob/main/SKILL.md) file to decide relevance. The description should explicitly state the trigger condition, such as *"use when the user asks to convert Markdown to PDF"*, so the model can match user intent accurately. ### Where should I store large API docs or helper scripts? Place large reference documents in the `references/` folder and executable code in `scripts/`. Claude loads these resources on demand rather than keeping them in the active context window, which preserves token space for reasoning. ### Can I connect my skill to external SaaS tools like Gmail or GitHub? Yes. Install the `connect-apps-plugin/` to wire your skill to Composio's MCP gateway. This plugin exposes authenticated actions across 500+ services, and you can configure credentials by following the steps in [`connect-apps-plugin/commands/setup.md`](https://github.com/ComposioHQ/awesome-claude-skills/blob/main/connect-apps-plugin/commands/setup.md).