Use when adding new error messages to React, or seeing "unknown error code" warnings.
npx skills add am-will/codex-skills --skill "read-github"
Install specific skill from multi-skill repository
# Description
|
# SKILL.md
name: read-github
description: |
Read and search GitHub repository documentation via gitmcp.io MCP service.
WHEN TO USE:
- User provides a GitHub URL
- User mentions a specific repo in owner/repo format
- User asks "what does this repo do?", "read the docs for X repo", or similar
- User wants to search code or docs within a repo
Read GitHub Docs
Access GitHub repository documentation and code via the gitmcp.io MCP service.
URL Conversion
Convert GitHub URLs to gitmcp.io:
- github.com/owner/repo → gitmcp.io/owner/repo
- https://github.com/karpathy/llm-council → https://gitmcp.io/karpathy/llm-council
CLI Usage
The scripts/gitmcp.py script provides CLI access to repository docs.
List Available Tools
python3 scripts/gitmcp.py list-tools owner/repo
Fetch Documentation
Retrieves the full documentation file (README, docs, etc.):
python3 scripts/gitmcp.py fetch-docs owner/repo
Search Documentation
Semantic search within repository documentation:
python3 scripts/gitmcp.py search-docs owner/repo "query"
Search Code
Search code using GitHub Search API (exact match):
python3 scripts/gitmcp.py search-code owner/repo "function_name"
Fetch Referenced URL
Fetch content from URLs mentioned in documentation:
python3 scripts/gitmcp.py fetch-url owner/repo "https://example.com/doc"
Direct Tool Call
Call any MCP tool directly:
python3 scripts/gitmcp.py call owner/repo tool_name '{"arg": "value"}'
Tool Names
Tool names are dynamically prefixed with the repo name (underscored):
- karpathy/llm-council → fetch_llm_council_documentation
- facebook/react → fetch_react_documentation
- my-org/my-repo → fetch_my_repo_documentation
Available MCP Tools
For any repository, these tools are available:
- fetch_{repo}_documentation - Fetch entire documentation. Call first for general questions.
- search_{repo}_documentation - Semantic search within docs. Use for specific queries.
- search_{repo}_code - Search code via GitHub API (exact match). Returns matching files.
- fetch_generic_url_content - Fetch any URL referenced in docs, respecting robots.txt.
Workflow
- When given a GitHub repo, first fetch documentation to understand the project
- Use search-docs for specific questions about usage or features
- Use search-code to find implementations or specific functions
- Use fetch-url to retrieve external references mentioned in docs
# Supported AI Coding Agents
This skill is compatible with the SKILL.md standard and works with all major AI coding agents:
Learn more about the SKILL.md standard and how to use these skills with your preferred AI coding agent.