SKILL.md
GitHub Grep
Base directory for this skill: /home/hazeruno/.config/opencode/skills/gh-grep
Search for real-world code examples across over a million public GitHub repositories via grep.app.
When to Use
- Finding implementation patterns for unfamiliar APIs or libraries
- Looking for correct syntax, parameters, or configuration examples
- Discovering production-ready code examples and best practices
- Understanding how different libraries/frameworks work together
Quick Start
Run the CLI script with bun (use absolute path):
bun /home/hazeruno/.config/opencode/skills/gh-grep/scripts/grep.ts searchGitHub --query "<code-pattern>" [options]
Core Options
| Option |
Description |
--query |
Literal code pattern (required) |
--match-case |
Case-sensitive search |
--match-whole-words |
Match whole words only |
--use-regexp |
Interpret query as regex |
--repo |
Filter by repository (e.g., facebook/react) |
--path |
Filter by file path (e.g., src/components/) |
--language |
Filter by language (comma-separated, e.g., TypeScript,TSX) |
Global Options
-t, --timeout <ms>: Call timeout (default: 30000)
-o, --output <format>: Output format: text | markdown | json | raw
Search Patterns
Important: This tool searches for literal code patterns, not keywords.
Good searches:
useState( - Find React useState usage
import React from - Find React import statements
async function - Find async function declarations
Bad searches:
react tutorial - Keywords, not code
best practices - Concepts, not patterns
how to use - Questions, not code
For detailed pattern examples and regex usage, see references/api_reference.md.
Common Examples
# Find Authentication Patterns
bun /home/hazeruno/.config/opencode/skills/gh-grep/scripts/grep.ts searchGitHub \
--query "getServerSession" --language "TypeScript,TSX"
# Find Error Boundary Implementations
bun /home/hazeruno/.config/opencode/skills/gh-grep/scripts/grep.ts searchGitHub \
--query "ErrorBoundary" --language "TSX"
# Find useEffect Cleanup with Regex
bun /home/hazeruno/.config/opencode/skills/gh-grep/scripts/grep.ts searchGitHub \
--query "(?s)useEffect\(\(\) => {.*removeEventListener" --use-regexp true
# Find CORS Handling in Flask
bun /home/hazeruno/.config/opencode/skills/gh-grep/scripts/grep.ts searchGitHub \
--query "CORS(" --match-case true --language "Python"
# Search Within Specific Repository
bun /home/hazeruno/.config/opencode/skills/gh-grep/scripts/grep.ts searchGitHub \
--query "createContext" --repo "facebook/react"
Requirements
- Bun runtime
mcporter package (embedded in script)
Resources
scripts/grep.ts - Main CLI tool wrapping grep.app MCP server
references/api_reference.md - Detailed parameter documentation and regex patterns