Find real-world code examples across millions of GitHub repositories. Use when the user wants to see how others implement something, find usage patterns, or discover code examples in the wild.
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---
name: code-examples
description: Find real-world code examples across millions of GitHub repositories. Use when the user wants to see how others implement something, find usage patterns, or discover code examples in the wild.
---
# Code Examples
Find real-world code examples across millions of public GitHub repositories using grep.app.
**When to activate:**
- User wants to see real-world code examples
- User asks "how do others implement X?"
- User wants to find usage patterns for a library/API
- User needs production code examples (not docs)
**API endpoint:**
```bash
curl -s "https://grep.app/api/search?q={query}&page=1" | jq '.hits.hits[:5]'
```
**Parameters:**
| Parameter | Description |
| ---------------- | --------------------------------------------------------------------- |
| `q` | Search query (required) |
| `page` | Page number for pagination |
| `regexp` | `true` for regex search |
| `case` | `true` for case-sensitive |
| `f.lang` | Language filter (**capitalized**, e.g., `TypeScript`, `Go`, `Python`) |
| `f.repo.pattern` | Filter by repository pattern |
| `f.path.pattern` | Filter by file path pattern |
**Examples:**
Search for useEffect usage in TypeScript:
```bash
curl -s "https://grep.app/api/search?q=useEffect&f.lang=TypeScript&page=1" | jq '.hits.hits[:3]'
```
Search for Go error handling patterns:
```bash
curl -s "https://grep.app/api/search?q=if%20err%20!=%20nil&f.lang=Go&page=1" | jq '.hits.hits[:3]'
```
Search within a specific repo:
```bash
curl -s "https://grep.app/api/search?q=createContext&f.repo.pattern=facebook/react&page=1" | jq '.hits.hits[:3]'
```
**Response format:**
- `hits.hits[]` - Array of search results
- Each hit contains: `repo.raw` (repo name), `path.raw` (file path), `content.snippet` (code snippet)
**Note:** Returns max 1000 results. For documentation, use the documentation-lookup skill instead.
