Context7

Search and retrieve library documentation using the Context7 API. Get relevant, up-to-date documentation snippets for any programming library.

Setup

1. Create an account at https://context7.com/dashboard
2. Create an API key
3. Add to your shell profile (~/.profile or ~/.zprofile for zsh):

   export CONTEXT7_API_KEY="your-api-key-here"
   

4. Install dependencies (run once):

   cd {baseDir}
   npm install
   

Search Libraries

Find libraries by name to get their IDs:

{baseDir}/search.js "react"                    # Search for React libraries
{baseDir}/search.js "nextjs" -n 5              # Get 5 results
{baseDir}/search.js "typescript"               # Search TypeScript libs

Options

• -n <num> – Number of results (default: 3, max: 20)

Get Documentation

Retrieve documentation for a specific library:

{baseDir}/docs.js "/facebook/react" "how to use useState"
{baseDir}/docs.js "/vercel/next.js" "app router setup"
{baseDir}/docs.js "/microsoft/typescript" "generics" --format txt

Options

• --format <type> – Output format: json (default) or txt

Complete Workflow

1. First, search for the library to find its ID:

   {baseDir}/search.js "react"
   

2. Then, get documentation using the library ID:

   {baseDir}/docs.js "/facebook/react" "useEffect cleanup"
   

Output Format

Search Results

--- Library 1 ---
ID: /facebook/react
Name: React
Description: A JavaScript library for building user interfaces
Snippets: 1250
Trust Score: 95
Versions: v18.2.0, v17.0.2

--- Library 2 ---
...

Documentation Results (JSON format)

--- Doc 1 ---
Title: Using the Effect Hook
Source: react.dev/reference/react/useEffect
Content:
  The Effect Hook lets you perform side effects...

--- Doc 2 ---
...

Documentation Results (Text format)

[Plain text documentation ready for LLM context]

When to Use

• Getting up-to-date documentation for libraries
• Understanding API usage and best practices
• Finding code examples and patterns
• Learning about specific library features