Context7 MCP

Context7 MCP

Get up-to-date library documentation to reduce AI hallucinations.

What is Context7?

Context7 is an MCP server that provides AI assistants with access to the latest documentation for popular libraries and frameworks. It helps reduce "hallucinations" by providing accurate, version-specific information.

Setup

Configure mcporter with Context7 HTTP endpoint

Add to ~/.config/mcporter.json or project config:

{
  "mcpServers": {
    "context7": {
      "url": "https://mcp.context7.com/mcp",
      "headers": {
        "CONTEXT7_API_KEY": "YOUR_API_KEY"
      }
    }
  }
}

Get API key from: https://context7.com

Usage

Step 1: Find library ID

mcporter call context7.resolve-library-id --args '{"query":"android compose","libraryName":"android-compose"}'

Step 2: Query documentation

mcporter call context7.get-library-docs --args '{"libraryId":"LIBRARY_ID","query":"Column layout"}'

List available tools

mcporter list context7 --schema

Example Queries

Android Compose

mcporter call context7.resolve-library-id --args '{"query":"android compose","libraryName":"android-compose"}'
mcporter call context7.get-library-docs --args '{"libraryId":"/websites/developer_android_develop_ui_compose_designsystems","query":"Column"}'

Next.js

mcporter call context7.resolve-library-id --args '{"query":"nextjs","libraryName":"nextjs"}'
mcporter call context7.get-library-docs --args '{"libraryId":"LIBRARY_ID","query":"App Router"}'

React

mcporter call context7.resolve-library-id --args '{"query":"react","libraryName":"react"}'
mcporter call context7.get-library-docs --args '{"libraryId":"LIBRARY_ID","query":"hooks"}'

When to Use

• Writing code with specific library APIs
• Need to verify current API methods
• Avoiding deprecated function usage
• Getting accurate code examples

Tips

• Use the library ID from step 1 for precise queries
• Ask specific questions (e.g., "Column layout parameters" instead of just "Column")
• Context7 returns code snippets you can reference directly