# Claude Code Facts

A collection of interesting and useful facts, tips, and tools for working with Claude and Claude Code — including plugins, MCP servers, and practical usage patterns.

## MCP Servers

### Context7

Up-to-date documentation and code examples for any library, available directly in your Claude Code session.

- **Website:** https://context7.com/
- **Setup:**
  ```bash
  claude mcp add --scope user --transport http context7 https://mcp.context7.com/mcp --header "CONTEXT7_API_KEY: <YOUR_API_KEY>"
  ```

- **Note:** API key can be created for free after signing in at [context7.com](https://context7.com/)

### AST Index

Fast code search skill for Claude Code — find classes, symbols, usages, implementations, and more across large codebases.

- **Repository:** https://github.com/defendend/Claude-ast-index-search