Set up Context7 MCP in Claude Code

Pull up-to-date documentation and code examples for any library directly into your prompt context using the Context7 API.

Locate the config file

Claude Code reads MCP server configuration from the following file:

~/.claude.json

Create this file if it does not already exist.

You can configure Context7 MCP using the CLI command or by editing the config file directly.

Option A: CLI command

bash

claude mcp add context7-mcp -- npx -y @upstash/context7-mcp

Option B: Config file

json

{
  "mcpServers": {
    "context7-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@upstash/context7-mcp"
      ]
    }
  }
}

No environment variables needed. Context7 MCP works out of the box without any API keys or tokens.

Restart Claude Code. Context7 MCP should appear in your MCP server list with 2 tools available.

This server adds approximately 1,030 tokens to your context window for tool definitions.