MetaMask Embedded Wallets (Web3Auth) MCP server

MetaMask Embedded Wallets MCP Server

Build MetaMask Embedded Wallets integrations faster by giving your AI coding assistant live access to the documentation and deep knowledge of the SDK.

There are two things to set up:

1. Skill — Teaches your AI assistant how to think about the SDK: architecture, framework quirks, key derivation rules, and common mistakes. No code in the skill; the MCP provides that.
2. MCP server — Gives your AI assistant real-time access to search docs, fetch examples, and look up SDK types.

MCP Tools

Skill

The skill teaches your AI assistant the mental model for MetaMask Embedded Wallets. It includes SDK selection logic, key derivation rules, authentication concepts, platform quirks, and common mistakes that aren't obvious from the docs alone.

Tip: For the best experience, use the MCP server alongside the skill so that your LLM can fetch live docs

and examples rather than relying on static text.

Universal install (works with 40+ agents)

npx skills add web3auth/skill

The skills CLI by Vercel detects your active AI agent and installs to the right directory automatically — Cursor, Claude Code, Copilot, Kiro, Cline, Codex, Antigravity, and 40+ more.

To install for target a specific agent:

npx skills add web3auth/skill -a cursor     # Cursor only
npx skills add web3auth/skill -a claude-code # Claude Code only

MCP Server Setup

Cursor

The fastest way is one click:

Or install via Cursor Marketplace — search "MetaMask Embedded Wallets".

Or add it manually. Open Cursor Settings → Tools & Integrations → MCP and add:

{
  "mcpServers": {
    "web3auth": {
      "url": "https://mcp.web3auth.io"
    }
  }
}

VS Code (GitHub Copilot)

Install from the Visual Studio Marketplace — search "MetaMask Embedded Wallets", or:

code --install-extension Web3Auth.metamask-embedded-wallets

Or use the one-click install URL:

vscode:mcp/install?{"name":"web3auth","url":"https://mcp.web3auth.io"}

Or add manually to your workspace .vscode/mcp.json:

{
  "servers": {
    "web3auth": {
      "type": "http",
      "url": "https://mcp.web3auth.io"
    }
  }
}

JetBrains (IntelliJ, PyCharm, WebStorm, Android Studio)

Install from the JetBrains Marketplace — search "MetaMask Embedded Wallets".

Or add manually in Settings → Tools → AI Assistant → Model Context Protocol (MCP):

{
  "mcpServers": {
    "web3auth": {
      "url": "https://mcp.web3auth.io",
      "transport": "http"
    }
  }
}

Claude Code CLI

claude mcp add --transport http web3auth https://mcp.web3auth.io

Or add manually to your project's claude.json:

{
  "mcpServers": {
    "web3auth": {
      "url": "https://mcp.web3auth.io"
    }
  }
}

Claude Desktop

Open your Claude Desktop configuration file:

• macOS: ~/Library/Application Support/Claude/claudedesktopconfig.json
• Windows: %APPDATA%\Claude\claudedesktopconfig.json

Add the server to the mcpServers section:

Shortened. The full README is on GitHub.