B20 Check MCP Server: Install & Setup

Install B20 Check in Claude Code

Claude Code

claude mcp add --transport http b20-check https://b20check.com/mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "b20-check": {
      "url": "https://b20check.com/mcp"
    }
  }
}

Claude Code

claude mcp add b20-check -- npx -y b20check-mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "b20-check": {
      "command": "npx",
      "args": [
        "-y",
        "b20check-mcp"
      ]
    }
  }
}

Verify B20 tokens on Base: issuer powers, imposter detection, signed EIP-712 verdicts.

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

Local + Remote. Can run locally or be used as a hosted remote server.

Run: claude mcp add --transport http b20-check https://b20check.com/mcp

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