X402 MCP Server: Install & Setup

Install X402 in Claude Code

Claude Code

claude mcp add carboncashmere-x402 -- npx -y @carbon-cashmere/x402-mcp

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

{
  "mcpServers": {
    "carboncashmere-x402": {
      "command": "npx",
      "args": [
        "-y",
        "@carbon-cashmere/x402-mcp"
      ]
    }
  }
}

Frequently asked questions

What does the X402 MCP server do?

177 crypto market intel endpoints with auto x402 USDC micropayments from your AI agent

Is the X402 MCP server free?

Probably not entirely. The listing mentions pay-per-call, credits or a subscription. Check the provider for current pricing.

Does X402 run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add X402 to Claude Code?

Run: claude mcp add carboncashmere-x402 -- npx -y @carbon-cashmere/x402-mcp

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