x402 Universal Payer

MCP server · by nirholas

Web APIs npm v1.0.2

Pay any x402 endpoint on the open web: auto-paying bridge with Bazaar discovery and spend caps.

View source ↗ Website ↗ More servers

Install

Run one of the commands below, then add the client config underneath.

npmnpx -y @three-ws/mcp-bridge

Client configuration

Paste into Claude Desktop, Cursor (mcp.json), VS Code or any MCP client, then restart the client.

mcpServers{
  "mcpServers": {
    "x402-bridge": {
      "command": "npx",
      "args": [
        "-y",
        "@three-ws/mcp-bridge"
      ]
    }
  }
}

About this server

x402 Universal Payer is listed in the Web APIs category of the MCPNav directory. It is distributed as npm and can be loaded by any client that speaks the Model Context Protocol.

Typical uses include giving your assistant scoped access to the corresponding service so it can answer questions and take actions with real data instead of guessing. Always review what a server can access before you enable it — see our MCP security guide.

Frequently asked questions

What is the x402 Universal Payer MCP server?

x402 Universal Payer is an MCP server by nirholas. Pay any x402 endpoint on the open web: auto-paying bridge with Bazaar discovery and spend caps.

How do I install x402 Universal Payer?

Install it with: npx -y @three-ws/mcp-bridge. Then add the JSON config to your client's MCP settings and restart the client.

Is x402 Universal Payer free to use?

The MCP server itself is free to install. The source is public on https://github.com/nirholas/three.ws. Any third-party API it calls (such as a search or maps API) may require its own key and billing.

Which clients support x402 Universal Payer?

Any MCP-compatible client can use it, including Claude Desktop, Cursor, VS Code, Windsurf and custom agents.