HPP x402 MCP Bridge MCP Server

What the code does

We read the source, 1 h ago · rules 3dff92dd89df

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

postinstall: patch-package || true

  const res = spawnSync(bin, args, { cwd: opts.cwd, encoding: "utf8" });

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Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

claude mcp add x402-mcp-bridge -- npx -y @hpp-io/x402-mcp-bridge

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

[mcp_servers.x402-mcp-bridge]
command = "npx"
args = ["-y", "@hpp-io/x402-mcp-bridge"]

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

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

This one needs environment variables set before it will start: DELEGATE_PRIVATE_KEY (Delegate EOA private key used to sign payments. Auto-created in the OS keychain if unset.), HPP_NETWORK (Target network: eip155:181228 (HPP Sepolia, default) or eip155:190415 (HPP Mainnet).), RESOURCE_SERVER_URL (Optional upstream MCP server to proxy. Omit to expose only the local tools.), SAFE_ADDRESS (Safe address for governance (Safe) mode. Set together with ALLOWANCE_MODULE_ADDRESS.), ALLOWANCE_MODULE_ADDRESS (Safe AllowanceModule address for governance (Safe) mode. Set together with SAFE_ADDRESS.). The author declared them in the registry entry; get the values from the project itself.