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2025-02-03

A Model Context Protocol (MCP) server that provides JSON-RPC functionality through OpenRPC.

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OpenRPC MCP Server

A Model Context Protocol (MCP) server that provides JSON-RPC functionality through OpenRPC.

https://github.com/user-attachments/assets/3447175a-f921-4ded-8250-b611edb2fb67

Features

Tools

  • rpc_call - Call arbitrary JSON-RPC methods
    • Specify server URL, method name, and parameters
    • Returns JSON-formatted results
  • rpc_discover - Discover available JSON-RPC methods
    • Uses OpenRPC's rpc.discover specification
    • Lists all methods on a given server

Development

Install dependencies:

npm install

Build the server:

npm run build

For development with auto-rebuild:

npm run watch

Installation

To use with Claude Desktop, add the server config:

On MacOS: ~/Library/Application Support/Claude/claude_desktop_config.json On Windows: %APPDATA%/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "openrpc": {
      "command": "npx",
      "args": ["-y", "openrpc-mcp-server"]
    }
  }
}

Debugging

Since MCP servers communicate over stdio, debugging can be challenging. We recommend using the MCP Inspector:

npm run inspector

The Inspector will provide a URL to access debugging tools in your browser.

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    Reviews

    1 (1)
    Avatar
    user_lbYpN6Xn
    2025-04-15

    I have been using Puppeteer by modelcontextprotocol for my testing and automation needs, and it has been an exceptional tool. The seamless integration and intuitive interface make my development process quicker and more efficient. Highly recommend for anyone in need of a reliable automation solution. Check it out at their official link!