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O

OpenRPC

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Interact with and discover JSON-RPC APIs via [OpenRPC](https://open-rpc.org).

Source Code

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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