Information
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.discoverspecification - Lists all methods on a given server
- Uses OpenRPC's
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.