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

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

Related MCP server: MCP Server

Install dependencies:

npm install

Build the server:

npm run build

For development with auto-rebuild:

npm run watch

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"] } } }

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.

A

security – no known vulnerabilities

A

license - permissive license

A

quality - confirmed to work