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https://github.com/shanejonas/openrpc-mpc-server

A Model Context Protocol (MCP) server that provides JSON-RPC functionality through OpenRPC.
https://github.com/shanejonas/openrpc-mpc-server

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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://open-rpc.org).

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:
```bash
npm install
```

Build the server:
```bash
npm run build
```

For development with auto-rebuild:
```bash
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`

```json
{
"mcpServers": {
"openrpc": {
"command": "node",
"args": ["/path/to/openrpc-mcp-server/build/index.js"]
}
}
}
```

### Debugging

Since MCP servers communicate over stdio, debugging can be challenging. We recommend using the [MCP Inspector](https://github.com/modelcontextprotocol/inspector):

```bash
npm run inspector
```

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