OpenRPC
What is OpenRPC
The OpenRPC MCP Server is a server that implements the Model Context Protocol, providing JSON-RPC functionality through the OpenRPC specification. It enables communication with various methods defined in the API using a standardized format.
Use cases
The OpenRPC MCP Server can be used for integrating various services that support JSON-RPC, facilitating interactions in applications that require remote procedure calls. It is suitable for developers needing to access backend services or APIs in a structured manner.
How to use
To set up the OpenRPC MCP Server, install the necessary dependencies with npm install, build the server with npm run build, and for development, use npm run watch for auto-rebuild. To integrate with Claude Desktop, add a specific configuration to the claude_desktop_config.json file.
Key features
Key features include the rpc_call tool for invoking arbitrary JSON-RPC methods and the rpc_discover tool for listing available methods on a server. The server’s functionality is based on the OpenRPC specification, ensuring compatibility with a wide range of integrations.
Where to use
The OpenRPC MCP Server can be used in applications that interact with APIs using JSON-RPC, particularly for projects requiring dynamic method invocation and automatic discovery of available RPC methods. It is suitable for both development environments and production deployments.
Overview
What is OpenRPC
The OpenRPC MCP Server is a server that implements the Model Context Protocol, providing JSON-RPC functionality through the OpenRPC specification. It enables communication with various methods defined in the API using a standardized format.
Use cases
The OpenRPC MCP Server can be used for integrating various services that support JSON-RPC, facilitating interactions in applications that require remote procedure calls. It is suitable for developers needing to access backend services or APIs in a structured manner.
How to use
To set up the OpenRPC MCP Server, install the necessary dependencies with npm install, build the server with npm run build, and for development, use npm run watch for auto-rebuild. To integrate with Claude Desktop, add a specific configuration to the claude_desktop_config.json file.
Key features
Key features include the rpc_call tool for invoking arbitrary JSON-RPC methods and the rpc_discover tool for listing available methods on a server. The server’s functionality is based on the OpenRPC specification, ensuring compatibility with a wide range of integrations.
Where to use
The OpenRPC MCP Server can be used in applications that interact with APIs using JSON-RPC, particularly for projects requiring dynamic method invocation and automatic discovery of available RPC methods. It is suitable for both development environments and production deployments.
Content
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.