xby-skill/xby--rpc: OpenRPC-Based JSON-RPC MCP Server Plugin

`xby-skill/xby--rpc` is an MCP server plugin based on the OpenRPC specification, designed to enable the DSH large model to directly invoke remote JSON-RPC services. It provides three core functions: setting an API key, executing arbitrary method calls, and automatically discovering service capabilities. Users can interact by specifying the server address and method through conversational prompts. The plugin supports installation from GitHub, a local directory, or a cordis.patch.yml file; an API key must be obtained from the official website before use.