Rust MCP Server + Inspector Example: SSE Transport with an Add T…

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RGGH

关于 Rust MCP Server + Inspector Example: SSE Transport with an Add Tool

Rig MCP Server Example (April 7, 2025)

#rust#rig#mcp-server

Rust MCP Server + Inspector Example: SSE Transport with an Add Tool 配置

使用下面的配置,将此服务器添加到你的 MCP 客户端。

{
  "mcpServers": {
    "rig-mcp-server": {
      "command": "npx",
      "args": [
        "@modelcontextprotocol/inspector",
        "sse",
        "http://127.0.0.1:3001/sse"
      ]
    }
  }
}

Rust MCP Server + Inspector Example: SSE Transport with an Add Tool 工具

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点击上方按钮,在临时沙箱中运行此服务器并实时获取工具列表。

概览

What is 🔍 Rust MCP Server + Inspector Example: SSE Transport with an Add Tool?

This project demonstrates how to set up an MCP (Model Context Protocol) server and client using Server-Sent Events (SSE) for communication. It includes a simple tool that adds two numbers and integrates with the RIG agent for LLM prompting.

How to use 🔍 Rust MCP Server + Inspector Example: SSE Transport with an Add Tool?

Clone the repository and run cargo run. In a separate terminal, start the MCP Inspector with npx @modelcontextprotocol/inspector sse http://127.0.0.1:3001/sse. Then open http://localhost:5173 in a web browser to view the Inspector UI.

Key features of 🔍 Rust MCP Server + Inspector Example: SSE Transport with an Add Tool

Sets up a custom MCP server using ServerSseTransport
Connects an MCP client to the server via SSE
Registers a custom Add tool that adds two numbers
Lists registered tools through MCP protocol
Integrates with the RIG agent and OpenAI LLM

Use cases of 🔍 Rust MCP Server + Inspector Example: SSE Transport with an Add Tool

Learning how to implement an MCP server with SSE transport
Prototyping and testing custom MCP tools in a sandboxed environment
Integrating an LLM agent with external tools via the MCP protocol
Debugging MCP servers using the inspector web interface

常见问题

What does this project do exactly?

It sets up an MCP server with an SSE transport, registers a tool to add two numbers, connects an MCP client, and prompts a RIG agent (using OpenAI) to invoke that tool.

What dependencies are required?

Rust with tokio, anyhow, serde_json, `mcp_core`, `mcp_core_macros`, and `rig`. The MCP Inspector requires Node.js to run `npx`.

What transport does the server use?

Server-Sent Events (SSE) on port 3001, with the inspector proxy listening on port 3000 and a web UI on port 5173.

Does this require an API key?

Yes, the RIG agent uses an OpenAI model, so a valid OpenAI API key must be set in the environment.

How can I test the tool manually?

After starting the server and inspector, visit http://localhost:5173 to see the tool list and invoke the `Add` tool. The agent also runs a prompt `"Add 10 + 10"` and prints the response.

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