SSE-based Server and Client for MCP
This demonstrates a working pattern for SSE-based MCP servers and standalone MCP clients that use tools from them. Based on an original discussion here.
Usage
Note: Make sure to supply ANTHROPIC_API_KEY
in .env
or as an environment variable.
uv run weather.py
uv run client.py http://0.0.0.0:8080/sse
Initialized SSE client...
Listing tools...
Connected to server with tools: ['get_alerts', 'get_forecast']
MCP Client Started!
Type your queries or 'quit' to exit.
Query: whats the weather like in Spokane?
I can help you check the weather forecast for Spokane, Washington. I'll use the get_forecast function, but I'll need to use Spokane's latitude and longitude coordinates.
Spokane, WA is located at approximately 47.6587° N, 117.4260° W.
[Calling tool get_forecast with args {'latitude': 47.6587, 'longitude': -117.426}]
Based on the current forecast for Spokane:
Right now it's sunny and cold with a temperature of 37°F and ...
Why?
This means the MCP server can now be some running process that agents (clients) connect to, use, and disconnect from whenever and wherever they want. In other words, an SSE-based server and clients can be decoupled processes (potentially even, on decoupled nodes). This is different and better fits “cloud-native” use-cases compared to the STDIO-based pattern where the client itself spawns the server as a subprocess.
Installing via Smithery
To install SSE-based Server and Client for Claude Desktop automatically via Smithery:
npx -y @smithery/cli install @sidharthrajaram/mcp-sse --client claude
Server
weather.py
is a SSE-based MCP server that presents some tools based on the National Weather Service APIs. Adapted from the MCP docs’ example STDIO server implementation.
By default, server runs on 0.0.0.0:8080, but is configurable with command line arguments like:
uv run weather.py --host <your host> --port <your port>
Client
client.py
is a MCP Client that connects to and uses tools from the SSE-based MCP server. Adapted from the MCP docs’ example STDIO client implementation.
By default, client connects to SSE endpoint provided in the command line argument like:
uv run client.py http://0.0.0.0:8080/sse
SSE-based Server and Client
Project Details
- sidharthrajaram/mcp-sse
- Last Updated: 4/21/2025
Recomended MCP Servers
OpenAPI Schema Model Context Protocol Server
Databricks MCP Server
A Model Context Protocol (MCP) server that helps read GitHub repository structure and important files.
macOS defaults - Model Context Protocol server
Collection of apple-native tools for the model context protocol.
A Model Context Protocol server that executes commands in the current iTerm session - useful for REPL and...
This is a TypeScript-based Model Context Protocol (MCP) server that implements a virtual pet simulation system. It demonstrates...
MCP server that provides direct access to MySQL databases
An MCP server implementation for accessing Obsidian via local REST API
Model Context Protocol (MCP) server for Gmail