Improve all readmes (#188)

* Improve all readmes

* Address some of the comments

weather-server-python/README.md

@@ -1,6 +1,31 @@
 # A Simple MCP Weather Server written in Python
 
-See the [Build an MCP server](https://modelcontextprotocol.io/docs/develop/build-server) tutorial for more information.
+A minimal MCP server that exposes US weather data from the [National Weather Service API](https://www.weather.gov/documentation/services-web-api) as two tools:
+
+- `get_forecast` – get the forecast for a location (takes `latitude` and `longitude`)
+- `get_alerts` – get active weather alerts for a US state (takes a two-letter state code)
+
+This example accompanies the [Build an MCP server](https://modelcontextprotocol.io/docs/develop/build-server) tutorial.
+
+## Prerequisites
+
+- Python 3.10+
+- [uv](https://docs.astral.sh/uv/)
+
+## Run the server
+
+```bash
+uv run weather.py
+```
+
+`uv run` creates the virtual environment and installs dependencies on first use.
+
+The server communicates over stdio, so running it directly just waits for a client on stdin. To see it in action, launch it from one of the client examples in this repository, for example:
+
+```bash
+cd ../mcp-client-python
+uv run client.py ../weather-server-python/weather.py
+```
 
 ## Structured content