Update proxy setup instructions in README

Author: kesku

README.md

@@ -136,45 +136,38 @@ If you are running this server at work—especially behind a company firewall or
 
 **1. Get your proxy details**
 
-- Ask your IT department for your HTTP(S) proxy address and port.
+- Ask your IT department for your HTTPS proxy address and port.
 - You may also need a username and password.
 
 **2. Set the proxy environment variable**
 
 The easiest and most reliable way for Perplexity MCP is to use `PERPLEXITY_PROXY`. For example:
 
 ```bash
-export PERPLEXITY_PROXY=http://your-proxy-host:8080
+export PERPLEXITY_PROXY=https://your-proxy-host:8080
 ```
 
-- If your proxy needs a username and password, use:
-  ```bash
-  export PERPLEXITY_PROXY=http://username:password@your-proxy-host:8080
-  ```
+If your proxy needs a username and password, use:
+
+```bash
+export PERPLEXITY_PROXY=https://username:password@your-proxy-host:8080
+```
 
 **3. Alternate: Standard environment variables**
 
 If you'd rather use the standard variables, we support `HTTPS_PROXY` and `HTTP_PROXY`.
 
 > [!NOTE]
->The server checks proxy settings in this order: `PERPLEXITY_PROXY` → `HTTPS_PROXY` → `HTTP_PROXY`. If none are set, it connects directly to the internet.
+> The server checks proxy settings in this order: `PERPLEXITY_PROXY` → `HTTPS_PROXY` → `HTTP_PROXY`. If none are set, it connects directly to the internet.
+> URLs must include `https://`. Typical ports are `8080`, `3128`, and `80`.
 
 ## Troubleshooting
 
 - **API Key Issues**: Ensure `PERPLEXITY_API_KEY` is set correctly
 - **Connection Errors**: Check your internet connection and API key validity
 - **Tool Not Found**: Make sure the package is installed and the command path is correct
 - **Timeout Errors**: For very long research queries, set `PERPLEXITY_TIMEOUT_MS` to a higher value
-- **Proxy Issues**: If you're behind a corporate firewall and experience connection errors, you likely need to set up a proxy:
-  - Obtain your proxy server address and port from your IT department.
-  - Set the environment variable before running the server, e.g.:
-    - `export PERPLEXITY_PROXY=http://proxy-address:port`
-    - If authentication is needed: `export PERPLEXITY_PROXY=http://username:password@proxy-address:port`
-    - Typical proxy ports include 8080, 3128, or 80.
-  - The format for authenticated proxies is:  
-    `http://username:password@proxy-host:port`
-  - Double-check the address, port, and credentials if connections fail or time out.
-  - If you continue to have issues, your firewall may be blocking traffic; ask IT if traffic for `api.perplexity.ai` is being restricted.
+- **Proxy Issues**: Verify your `PERPLEXITY_PROXY` or `HTTPS_PROXY` setup and ensure `api.perplexity.ai` isn’t blocked by your firewall.
 
 For support, visit [community.perplexity.ai](https://community.perplexity.ai) or [file an issue](https://github.com/perplexityai/modelcontextprotocol/issues).