MCP Server - ChatGPT
ChatGPT connects to remote MCP servers on the website and the desktop app.
Requirements
Developer mode must first be enabled to add custom MCP servers. This is available on all plan tiers.
Setup
Navigate and sign in to ChatGPT .
Open Security settings and toggle Developer mode on.
Go to ChatGPT Plugin page and select the + button.
Fill in the details below, and select the checkbox.
Copy the following URL and description into the form. All other options may remain default.https://mcp.api.xweather.com/mcp
Access real-time, forecast, and historical weather.
Select Create. On the Authorization page, select Continue and enter your Xweather API credentials.
These may be found in the API Keys section of the Xweather account portal.
By default, all Weather tools will be enabled. Please refer to the Authentication page for more information about how to construct this URL to filter out the tools to best suit your use case.
If successful, you should see this small banner appear at the top of the page.
Try it out in a new chat
The new connection appears under Drafts on the Plugins page.
Recommended prompts
- “What is the hour-by-hour forecast for ORD after 18:00 local time?”
- “Create a markdown briefing on air quality in the Twin Cities today.”
- “Suggest three outdoor contingency plans given lightning risk near Austin.”
Troubleshooting
- ChatGPT cannot connect: Confirm the URL includes the
/mcppath and that the endpoint is reachable over public HTTPS.npx @modelcontextprotocol/inspector@latestis a quick way to verify the server independently. - 429 responses: Rate limits apply per API key. Slow retries or request an upgrade via the Xweather dashboard.