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How to add the PubMed (Smithery) MCP server to ChatGPT

Server URL: https://pubmed.run.tools
Sign-in: We tested it with an API key sent in the api_key query parameter of the URL (a Bearer header was rejected in our test). Treat the full URL as a secret.
Our hands-on result: Partial 13 of 14 tasks passed, tested Oct 17, 2026 with MCP TypeScript SDK (reference client).

ChatGPT setup

https://pubmed.run.tools?api_key=YOUR_SMITHERY_API_KEY
  1. Open Plugins on chatgpt.com, click the plus button, then Add custom MCP server. On some plans you first turn on Developer mode under Settings.
  2. Name it ai-smithery-pubmed and enter the URL: https://pubmed.run.tools?api_key=YOUR_SMITHERY_API_KEY
  3. Set authentication to none; the key is in the URL.
  4. Tick the risk acknowledgement, create it, then start a new chat and pick it with @.

We ran the hands-on test in a reference client, not in ChatGPT. This config follows ChatGPT's documented format for remote (Streamable HTTP) servers. If it fails for you, tell us and we will retest.

Same server, other clients

Full PubMed (Smithery) test report | Compare all tested connectors | Connector Weather