ZetlynConnect
Where your ChatGPT plan lets you add your own connectors (MCP servers), add one with the URL https://zetlyn.com/mcp. ChatGPT opens Zetlyn's sign-in, by email link, Google or Apple; allow ChatGPT, and the tools are there. The exact place of the setting in ChatGPT changes from time to time; look for connectors or apps in its settings.
What to ask
- "Tell me when this product is back in stock."
- "Watch the GitHub releases of my framework and tell me about new versions."
- "Which pages am I watching, and what do they say now?"
Without signing in through ChatGPT
A program, or a client that cannot sign in, uses an API key instead. Make one under Account, API keys, and send it as Authorization: Bearer zk_…. The HTTP API is described in the docs and openapi.json.