Setup guide
Add Signals to ChatGPT as a custom plugin. Four steps, a couple of minutes: add the Signals MCP server, sign in with your Signals account, and pick Signals in a chat.

A ChatGPT plan that supports custom MCP servers (Plus, Pro, Business, Enterprise or Edu), used on the web, and your Signals login. On Business and Enterprise workspaces, an admin may need to allow custom plugins or add Signals for you.
Connector URL
https://meek-energy-pulse-intel.base44.app/api/mcpDownload the icon and upload it in step 2 (ChatGPT takes a PNG under 10 KB; this one fits), so Signals is easy to spot in your + menu.
In ChatGPT on the web, open Plugins (also in the left sidebar). Click Add (top right) and choose Add custom MCP server.
Upload the Signals icon (above), name it Signals and paste the connector URL under Connection → Server URL. Leave Authentication on OAuth, tick “I understand and want to continue”, then click Create as a plugin.
ChatGPT opens the Signals sign-in page. Sign in with the account you use for the Signals app and approve access. You’re returned to ChatGPT with Signals added to your plugins.
Start a new chat, click + (or type @) and choose Signals. Ask your question and end it with “Use Signals” so ChatGPT queries the Signals record rather than answering from memory.
Type “Use Signals” in any prompt. Start with this one: