Install

Stand In in ChatGPT

Turn on Developer mode, then add Stand In as a custom MCP app.

Developer mode · Plus, Pro, Business, Enterprise, Edu. Web only

Developer mode is off by default, and it lives under Security rather than anywhere near Connectors, which is the step everyone misses.

  1. SettingsSecurity and login → turn on Developer mode.
  2. SettingsPlugins (or go straight to chatgpt.com/plugins) → the + button.
  3. Name it Stand In, add a one-line description, and paste the MCP server URL below.
https://standin.app/api/mcp

The server must be reachable over HTTPS. Developer mode is web only.

Then just talk to it

Once it is connected, Stand In is something you say, not something you open.

  • “Read this capsule: <link>”
  • “Ask <link> what the refund policy is.”
  • “Make a stand-in from these notes and give me the review link.”
Other clients

Somewhere else instead?

Same two URLs, every client.

Full protocol for machines at /llms.txt. Tokens live at /home/connect.