Connect Unitag to Gemini

Gemini is two different situations, and it is worth being clear about which one you are in.

The Gemini app — gemini.google.com and the mobile apps — connects to other services through extensions that Google builds and ships. It does not yet take an arbitrary third-party connector with its own sign-in, so the Unitag connector cannot be added there. Gemini Enterprise can take it: an administrator adds it once for the whole organisation. Gemini CLI is not supported by the connector yet.

In the Gemini app

Without the connector, Gemini can still be made to answer Unitag questions accurately — from the documentation rather than from your account. Every page of this site has a plain-text twin written for exactly that.

Create a Gem, and in its instructions tell it to answer Unitag questions from the index at the address below, following the links it lists.

https://www.unitag.io/documentation/llms.txt

What this gives you is a reliable answer about the product. It cannot see your QR codes, your scan data or your campaigns, and it cannot change anything — for that you need the connector.

Gemini Enterprise

Gemini Enterprise takes the Unitag connector as a custom MCP server. An administrator adds it once for the organisation; each person then signs in with their own Unitag account, and the assistant sees only what that account can see.

Unlike ChatGPT and Claude, Gemini Enterprise does not register itself with Unitag, so the connection details are entered by hand. In the Google Cloud console, open Gemini Enterprise, add a data store of the custom MCP server type, and fill it in as follows:

MCP server URL: the connector address.

https://mcp.unitag.io/mcp

Client ID:

42deo5aspdubqjubemlal7iv54

Client secret: leave it empty. Unitag issues no secret for this client.

Authorization URL:

https://auth.unitag.io/oauth2/authorize

Token URL:

https://auth.unitag.io/oauth2/token

Scopes: add both. Leave out the second one if the assistant should only read, never change anything.

https://mcp.unitag.io/mcp/read

https://mcp.unitag.io/mcp/write

PKCE support: tick it. Unitag refuses a sign-in without it.

Save the data store and add it to your Gemini Enterprise app. The first time someone uses the connector, Gemini Enterprise opens the Unitag sign-in page: they log in as usual and approve the access it asks for.