Connect Pennyweight to Gemini

We’ll be straight with you: Gemini’s support for custom AI connectors is more limited than Claude’s or ChatGPT’s right now. Here is what actually works today.

The Gemini app (web & mobile): not yet

The consumer Gemini app does not currently let you add a custom or remote connector. Its built-in connectors are a fixed, Google-curated set, and there is no field to paste your own server URL. If that changes, we’ll update this page. For now, the Gemini app can’t connect to Pennyweight.

The working path: Gemini’s command-line tool

If you’re comfortable with a terminal, the Gemini CLI supports remote MCP servers with sign-in. Add Pennyweight to your ~/.gemini/settings.json:

• Under mcpServers, add an entry named pennyweight with "httpUrl": https://mcp.pennyweight.ai and an "oauth": { "enabled": true } block.
• Run gemini, then use the /mcp command to see the connection and /mcp auth pennyweight to sign in (it opens your browser; complete two-factor and your passphrase).

Heads-up: a Google transition is underway

Google is moving free, Pro, and Ultra users off the Gemini CLI to a new tool called Antigravity CLI. If your Gemini CLI stops working, switch to Antigravity CLI — the setup is the same idea, but the config field is serverUrl instead of httpUrl. (Antigravity is new and remote sign-in can be rough around the edges; if you hit trouble, Claude or ChatGPT are the smoother options today.)

Our recommendation

Until Gemini’s app supports custom connectors, we suggest using Claude or ChatGPTfor the smoothest Pennyweight experience. We’ll expand this guide the moment Gemini does.