SignMaster in Gemini
Google's Gemini can work with your SignMaster account in two places: Gemini CLI in your terminal, and Gemini Enterprise for teams on Google Cloud. Both use SignMaster's MCP server, so you can ask Gemini what's unsigned, start an envelope from a template or line up a reminder, and approve anything that emails people inside SignMaster.
Updated November 9, 2026 · 3 min read
Gemini CLI
- 1
Copy the address
In SignMaster, open Settings › Connect an AI and copy the connector address from the Gemini CLI card.
- 2
Add the server
In your terminal, run gemini mcp add --transport http --scope user signmaster followed by the address. The user scope makes SignMaster available in every folder you open Gemini CLI from.
- 3
Sign in
Start Gemini CLI and run /mcp auth signmaster. Your browser opens a SignMaster page: sign in, choose what Gemini may do and press Allow access.
- 4
Ask away
Back in the terminal, ask in plain words, for example “what's still waiting for signatures in SignMaster?”
Gemini CLI registers itself with SignMaster the first time it signs in, so there's no client ID or secret to copy. Google moved free and Google One users from Gemini CLI to Antigravity CLI in June 2026; SignMaster's setup steps cover Gemini CLI only for now.
Gemini Enterprise
- 1
Make credentials in SignMaster
In Settings › Connect an AI, find the Gemini Enterprise card and choose Create Gemini credentials. It lists the server address, authorization URL, token URL and scopes, and shows a client ID and secret once.
- 2
Add the server in Gemini Enterprise
As a team admin, open Settings & help, pick your team, then Manage team › Connected apps and choose Add MCP Server. Name it SignMaster and paste the server address.
- 3
Fill in OAuth 2.0
Choose OAuth 2.0 and paste the authorization URL, token URL, scopes, client ID and secret from SignMaster. Choose Verify Auth, then Continue.
- 4
Turn it on for the team
Pick a location, choose Add and switch the connection on. Each person signs in to their own SignMaster account the first time Gemini needs it.
Keep the secret like a password
SignMaster stores only a scrambled copy of the secret and can't show it again. If it's lost, create new credentials and update the form in Gemini Enterprise.
Things to ask Gemini
- Which envelopes have been waiting more than a week, and on whom?
- Start a draft from my Deck staining agreement for Priya Shah, priya@example.com.
- Look up Riverside Dental in my contacts.
- How many envelopes did the team send in October?
- Write a short equipment rental agreement and save it to SignMaster as a template.
What waits for you
Questions and drafts run straight away, because they don't reach anyone else. Sending, reminding and voiding are different: Gemini can only ask. SignMaster keeps the request, with the exact people who would get an email, under Settings › Connect an AI until you approve or deny it, and lets it expire if nobody does.
Gemini works with your role's access, minus anything you unticked when you allowed it in. Every app you've connected is listed on the same settings page, where Disconnect cuts it off at once.
Questions? Answers.
Does the everyday Gemini app work with SignMaster?
Google has started letting some Gemini app users add their own MCP servers, depending on country and plan. SignMaster hasn't been tried there yet, so the setups above are Gemini CLI and Gemini Enterprise. Claude and ChatGPT work from their phone apps.
Do I need a paid SignMaster plan?
No. Connect an AI is on every plan. Envelopes you send after Gemini drafts them count like any other, so Free's 3 a month still apply.
Can Gemini send a contract by itself?
No. It can prepare a draft, but sending, reminders and voids wait for your approval in SignMaster every time.
Sources
- Gemini CLI documentation: MCP servers · geminicli.com