Signatura

npx add-mcp 'https://mcp.getsignatura.com/mcp'

Before Five. A one-minute film. In it, the AI finds the contract in Sam’s email. AI apps differ here: some fetch a file from your email themselves, others give you a link to upload it to Signatura.

Find

“Find the lease we sent Maria Lopez in March.”

Searches your documents, templates, Library and contacts, and tells you where each one stands.

Prepare

“Turn this Word file into a draft for Alex and Jordan to sign.”

Makes a draft from a template, or from your own file: PDF, Word, PNG or JPEG, up to 25 MB. It can also save a document as a template, or keep it in your Library as a plain file, in the folder you name.

Send

“Send it now, and send the renewal on Monday at 9.”

Checks with you first, showing who it goes to and in what order, then sends now or schedules it for later.

Sign

“Sign the supplier terms Brightline sent me.”

Fills in your answers, then asks for the code Signatura emails you. Nothing is signed without it.

Chase

“Remind everyone who hasn’t signed the NDA.”

Sends reminders, and voids what you no longer need.

Catch up

“What changed since Friday? Any dates coming up?”

Sums up what changed, what’s waiting and the key dates.

Team

“Invite [email protected] to the team.”

Invites and removes members and changes roles, as far as your own role allows.

1. 01

   Open your AI app’s connectors

   Each AI app has a place to add a custom connector. In Grok, go to grok.com/connectors, click New Connector, then Custom. The list below says where for the others.
2. 02

   Paste Signatura’s address

   Paste this address, and name it Signatura if your app asks for a name: https://mcp.getsignatura.com/mcp Copy

On business plans, an admin usually sets it up first: in Grok Business and Enterprise an admin adds the connector, in ChatGPT Business, Enterprise and Edu an admin or owner adds it and publishes it for the workspace, and in Claude Team and Enterprise an owner adds Signatura once, then each member clicks Connect. Everyone still signs in to Signatura as themselves.

You choose what it can do

Each connection starts on a Signatura page, where you sign in and tick what the app may do.

See everything it did

Settings → AI apps lists every connected app and its recent activity. Turn on a daily email for the summary.

Disconnect any time

Cut off one app, or all of them at once.

Owners set the rules

Team owners can turn AI apps off for the team or for one member, decide whether AI apps may read document contents, and see and disconnect members’ apps.

Alerts when something’s unusual

Signatura emails you when a connected app sends to a new domain, adds 10 or more new recipients in an hour, or voids or deletes 5 or more documents in an hour.

Sending pauses by itself

If a connection’s emails bounce 3 times in a day, or draw a single complaint, its sending pauses.

Some things stay off-limits

It can’t change billing, delete your account, or change security or AI settings.

Grok

grok.com

Every Grok plan, free included. On Business and Enterprise, an admin adds the connector first.

Add it: grok.com/connectors → New Connector → Custom

ChatGPT

chatgpt.com

Business, Enterprise and Edu: an admin or owner adds it under Plugins and publishes it for the workspace. On Pro, OpenAI allows look-ups only. Not on Free or Go.

Add it: chatgpt.com/plugins → + → Add custom MCP server

Claude

Web, desktop, phone and Cowork

Every plan. Claude Free allows one custom connector. On Team and Enterprise, an owner adds it, then each member connects.

Add it: Customize → Connectors → + Add → Add custom connector

Gemini

gemini.google.com and the Gemini app

In the US, 18 or over, with a personal Google account, in English, and with Keep Activity on. Not with a work or school account.

Add it: Settings → Connected Apps → Add a custom app

Cursor

The code editor

Cursor’s docs don’t tie it to a plan.

Add it: The Customize page, or a url in mcp.json

Claude Code

Through your Claude account

Pro, Max, Team, Enterprise or a Console account. Not on Claude Free.

Add it: Uses the connector in your Claude account

Built for more AI apps

Signatura is built to connect with these too.

Codex (OpenAI)

Every ChatGPT plan; Free and Go have low limits.

Perplexity

Pro, Max and Enterprise; on Enterprise, an admin allows it first. Not on Free.

Le Chat (Mistral)

On Free, Pro and Student, the account owner adds it; on Team and Enterprise, an admin does.

Microsoft 365 Copilot

Each user needs a Microsoft 365 Copilot licence. A Microsoft admin sets it up with credentials a Signatura team owner creates.

Microsoft Copilot Studio

A paid licence.

Gemini Enterprise

A Google admin adds it, with credentials a Signatura team owner creates.

VS Code with GitHub Copilot

Every Copilot plan, Free included. On Business and Enterprise, an admin turns on MCP servers first.

GitHub Copilot CLI

Every Copilot plan. On Business and Enterprise, an admin turns it on.

Gemini CLI

Free with a Google account.

Zed

Free.

Plan rules are each AI company’s own and can change. Checked October 26–29, 2026.

Good to know

Bring your own AI.

Signatura doesn’t include an AI or AI credits. You use your own AI app and plan.

Your AI company’s terms cover your chats.

What you share in your AI app is handled under that company’s terms, not ours.

Your signers need nothing new.

They sign from the email link as always, with no AI app and no account.

Every plan, free trial included.

If a trial or plan ends, the connection becomes read-only, like the web app.

Fair-use limits apply.

There are limits on how much a connection can do in a short time.

Not for health records.

Don’t use it for protected health information (PHI).

Questions, answered

Does Signatura come with an AI?

No. You connect the AI app you already use. Grok, ChatGPT, Claude, Claude Code, Gemini and Cursor work today, and the list above shows which plans each one allows.

Can my AI sign for me without asking?

No. Signing needs a 6-digit code that Signatura emails you, together with everything that will be signed. Your AI can sign only once you give it that code.

Does my AI check with me before it sends?

Signatura first gives your AI a summary of who the document goes to, and in what order, and tells it to show you and ask whether to go ahead. Nothing is sent until your AI asks again with that summary’s confirmation, and if anything changed in between, Signatura gives it a new summary instead. Signatura also emails you about unusual activity, and pauses a connection’s sending if its emails bounce or draw a complaint.

Can my AI read my documents?

Only if you allow it. When you connect, you choose whether your AI may read what’s inside your documents, and a team owner can turn that off for the whole team.

Do the people I send documents to need an AI app?

No. They sign from the email link as always. They don’t need an AI app or a Signatura account.

Which Signatura plans include it?

Every plan, free trial included. If a trial or plan ends, the connection becomes read-only.

How do I disconnect?

In Signatura, open Settings → AI apps. You can disconnect one app, or all of them at once.

Is this an MCP server?

Yes. MCP (Model Context Protocol) is the open standard AI apps like Grok, ChatGPT and Claude use to connect to other services. Signatura’s address is https://mcp.getsignatura.com/mcp.

Grok, ChatGPT, Codex, Claude, Claude Code, Gemini, Cursor and the other AI app names on this page are trademarks of their owners. Signatura is not affiliated with or endorsed by any of them.