# Mary MCP: Use Mary in Slack and Email

Source: https://maito.app/integrations/mary

Connect the Mary MCP server to Maito with one sign-in, and your whole team can use it from Slack or email: “Build a timeline of key events from the Acme dispute documents.”

Mary organizes the facts of a legal matter: extract them from documents, draft and check them. Connect the Mary MCP server to Maito once, and everyone on your team can use Mary from Slack, by email, or from Claude, ChatGPT, Cursor, Codex, Grok or Muse. Nobody else has to sign in.

-   Connects in one click
-   Sign in with Mary
-   One connection for the whole team
-   Server by [Mary](https://marytechnology.com/)

Updated October 21, 2026

## What you can ask with Mary

Requests to Maito

![Dana](https://maito.app/marketing-avatars/dana.webp)

Dana in Slack

Build a timeline of key events from the Acme dispute documents.

![Sam](https://maito.app/marketing-avatars/sam.webp)

Sam by email

Which facts in our draft statement aren't backed by a source document?

Maito uses Mary to do the work and replies where you asked.

## How to connect Mary

Open Connections in your workspace and choose Connect next to Mary. You sign in to Mary in a new tab, and that's the whole setup. Name the account and choose Workspace under who can use it. That's the only time anyone signs in: your whole team, shared chats and Loops can use Mary from then on. Or skip ahead and ask for the work: Maito sends you a link if Mary isn't connected yet.

## Questions

### What is the Mary MCP server URL?

Mary publishes it at https://mcp.us.marytechnology.com/mcp, and it signs in with OAuth, so there's no key to copy.

### Can I use the Mary MCP server from Slack?

Yes. Connect it to Maito once, then mention Maito in any Slack channel or send it a direct message. The same connection works by email and from Claude, ChatGPT, Cursor, Codex, Grok or Muse.

### Does everyone on my team have to connect Mary?

No. One person connects it once and chooses Workspace. Then everyone in the workspace, shared chats and Loops can use Mary, without signing in themselves. Choose Only me instead to keep it to your own chats.

### Do I have to connect Mary before I ask?

No. If a request needs Mary and it isn't connected yet, your agent sends you a link. Connect it, and the work picks up where it stopped.

### Can I limit what Maito does in Mary?

Yes. After you connect, turn off any Mary tools you don't want Maito to use, such as the ones that change data. Tools Mary adds later stay off until you turn them on.

## Also in Legal

-   [Datasite Datasite runs data rooms for M&A deals: documents, folders and who has access.](https://maito.app/integrations/datasite)
-   [CourtListener CourtListener is a free legal research database of millions of court opinions and records.](https://maito.app/integrations/courtlistener)
-   [iManage Work iManage Work is a document and email management system for law firms and legal teams.](https://maito.app/integrations/imanage-work)
-   [Legal Data Hunter Legal Data Hunter searches more than 23 million legal documents across 160+ jurisdictions.](https://maito.app/integrations/legal-data-hunter)
-   [Vanta Vanta tracks security compliance: controls, tests, policies and audits.](https://maito.app/integrations/vanta)
-   [PandaDoc PandaDoc is where you create, send, sign and track documents like proposals and contracts.](https://maito.app/integrations/pandadoc)

[See all integrations](https://maito.app/integrations)

## Put your AI employee to work.

Set it up in minutes. Connect Mary, then hand Maito the first job.

[Put Maito to work](https://maito.app/login?returnTo=%2Fintegrations%2Fmary)[Book a demo](https://cal.com/ddubovetzky/chat-with-the-founder)