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MCP

Missive uses MCP in two directions: the assistant reaching out to third-party apps, and AI apps like Claude and ChatGPT reaching into your Missive data.

Model Context Protocol (MCP) is an open standard that lets AI models connect to external tools and data. Missive supports it in both directions, and the two are easy to mix up.

What it does
Direction

MCP integrations

Give Missive's AI assistant access to Notion, Linear, Attio, Stripe, and other tools while you work inside Missive.

Missive reaches out to another app

MCP server

Work with your Missive conversations, contacts, and calendar from Claude, ChatGPT, or another AI app.

Another app reaches into Missive

Use MCP integrations when you want more context inside Missive. Use the MCP server when you want your Missive data available in a chat somewhere else.

You can use both at once. They are configured in different places and have nothing to do with each other.

Which one do I want?

"I want the Missive assistant to look up a customer in our CRM before drafting a reply." That's an MCP integration. Set it up in Settings > Integrations.

"I want to ask Claude what's in my Missive inbox this morning." That's the MCP server. Set it up in Claude, then approve the request in Missive.

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