Notion and Marrow
Cloud MCP
Notion Agent can read Marrow through a custom MCP connection, for workspaces on Business or Enterprise.
Open in Marrow works on an iPhone with Marrow 1.6 or later.
Cloud MCP (Notion Agent) Pro
A private copy of your data on Marrow's server. Your AI reads it any time, phone asleep, and every sign-in is approved on your phone. You need: Notion Business or Enterprise, as an admin.
- In Marrow, open Connects, then AI, and tap Notion. Pick Cloud MCP.
- Turn Cloud MCP on (Marrow Pro) and add Notion to Your AIs. Marrow shows your link.
- In Notion, open Settings, Connections, then Discover.
- Choose Add Custom MCP and paste your link.
https://connect.marrowhealthapp.com/t/<your-id>/mcp - Type the code the page shows into Marrow and approve.
- Ask: How am I doing today?
Placeholder shown: Marrow fills in your own link.
What it can do
- Read. A daily brief scored against your own normal, your baselines, what changed this week, any metric day by day, workouts, lifts set by set, sleep stages and your food diary.
- Log. Your AI logs meals, water, weight, workouts, sleep, symptoms and mood when you ask, after you turn on Allow AI write for that way in Marrow. Every entry can be undone.
Try asking
- How am I doing today?
- What changed in my sleep this week compared with my normal?
- Which of my lifts went up this month?
- Log a turkey sandwich and an apple for lunch.
If it does not work
In Notion
- No Add Custom MCP button. It needs a Business or Enterprise plan, and only admins see it. A workspace admin turns on Enable custom MCP servers in Settings, Connections, Manage.
- Nothing to add on the phone. MCP servers are added in Notion on the web or the desktop app.
- Notion Agent does not use Marrow. Mention the connection by name in your request.
- Answers get slow. With around 10 or more MCP servers connected, responses can slow down. Remove the ones you do not use.
Cloud MCP checks
- The sign-in waits in Marrow. The sign-in page shows a 6-character code. Open Marrow, go to Export, type the code and tap Approve. A request expires after ten minutes and three wrong codes deny it. If that happens, start again from your AI.
- The page says the link did not match a Marrow. In Marrow, open your AI under Connections, tap Copy your link and paste the whole link.
- It worked, then stopped. When Cloud MCP is off, or Marrow Pro has ended, the copy is paused. Switching Cloud MCP off also signs every AI out. Turn it back on, switch this connection on in Your AIs and sign in again from your AI.
- Approve stops at the limit. Each AI is one connection. Free keeps 3 connections on at a time. Marrow Pro keeps up to 20: AIs, servers and automations together. Sources never count. Turn one off in Your AIs or Your Exports, then approve again.
- It reads but cannot log. Turn on Allow AI write for Cloud MCP in Marrow. An entry reaches the phone within seconds when notifications are allowed for Marrow, or the next time you open the app.
More fixes in the guides: Cloud MCP.
