Le Chat and Marrow
Cloud MCP
Mistral's assistant takes Marrow as a custom MCP connector, on the free plan too.
Open in Marrow works on an iPhone with Marrow 1.6 or later.
Cloud MCP 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: Free plan works.
- In Marrow, open Connects, then AI, and tap Le Chat. Pick Cloud MCP.
- Turn Cloud MCP on (Marrow Pro) and add Le Chat to Your AIs. Marrow shows your link.
- In Le Chat, open Connectors, then Add Connector.
- Choose Custom MCP Connector and paste your link.
https://connect.marrowhealthapp.com/t/<your-id>/mcp - Click Connect.
- 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 Le Chat
- MCP connection requires additional information or is invalid. Mistral could not use the address. Paste the whole Cloud MCP link. The server must use HTTPS with a valid certificate, so a Local MCP address never works here.
- No Add Connector button. Adding a connector needs an administrator. On Free, Pro and Student plans the account owner is the administrator. In a team, ask your admin.
- The connector name is refused. Use a name with no spaces or special characters, such as marrow.
- Le Chat does not use Marrow. Click + or type / in the chat, choose Tools and turn the connector on for that task.
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.
