Is there a Polar connector for Grok?

Not from Polar. Memory.fit is a hosted MCP server: connect Polar in the Memory.fit app, add one Memory.fit address to Grok, and Grok reads it.

Memory.fit is $9 a month or $69 a year, with 7 days free, for every device and every AI you connect. Grok's own plan, if it has one, is separate.

Does it work outside the US?

Memory.fit works in every country, and Grok's requirements name no region.

Is my Polar data safe?

Grok gets only the permissions you allow, every change shows in the Memory.fit app with who made it, and you can disconnect Grok or Polar at any time.

Can I set it up on my phone?

Yes. In the Grok app, open Settings › Connectors, scroll to Custom Connectors, tap Custom Connector, then Connect. Name it Memory.fit, paste the address and tap Add Connector, then sign in with your Memory.fit account.

Connect Polar to Grok

Yes. Connect Polar in the Memory.fit app, add one Memory.fit address to Grok, and Grok reads your training sessions, sleep, HRV and Nightly Recharge.

Grok can also write your plans back to Memory.fit, where you see them in the app.

What Grok needs: sign in, about a minute.

Connect Polar to Grok: the title card of the how-to video

1:19 · On YouTube soon

The whole setup in 1:19. The chats in it are examples: Grok's answers depend on your data.

0:00Connect Polar in Memory.fit
0:21Add Memory.fit to Grok
0:51Ask Grok and plan around your recovery

The address to add to Grok

https://api.memory.fit/mcp?src=mcp-polar-grok

MCP address: https://api.memory.fit/mcp

Get it onGoogle Play

Set it up

What it reads

What Grok reads from Polar

Directly from Polar: you sign in with Polar in the Memory.fit app.

Polar shares the last 30 days of history.

Training sessions
Sleep
HRV and Nightly Recharge
Daily activity

The tools that read it:get_workoutsget_sleepget_daily_metricsget_training_loadget_session_complianceget_source_data

What it can do

What Grok can do with it

Plans written back: Yes. Grok reads your training, sleep and fuel, and can plan around them.
Meal photos: In part. Grok sees your meal photo and logs the meal, but can't hand the photo itself to Memory.fit unless it can run code with internet access.
Where it runs: grok.com and the Grok apps.
Good to know: This page is for Grok, the assistant on grok.com and in the Grok apps, not Grok Bot. You add Memory.fit once in the Grok phone app, under Settings › Connectors › Custom Connector, and Grok reads your Polar training and Nightly Recharge in any chat after that, with no connector to pick.

Setup

Set up Polar in Grok

1. Polar in the Memory.fit app

01In the Memory.fit app, open Settings → Health data.
02Tap Connect next to Polar.
03Sign in with your Polar account and accept the data sharing consents.
04Your last 30 days come in first; new sessions arrive as Polar syncs.

2. Memory.fit in Grok

GrokSign in · about a minute

01Copy the address
02In Grok: Settings › Connectors › Custom Connector › Connect
03Name it Memory.fit, paste it, tap Add Connector, then sign in to Memory.fit

The address: https://api.memory.fit/mcp?src=mcp-polar-grok

Every step for Grok

Other routes

Polar in Grok without Memory.fit

Polar has no official route to Grok.

Try it

Ask Grok about your Polar data

“Read my Nightly Recharge for the last two weeks and tell me which nights I recovered worst.”

GrokExample

Wednesday and Saturday were your worst, both rated poor, with ANS charges of −5.4 and −6.3. Both followed evening sessions and less than 6 h 30 of sleep.

From the video. Answers depend on your data.

Uses:get_daily_metricsget_sleep

“Compare my training load this month with last month.”

Uses:get_training_load

“How did my sleep change on the nights after my hard sessions?”

Uses:get_sleepget_workouts

“Move tomorrow's threshold run if my Nightly Recharge is poor, and tell me why.”

GrokExample

Done. Last night's Nightly Recharge was poor, with an ANS charge of −5.8, so Thursday's threshold run moved to Saturday. Thursday is an easy 40 min run now.

From the video. Answers depend on your data.

Uses:get_daily_metricsmove_sessionplan_session

Limits

Limits, said plainly

Polar shares the last 30 days of history, so older sessions don't come in.
Accept Polar's data sharing consents when you connect, or Polar shares nothing.
Memory.fit reads Polar and sends nothing to it.
Polar shares the last 30 days of history.
Your AI's own subscription is separate from Memory.fit's.

Questions

Polar in Grok, in short.

Not from Polar. Memory.fit is a hosted MCP server: connect Polar in the Memory.fit app, add one Memory.fit address to Grok, and Grok reads it.
Memory.fit is $9 a month or $69 a year, with 7 days free, for every device and every AI you connect. Grok's own plan, if it has one, is separate.
Memory.fit works in every country, and Grok's requirements name no region.
Grok gets only the permissions you allow, every change shows in the Memory.fit app with who made it, and you can disconnect Grok or Polar at any time.
Yes. In the Grok app, open Settings › Connectors, scroll to Custom Connectors, tap Custom Connector, then Connect. Name it Memory.fit, paste the address and tap Add Connector, then sign in with your Memory.fit account.

Your next chapter starts with everything you've learned.

On Android now. iPhone is coming: join the waitlist and we'll email you the day Memory.fit is on the App Store.

No spam. One email when it's ready.