Kracey MCPFree

Your intervals.icu training, in Claude

Connect Kracey to Claude and ask about your own training: what you did this week, where your last HYROX lost time, what pace a goal needs.

  • Free
  • Read-only
  • No AI model in the connector
  • Disconnect anytime

Start here

Add Kracey to Claude

You need a Kracey account. Signing in is part of connecting, and you choose what Claude may read.

To read your training, connect intervals.icu under Settings. The calculators and the race finder work without it.

The address

https://mcp.kracey.com/mcp

Claude on the web or desktop

  1. 1In Claude, open Customize, then Connectors.
  2. 2Choose Add custom connector and paste the address.
  3. 3Choose Add, then Connect.
  4. 4Sign in to Kracey and choose Allow.

Claude Code

claude mcp add --transport http kracey https://mcp.kracey.com/mcp

Then run /mcp, pick kracey and sign in.

What your assistant can read

This list is the server's own. Nothing else is reachable.

Your training

Needs intervals.icu connected to your Kracey account.

  • What is connected, and what you shared.
  • Your sessions from the last 90 days.
  • One session in full, lap by lap.
  • Weekly volume, the split by sport, and trends.
  • Your best running time at each distance.
  • Predicted 5K, 10K, half marathon and HYROX times.

Your HYROX races

The results saved on your account.

  • Your saved HYROX races, split by split.
  • One race against another, station by station.

Calculators and races

Work for any Kracey account, with nothing connected.

  • A HYROX finish time from a running result.
  • A goal time worked back into lap by lap pacing.
  • Other race distances from one result.
  • Upcoming HYROX and hybrid races, with conditions.

Heart and recovery

Only if you tick Heart and recovery data. Heart rate in your sessions comes with it too.

  • Fitness, fatigue, form and VO2max.
  • Your heart rate zones, worked out several ways.
  • Sleep, HRV and resting heart rate against your usual.

With the Kracey coach

For athletes who have a coach plan.

  • The shape of your next two coached weeks.

Not included: building a plan, changing it and race week preparation answer that they need the coach.

Things to ask

Copy one, or write your own. More in the prompt library.

My week in numbers

A table of the week and the change against the week before.

Using Kracey, list my training sessions from the last 7 days in a table: date, sport, duration, distance and pace. Then give the totals, and how they compare with my recent weekly average.

Where my last HYROX changed

Station by station, what got faster and what got slower.

Using Kracey, compare my most recent HYROX race with the one before it. Show the change in running and at every station in seconds, sorted from the most time gained to the most time lost.

Pacing for a goal time

A goal time worked backwards into a lap by lap plan.

Using Kracey, work out the pacing for a 1:15:00 HYROX in Men Open: the run pace per kilometre, the time for each station, and the clock after every lap. Also give the 10K time that run pace corresponds to.

All prompts

Why is it free?

The tools are plain code

Every answer is a lookup or a calculation on your own data. The connector runs no AI model, so answering costs us close to nothing.

It is the front door to the coach

Kracey's paid product is a coach that plans your training and adapts it every day. The connector shows you what Kracey reads and computes before you decide whether you want that.

Your data is not the product

We never sell it and never use it to train AI models. It is in our terms, and on the security page.

What it cannot do

Change anything. Every tool is read-only.

Read your coach chat. Not your conversations, and not what the coach remembers about you.

Read your heart rate or recovery unasked. Heart rate, zones, VO2max, load, sleep, HRV and resting heart rate are a separate tick, off by default.

See anyone else. A connection reads the account that signed in, and only that.

Your data

What your assistant reads leaves Kracey. From there that assistant handles it under its own terms.

You can disconnect anytime. Under Settings. It stops working at once.

A copy is kept for 15 minutes. So several questions in a row do not each fetch your training again.

Deleting your account removes all of it. The full table is in the privacy policy.

Good to know

How far back

Sessions from the last 90 days, best running efforts from the last year.

Strava

Sessions synced through Strava are left out. Sync your watch to intervals.icu directly and they are included.

Garmin

Sessions from a Garmin device are marked, so your assistant can credit Garmin.

The HYROX numbers

Station times are medians from 810,679 finishes across 125 HYROX races.

Every tool, the scopes, the limits and troubleshooting are in the connector docs. Something not working? See support, or write to hello@kracey.com.