Corner

Connect Corner to ChatGPT

Add Corner once, then plan your running in the chat. ChatGPT saves the workouts you agree on, and Corner puts them in the Workout app on your Apple Watch. Claude works too, with the same address.

Corner’s connector URL
https://corner-wine.vercel.app/mcp

You’ll sign in to Corner the way you do in the Corner app on your iPhone: Sign in with Apple, or a 6-digit code to the same email. That account is what puts your runs on Apple Watch.

ChatGPT

Set up on chatgpt.com

  1. On chatgpt.com, open Settings → Apps → Advanced settings and turn on Developer mode.
  2. Go to chatgpt.com/plugins, choose +, then Add custom MCP server.
  3. Name it Corner, paste the URL above and choose OAuth for authentication. Confirm, then create it.
  4. ChatGPT opens Corner’s sign-in. Sign in as you do in the app and choose Allow.
  5. In a chat, type @Corner or pick it from the + menu.

Once Corner is listed in ChatGPT’s directory, you’ll find it by searching for Corner instead. ChatGPT asks you to confirm before it saves to Corner; that’s the only approval, there’s nothing to accept again in the app.

Using Claude instead

Set up on claude.ai or Claude for desktop

  1. On claude.ai or the Claude desktop app, open Customize → Connectors (on some accounts it’s Settings → Connectors).
  2. Choose Add custom connector. Name it Corner and paste the URL above. If Claude asks how to register, pick Register automatically.
  3. Select Add, then Connect. Sign in as you do in the app and choose Allow.
  4. In a chat, turn Corner on from the + menu under Connectors. It then works in the Claude iPhone app too.

Connectors are added on the web or desktop, not in the phone app. Claude’s free plan includes one custom connector. Claude asks before Corner changes your plan; you can choose to always allow its read-only tools.

Things to say

Talk to it as you would a coach. Tap one to copy it.

What ChatGPT can do with Corner

Know where you are
Your goal, race and routine from your Corner profile, the coming two weeks, your recent runs and what's actually on your watch.
Plan a week at a time
Each run with its warm-up, reps, recoveries and pace or heart-rate targets, saved in one go once you've said yes.
Change it as you go
Move, rewrite or cancel runs. Each change has a version, so it never overwrites a newer one.
Review your runs
Distance, time, pace, heart rate, splits, each rep against its target, and how you said it felt.

It never sees your GPS routes, which stay on your iPhone. Every change it makes appears in your plan’s history with its name on it. Read the privacy policy.

If something’s not working

No code arrived
Check your spam folder. Codes last an hour, and you can ask for a new one every minute.
The assistant doesn’t use Corner
Make sure Corner is switched on for the chat, then mention it by name: “Check Corner…”.
A change isn’t on my watch
Open Corner on your iPhone: it puts the coming week in the Workout app whenever it can, and says if a run didn’t make it. ChatGPT can check too: ask “is this week on my watch?”.
Disconnecting
In Corner, Settings, Disconnect under the assistant: the assistant can’t read or change anything from its next request. Or remove Corner from your assistant’s connector settings.

Still stuck? Get help.