Connecting ReminderIt on ChatGPT desktop vs web

People often ask whether they need to connect ReminderIt separately on the ChatGPT desktop app and on the web, and whether reminders made in one place show up in the other. The short answer: set it up once, use it anywhere.

Here is why that works, and what to check if a device seems out of step.

The connector lives with your account, not your device

When you add https://mcp.reminderit.com as a custom connector in ChatGPT's connector settings and sign in through OAuth, that connection is stored against your ChatGPT account. The desktop app and the website are two front doors to the same account.

So once the connector is authorised, ChatGPT can reach your ReminderIt account whether you opened it in a browser tab or in the installed app. You are not configuring a device; you are linking two accounts.

One ReminderIt account, one set of reminders

The reminders themselves live in your ReminderIt account, not inside ChatGPT. That means a call you scheduled from the desktop app is the very same reminder you will see if you ask about it later on the web.

Ask "what reminders do I have?" from either place and ChatGPT calls list_reminders against the one account, returning the same list. There is no syncing to wait for and no risk of two separate copies drifting apart.

Setting it up (generic, because menus move)

The exact wording of ChatGPT's menus changes over time, so treat this as a shape rather than a fixed click-path. Look for connector, integration or app settings, choose to add a custom connector, and paste https://mcp.reminderit.com.

Approve the OAuth screen when it appears. If you have already done this once, a new device you sign in on inherits the connection; you should not have to paste the URL again.

If one surface seems not to see ReminderIt

Occasionally a device shows no ReminderIt tools. First confirm you are signed in to the same ChatGPT account on both. A different work or personal login is the most common cause of a missing connector.

If the account matches but tools still do not appear, re-authorise the connector at https://mcp.reminderit.com from that surface. You can confirm the link is live by asking ChatGPT to run whoami, which reports which ReminderIt account it is acting on.

One place to manage access

Because it is all one account, control lives in one place too. Every connected client holds a per-client key you can revoke at reminderit.com/api-keys, so if you ever retire a machine you can cut its access without touching the others.

That single point of control is the practical upside of an account-tied connector: set up anywhere, manage everywhere.