ChatGPT
Open Plugins, choose + then Add custom MCP server, paste the HTTPS address, select OAuth, review the tools it offers, and create it as a plugin. Then enable it in a conversation.
✦Connection guide
Introduce Fitly to your assistant.
Fitly is a connector: your assistant talks to it on your behalf. You add it once, sign in with your Fitly account when asked, and approve the access.
Before you start
- Create a Fitly account (or sign in) and set your timezone and targets under Targets & preferences, so the first day lands on the right date.
- Copy the connector address:
https://api.getfitly.app/mcp
Adding Fitly as a custom connector
Each assistant has its own place to add a custom connector (also called a custom MCP server). Whether that option appears depends on the assistant, your plan and any workspace or organisation settings; Fitly cannot turn it on for you. The vendor pages below are the authoritative instructions and change more often than this guide.
Claude
Open settings, find Connectors, choose to add a custom connector and paste the address. Claude will ask you to connect your Fitly account the first time you use it.
Grok
On grok.com open Connectors, choose New Connector, then Custom, and paste the address. This is separate from the Grok Bot marketplace, where Fitly is not listed.
Fitly is not yet published in any assistant’s directory. When a listing is approved it will be announced here, with the official link. Until then, a custom connector is the only supported route.
Signing in from the assistant
The first time the assistant uses Fitly, it opens a Fitly sign-in page. Enter your email and password and choose what the assistant may do: read your data, or read and change it. Each assistant gets its own grant, which you can revoke from Connected assistants.
The sign-in page is served by Fitly’s own service, so your password goes only to Fitly. It only opens from an assistant’s connection request; there is no standalone link to it.
The first things to say
- “Read my Fitly settings and tell me today’s date in my timezone.”
- “Log two eggs, sourdough toast and an oat milk latte for breakfast.”
- “Save this recipe to Fitly: [paste a recipe]. It makes six servings.”
- “Put oatmeal on weekday mornings at 7:30.”
- “Plan salmon bowls for Monday and Wednesday dinner, then make next week’s grocery list.”
Fitly’s instructions ask your assistant to check with you when a food or portion is unclear, to mark estimates as estimates, and to report what it saved. Assistants differ, so glance at what came back. If something looks wrong, say so; corrections to a single entry never rewrite your history unless you ask.
If something doesn’t work
- “Connection request expired”: start the connection again from the assistant; the sign-in page is only valid for a few minutes.
- Changed your password? Every connection was signed out for safety. Connect again from the assistant.
- The assistant says it can only read: it was connected read-only. Disconnect it on your account page and connect again, choosing read and change.
- Dates land on the wrong day: check your timezone under Targets & preferences.