
Cronometer MCP
Your Cronometer meals in ChatGPT and Claude, through Apple Health or Health Connect.
Cronometer has no official MCP server.
Memory.fit is a hosted MCP server for athletes. It has no direct Cronometer connection: link Cronometer to Apple Health or Health Connect, connect Apple Health or Health Connect in the Memory.fit app, add one address to your AI, and it reads each food, fiber, sugar, sodium and caffeine, when shared, grouped into meals on the day in Memory.fit.
You need the Memory.fit app on Android (the iPhone app is coming), and an AI that can add a custom connector.
The address to add to your AI
https://api.memory.fit/mcp?src=mcp-cronometerMCP address: https://api.memory.fit/mcp
Cronometer and your AI, in short
- Official Cronometer MCP
- None
- Memory.fit
- Hosted MCP server, nothing to install
- Your AI reads
- Each food: name, calories, protein, carbs and fat, Fiber, sugar, sodium and caffeine, when shared, Grouped into meals on the day in Memory.fit
- Workouts to Cronometer
- No
- Works in
- ChatGPT, Claude, Grok Bot, Gemini and any MCP app
- Price
- $9 a month or $69 a year, with 7 days free
Checked November 10, 2026.
What your AI reads
What your AI can read from Cronometer
Once Cronometer is connected in the Memory.fit app, every AI you add reads the same history, under its own permissions.
- Each food: name, calories, protein, carbs and fat
- Fiber, sugar, sodium and caffeine, when shared
- Grouped into meals on the day in Memory.fit
The tools that read it:get_ledgerget_dayget_trendsget_fluid
Setup
Set up Cronometer in your AI
1. In the Memory.fit app
- 01In Cronometer, turn on its Apple Health (iPhone) or Health Connect (Android) sync and allow nutrition.
- 02In the Memory.fit app, open Settings → Health data and connect Apple Health or Health Connect.
- 03Allow Memory.fit to read nutrition.
- 04Meals you log in Cronometer appear on that day in Memory.fit, labeled Cronometer, and count once in the day.
2. In your AI
Pick your AI. Each one connects to your Memory.fit account, with a sign in or a key.
ChatGPTOn a computer · about two minutes
- 01On chatgpt.com, open Plugins and tap +, then Add custom MCP server
- 02Name it Memory.fit and paste the address
- 03Choose OAuth, confirm the warning, then Create as a plugin and sign in
- 04In a new chat, type @ and pick Memory.fit
The address: https://api.memory.fit/mcp?src=mcp-cronometer
Coming soon: one tap from ChatGPT's plugin directory.
ClaudeAny plan · about a minute
- 01Install in Claude
- 02Tap Add, then sign in to Memory.fit
- 03In a chat, turn on Memory.fit under + › Connectors
Claude adds new connectors on the web or desktop. On a phone, use a computer once, and after that it works in the Claude app too.
Grok BotComes with X Premium, Super or Ultra, or a legacy Cursor plan
- 01In the Memory.fit app, open Settings → AI agents → Grok Bot and copy your Memory.fit link.
- 02Open Grok Bot on your computer or phone and message any of your Bots.
- 03Send “Add a custom MCP server called Memory.fit at” and paste your Memory.fit link.
- 04Check the name and link it shows you, then approve it.
- 05Tap Authorize and sign in with your Memory.fit account. Memory.fit works from your next message.
The address: https://api.memory.fit/mcp?src=mcp-cronometer
MuseUS only · 18+
- 01In the Memory.fit app, open Settings → AI agents → Muse and create your key.
- 02In a Muse chat, say: “Add a custom connector called Memory.fit. Its address is the link I’ll paste, and it needs a key.”
- 03Paste your Memory.fit address when Muse asks.
- 04Paste your key into Muse’s secure credentials prompt, never into the chat.
The address: https://api.memory.fit/mcp?src=mcp-cronometer
Muse connects with a key from the Memory.fit app. Paste it into Muse's settings, never into a chat.
DotsChatGPT Pro, Business Premium or Enterprise
- 01In the Memory.fit app, open Settings → AI agents → Dots and copy your Memory.fit link.
- 02On chatgpt.com in your browser, open Plugins and tap +.
- 03Choose Add custom server, name it Memory.fit and paste your Memory.fit link.
- 04Pick sign-in, then sign in with your Memory.fit account and choose what it may do.
- 05In your dot's app settings, allow Memory.fit. Then message your dot.
The address: https://api.memory.fit/mcp?src=mcp-cronometer
GeminiPersonal Google account · 18+
- 01On gemini.google.com: Customize › Connectors
- 02Tap + Custom
- 03Paste the address, tap Next, then Connect, and sign in to Memory.fit
- 04In a chat, type @ and pick it under Connectors
The address: https://api.memory.fit/mcp?src=mcp-cronometer
No + Custom button? Work accounts don't have it: use a personal Google account. Gemini asks you to allow each change it makes.
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-cronometer
Perplexity ComputerPro · about two minutes
- 01Copy the address
- 02On perplexity.ai: Settings › Connectors › + Custom connector › Remote
- 03Name it Memory.fit, paste the address and choose API key
- 04Paste your key from the Memory.fit app, then save
The address: https://api.memory.fit/mcp?src=mcp-cronometer
Perplexity Computer connects with a key from the Memory.fit app. Paste it into Perplexity Computer's settings, never into a chat.
Cursor
- 01In the Memory.fit app, open Settings → AI agents → Cursor and create your key.
- 02Add the block to ~/.cursor/mcp.json (or .cursor/mcp.json in a project).
- 03Check Cursor Settings → Tools & MCP shows Memory.fit as connected.
{
"mcpServers": {
"memory-fit": {
"url": "https://api.memory.fit/mcp?src=mcp-cronometer",
"headers": { "Authorization": "Bearer mem_pat_your_key" }
}
}
}Cursor connects with a key from the Memory.fit app. Paste it into Cursor's settings, never into a chat.
Claude CodeOn a computer · Claude Code · about a minute
- 01In your terminal, run the command
- 02Start Claude Code and run /mcp
- 03Pick memory-fit and sign in to Memory.fit
claude mcp add --transport http memory-fit "https://api.memory.fit/mcp?src=mcp-cronometer"CodexOn a computer · Codex CLI · about a minute
- 01In your terminal, run the command
- 02Then run: codex mcp login memory-fit
- 03Sign in to Memory.fit in the browser that opens
codex mcp add memory-fit --url "https://api.memory.fit/mcp?src=mcp-cronometer"Try it
Try these prompts
“Show my average calories, protein and carbs for the last four weeks from what I logged in Cronometer.”
Uses:get_ledgerget_trends
“Did I eat enough on the days before my hardest sessions this week?”
Uses:get_ledgerget_session_fueling
“How does my fluid intake compare on long training days and rest days?”
Uses:get_fluidget_day
“Set daily targets for next week that match my training plan.”
Uses:get_trendsset_day_targets
Your options
Every way to get Cronometer into an AI
Cronometer runs no MCP server. Community servers run on your own computer, hosted services run it for you, and so does Memory.fit.
| Option | Where it runs | What you need |
|---|---|---|
| Community serverrwestergren/cronometer-api-mcpOn your own computer | On your own computer | Your Cronometer email and password, run on your own computer. It uses the mobile app's undocumented interface. |
| Community servercphoskins/cronometer-mcpOn your own computer | On your own computer | Your Cronometer email and password, and a Gold account, run on your own computer. |
| Hosted MCP serverMemory.fit MCPHosted, in ChatGPT, Claude, Grok Bot, Gemini and any MCP app | Hosted, in ChatGPT, Claude, Grok Bot, Gemini and any MCP app | The Memory.fit app with Apple Health (iPhone) or Health Connect (Android) connected, and Cronometer sharing its nutrition there. $9 a month or $69 a year, with 7 days free. |
When another option is better
- You want your AI to add or edit meals inside Cronometer itself: a community server can, using your Cronometer login. Memory.fit reads your meals and changes nothing in Cronometer.
Limits, said plainly
- Cronometer has no public API. What your AI sees is what Cronometer shares with Apple Health or Health Connect.
- Cronometer's help pages describe the Apple Health connection in detail; check Cronometer's Connect Apps and Devices screen for what your phone offers.
- Memory.fit shows what Cronometer shares and changes nothing in Cronometer. Edit a meal in Cronometer.
Sources, checked November 10, 2026
- github.com/rwestergren/cronometer-api-mcp: Unofficial; reverse-engineered mobile REST API; CRONOMETER_USERNAME and CRONOMETER_PASSWORD (optional 2FA secret); read and write diary; hosted version listed as 'coming soon'; 71 stars, pushed 2026-11-08
- github.com/cphoskins/cronometer-mcp: Unofficial; Cronometer web backend; requires a Cronometer Gold account (or a paid tier with web login); username and password in environment variables; 28 stars
- cronometer.com/blog/apple-health: Cronometer: with Apple Health connected it exports 13 nutrients plus health measurements to Apple Health, and imports activity, exercise, sleep, weight and more
- support.cronometer.com/hc/en-us/articles/360020734212-Apple-Health-Apple-Watch: Cronometer: connect under More, Connect Apps and Devices, Apple Health; you choose what it can read and write; a manual backfill syncs missing Apple Health data
Questions
Cronometer MCP, in short.
No. Cronometer does not run an MCP server. Community servers exist, and you run them yourself.
Yes, through Apple Health or Health Connect. Link Cronometer to Apple Health or Health Connect, connect Apple Health or Health Connect in the Memory.fit app, add Memory.fit to ChatGPT as a connector, and ChatGPT reads each finished session. Claude and every MCP app work the same way.
No. Memory.fit is hosted: you add one address to your AI and sign in with your Memory.fit account. Nothing to install, no password of another service to paste.
Each AI gets only the permissions you allow, every change shows in the app with who made it, and you can disconnect an AI or a source at any time.
Not for Memory.fit: it reads what Cronometer shares with Apple Health or Health Connect, with no Cronometer login. One community server asks for Gold.
Related
More MCP pages
- What Memory.fit reads from Cronometer
- Memory.fit and AthleteData, side by side
- Every device's MCP page
Cronometer is a trademark of Cronometer Software Inc. Memory.fit is not made by or affiliated with Cronometer Software Inc.
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.