MCP server · API · app

Agent-First Calorie Logging

Log meals from Claude, ChatGPT, or any MCP client — or from the app. One verified food catalog, one diary, your data.
Free to start. Sign in with Google, nothing else to set up.
Features

Simple to log. Hard to get wrong.

Search, pick a serving, log.

Typo-tolerant search over a verified catalog. Servings in grams, cups, or the real menu item.

Provenance on every food

Official, reviewed, or estimated — always labeled. Restaurant data is imported from approved sources and re-checked.

Recipes with real math

Per-serving nutrition from snapshotted ingredients. Publish, copy, and star what works.

Never lose a log

Offline drafts retry on their own. Every write is idempotent, so a flaky connection can never double-log.

Private by default

Your diary is yours. Export everything as JSON or delete your account in two taps.

iPhone, iPad, web

One app, native on iOS, the same diary everywhere.
For agents

Built for agents first.

The same services behind the app are exposed as a remote MCP server. Your assistant signs in with OAuth 2.1 + PKCE, you approve the scopes once, and it logs what you ate for you.
Streamable HTTP, stateless, no API keys to paste
Scopes: diary:read, diary:write, library:write, goals:write
Revoke any connected app from Settings
Same rate limits and audit trail as the app
search_foods
log_meal
get_diary
get_summary
save_recipe
set_goals
log_weight
Step-by-step setup for ChatGPT and Claude ›
Add to any MCP client
{ "mcpServers": { "calorie-cub": { "url": "https://mcp.caloriecub.com/mcp" } } }
Claude Code
claude mcp add --transport http calorie-cub https://mcp.caloriecub.com/mcp
REST lives under /api with the same session; OpenAPI docs are on the way.
Pricing

Tracking is free. Pro logs by chat.

Free

$0
All your tracking, free
Unlimited logging
Food catalog and restaurant menus
Recipes and favorites
Read-only MCP and API access
Export and delete anytime

Pro

Free trial
$39.99
About $3.33 a month, billed yearly after a 3-day free trial
Everything in Free
Log meals, foods, and goals by chat
Unlimited connected apps
Full MCP and API access
Cancel anytime. Apple or Stripe handles payment, so we never see your card.
FAQ

Questions, answered.

Is Calorie Cub really free?

Yes. Logging, the food catalog, restaurant menus, recipes, and export are free with no time limit. Pro only adds logging by chat from AI assistants.

How does the Pro trial work?

The yearly plan starts with 3 free days. Cancel before the trial ends and you pay nothing. If you cancel later, Pro stays on until the end of the period you paid for.

How do I cancel?

On iPhone, in your App Store subscriptions. On the web, from Manage subscription in Settings. Apple or Stripe handles payment; we never see your card number.

Where does the nutrition data come from?

The USDA, restaurants’ own published nutrition guides, and foods people add. Every food is labeled official, reviewed, or estimated, so you know what you are logging.

Do you sell my data?

No. We don’t sell data, show ads, or use your diary for advertising. Export everything as JSON or delete your account anytime in Settings.

Which assistants can log for me?

Any app that supports remote MCP servers, including Claude and ChatGPT. You approve each app once, and you can disconnect it from Settings at any time.

Start logging in a minute.

Free to start, no card needed. Sign in with Google, then log from the app or your favorite assistant.