# Crumb

> Crumb is a food diary that your AI assistant keeps for you. You snap a photo of your plate or describe what you ate, and ChatGPT (or Claude, or any MCP-compatible assistant) estimates the dish, portions, calories, protein, carbs and fat and saves it to Crumb. Crumb stores your meals, meal plans, shopping lists and taste profile and shows them in a calm iPhone app and a web diary. Crumb has no AI of its own and makes no model calls: the thinking happens in your assistant, Crumb remembers.

Crumb is for people who want a food diary without typing: they talk to their AI assistant and snap photos; Crumb keeps the structured record. Free during the private beta.

Key facts:
- Category: Food diary, calorie and macro tracker, meal planner
- Works with: ChatGPT, Claude and any MCP client with OAuth (remote MCP server, Streamable HTTP)
- MCP server URL: https://crumbdiary.com/mcp
- Surfaces: ChatGPT/Claude connector with an in-chat diary widget, native iPhone app (private TestFlight beta), web diary
- Crumb makes no model calls of its own; the user's assistant does all estimation and planning
- Privacy: no ads, no data sales, no model training; meal photos are deleted after logging

## Docs

- [Full description for AI systems](https://crumbdiary.com/llms-full.txt): what Crumb does, setup, every MCP tool and prompt, how assistants should behave, privacy and FAQ
- [Landing page](https://crumbdiary.com/): the human-readable overview
- [Privacy](https://crumbdiary.com/privacy): what is stored, who sees it, how to delete it

## App

- [Web diary](https://crumbdiary.com/diary): sign-in required
- [Account and connected assistants](https://crumbdiary.com/account): sign-in required