# How to track calories in Claude.

Claude can read a plate and estimate a meal. Nexus gives it somewhere to put the answer: a food and training log with daily totals, as a connector from the Claude directory.

Source: https://nexus.kushalsm.com/track-calories-in-claude/ · Updated 2026-10-15

## Set it up once

1. Open [Nexus in the Claude directory](https://claude.ai/directory/nexus-fitness) and add it.
2. Sign in to Nexus when Claude asks.
3. Tell Claude what you ate.

It works on claude.ai, in the desktop apps and in the Claude mobile apps. The same Nexus account works in ChatGPT, so you can log on one and ask on the other.

## What you can say

> Lunch: chicken burrito bowl, no cheese, extra beans.

> Here's my dinner (photo). Log it.

> Squats today: 5 sets of 5 at 100 kg.

> What did I eat yesterday, and how far off my protein goal was I?

> Plan me a 45 minute pull day.

Claude estimates the calories and macros, Nexus saves them, and your day shows up as an interactive card. Tap a meal or a set to fix a number.

![The Nexus day card: calories and protein against your goals, with each meal listed.](https://nexus.kushalsm.com/guides/images/nexus-iphone-meal-2026-10-14.png)

*The Nexus day card: calories and protein against your goals, with each meal listed.*

## Why a connector and not just a project or memory

Claude's memory and projects can hold notes. They don't add up a day, keep dates straight, or survive a long thread of meals without drifting. Nexus stores every entry with a date and an id, so "how much protein this week" is arithmetic over real entries, not recall.

Other trackers work in chat too. See how they compare: [the best calorie trackers for ChatGPT and Claude](https://nexus.kushalsm.com/best-calorie-tracker-for-chatgpt-and-claude/).

## Questions

### Is there a Claude connector for calorie tracking?

Yes. Nexus is listed in the Claude connectors directory. It logs meals, workouts and body weight, and shows an editable card of your day.

### Can I use it from Claude Code or other agents?

Yes. Nexus is an MCP server, so any MCP client can connect to it and sign in. Agents that want to test first can use the no-account [sandbox](https://nexus.kushalsm.com/try/), including its MCP endpoint.

### Is it free?

Free.