Personal Productivity medium to set up

Nutrition And Fitness Tracker

Users log food or activity via webhook; the system estimates calories, updates daily totals in Google Sheets.

Verified 2026-07-07

Developer-EngineeringHealthcare

What it does

You automatically log your meals and workouts via a webhook to instantly get calorie and protein estimates while tracking your daily totals in Google Sheets. You receive immediate Slack alerts whenever you exceed your limits or face potential health risks, ensuring you stay informed about your nutrition and fitness progress without manual entry.

How it works

When it runs: Triggered by an event · Webhook input and Scheduled daily reset
How hands-off: Assists you, you do the final step
Setup: An afternoon · about an afternoon
Works with: OpenAI Chat Model, Google Sheets, Slack

Tools that fit

LLM

OpenAI Chat Model : Classify food or activity and estimate nutrition data

Services

Google Sheets : Store user profiles and daily metrics

Slack : Send alerts for calorie limits or health risks

Watch out for

Ambiguous user inputs like 'lunch' can confuse the classifier, so add a system prompt that requests specific details or defaults to a generic entry.
Google Sheets API quotas may be exceeded during high-volume testing, so implement batch updates instead of row-by-row writes.
Slack alerts might spam users if thresholds are too sensitive, so add a cooldown period or daily summary aggregation for non-critical warnings.
Calorie estimates from LLMs can vary significantly between runs, so standardize the output format and consider adding a confidence score to each prediction.

Seen in the wild

n8n: Track nutrition and fitness via webhook with OpenAI, Google Sheets and Slac template

Want this running in your business?

This is what I do. I design and build AI agents like this one, and keep them running. If you want it set up for your team instead of doing it yourself, get in touch.

Get in touch

Who it's for

Built for developers who want the busywork around code automated, not the code itself.

Also fits Healthcare.

Frequently asked questions

Who is this for?

developers and engineers and Healthcare, or anyone doing personal productivity work who wants this handled automatically rather than manually.

How long does it take to set up?

An afternoon: plan for about an afternoon to get it running end to end.

Related use cases

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