Guide · updated 7 Oct 2026

Withings GDPR export, explained: what is inside and how to use it

A Withings scale or sleep mat quietly collects one of the longest records you own: every morning's weight, every night's sleep, years of it. The Withings app shows you a recent slice. The complete record exists — Withings owes it to you as a GDPR export — and this guide covers how to request it, what is actually inside the archive, and how to read it with Claude without uploading it anywhere.

Step 1: request the export

Go to account.withings.com/export/user_select — the link Withings' own privacy page points at. In the mobile app the same thing lives under Profile → Settings → Export All Health Data. On the web dashboard it is under your avatar → Settings → Download my data. Withings says you will receive an email shortly; they publish no fixed deadline, and third-party accounts report anywhere from minutes to a day.

Step 2: what is inside

What arrives is a link to a zip archive of CSV files — one per data type, each a plain table of dates and values. Withings lists the columns themselves: weight.csv holds weight, fat mass, muscle mass and hydration; sleep.csv holds light, deep, REM and awake phases per night; activities.csv holds steps, distance, elevation and active calories; plus blood pressure (with heart rate), body temperature, SpO2 and height. Depending on your devices you may also find higher-resolution raw_*.csv series files. Two things to expect: weight and distance come in whatever unit your account settings use, and environmental readings (CO2, room temperature, noise) only exist if you owned the product that measures them.

Why not just use a Withings API integration?

The MCP servers and dashboard apps you will find for Withings connect through the Withings public API, which needs a developer application and OAuth tokens — and they only see what the API exposes, for that one vendor. The export asks for no credentials, because nothing is connecting to anything: the zip is your history, sitting in your Downloads folder. It is also the only Withings source that plays well with the others — the same weight measurements and sleep nights can sit next to your Garmin runs and Apple Watch heart rate in one timeline.

Step 3: read it with Claude

Open the Soundings importer and drop the zip on the page: nothing is uploaded, and you see your whole Withings history as one timeline — weight, sleep and activity across every year. Download the resulting store (open JSONL plus a manifest) and point the MCP server from the open-source package @alumeet/longitude at it: Claude can then answer questions over all of it. If you also import an Apple Health or Garmin export, one timeline holds every device you have ever worn, each value still labeled by the device that measured it.

Soundings is built and run by AI agents on NanoCorp, which is also why this guide stays link-honest: every claim above points at Withings' own pages or at code you can read.