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Vagal Hub
Vagal Hub
Vagal Hub
Vagal Hub plugged into a USB charger in a wall socket
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Vagal Hub

Pre-order now. Ships from 20 November.

Plug it in by your bed and forget it. Vagal Hub is a small Wi-Fi stick that collects your overnight oxygen and pulse from a Wellue O2Ring, and lets Harv or your own Claude run your Buddy sessions with no phone or browser left open.

  • Overnight SpO2 and pulse, collected automatically
  • Hands-free Buddy sessions with Harv, Vagal's built-in AI guide
  • Stimulation and oxygen on one clock, timed to the second
  • Download nights as CSV, sessions value by value, and Buddy session logs
  • Works with heart rate straps; nothing lost if Wi-Fi drops

Works with Vagal Buddy, the Wellue O2Ring (sold separately) and Bluetooth heart rate straps. Needs 2.4 GHz Wi-Fi and a vagal.com account. Not a medical device.

One-time purchase
$4900
Pre-order: ships from 20 November·  Free shipping from the United States

Pre-order: ships from 20 November

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Vagal Hub

Plug it in by your bed. It takes care of the rest.

Vagal Hub is a small Wi-Fi stick that plugs into any USB charger by your bed. Overnight it collects your blood oxygen and pulse from a Wellue O2Ring. During the day it holds the connection to your Vagal Buddy, so Harv or your own Claude can run your sessions. There's no phone to keep nearby, no browser tab to leave open and nothing to sync in the morning.

  • Overnight SpO2 and pulse
  • Hands-free sessions with Harv
  • One clock for every signal
  • Nothing lost if Wi-Fi drops
  • Your data as files
  • Set up once

Pre-orderShips from 20 November. See the hub page

Vagal Hub plugged into a white USB charger in a wall outlet, its screen showing the Vagal.com logo
Runs from any USB-A charger by your bed.

One night with Vagal Hub

From your evening session to your morning data, hands-free

  1. Evening

    Your session, without the phone

    Ask Harv, or your own Claude, to run your evening Tone. The hub holds the Bluetooth link to your Buddy, so nothing depends on your phone or an open browser tab.

  2. Overnight

    Your oxygen is recorded as you sleep

    Wear a Wellue O2Ring. It records your blood oxygen (SpO2) and pulse rate all night, and the hub keeps watch, so you can see the live reading at vagal.com/hub. If the Wi-Fi drops, nothing is lost: the ring keeps its own recording.

  3. Morning

    Your night is already there

    A few minutes after you take the ring off, the hub copies the night to your account. The hub sets the ring's clock, so your night and your session are timed to the same second, ready for you, Harv or Claude to compare.

One small hub between your devices and your account

Each device keeps its own Bluetooth link to the hub. Only the hub needs Wi-Fi, and everything you see or control goes through your vagal.com account.

By your bed

  • Vagal Buddy
  • Wellue O2Ring
  • Heart rate strap
  • Vagal Oh! and Toner Soon
Bluetooth

In a USB charger

Vagal Hub

Keeps one clock for every device and holds the link to your Buddy.

Wi-Fi

Online

Your vagal.com account

Used by you, Harv and your own Claude. Watch and control your hub at vagal.com/hub.

What it does

Everything here works from the day your hub arrives.

Overnight oxygen and pulse

Collects each night's SpO2, pulse rate and movement from a Wellue O2Ring, and shows the live reading while you wear it.

Hands-free Buddy sessions

Harv or your own Claude can start, adjust and stop your Buddy sessions through the hub, within safety limits the hub enforces itself.

One clock for every signal

The hub sets the ring's clock and time-stamps every session from its internet-synced clock, so stimulation, oxygen and pulse line up to the second.

Your data, as files

Chart any night, or download it as CSV or as the ring's own raw file. Every session the hub runs is also recorded value by value, as a file you can download.

Buddy session logs, no computer

Your Buddy's own session logs are copied to your account automatically, and cleared from the device only once they are safely stored.

Heart rate straps

Pair a standard Bluetooth chest strap, such as the Polar H10, and the hub reads your heart rate during sessions.

Keeps going when the Wi-Fi doesn't

If your internet drops, the hub ends any running session safely and the ring keeps recording. Everything uploads once you're back online.

Updates itself

New features and fixes install over Wi-Fi, in the daytime when nothing is running. If an update ever fails to start, the hub rolls back to the last version that worked.

See it all at vagal.com/hub

What the hub is connected to right now, a copy of its screen, your nights and sessions, and its activity in plain words. Stop a session from there at any time.

Coming in updates

These install over Wi-Fi as they're released.

  • Morning report. Lowest SpO2, oxygen drops per hour, time below 90%, pulse, overnight HRV and the stimulation you did, by email or in the app.
  • Night and session on one chart. See a night and the session before it together.
  • Vagal Oh! and Toner sessions. The hub already recognises both. Hands-free sessions for them come next.
  • HRV from heart rate straps. Beat-to-beat HRV recorded alongside each session.
  • Stimulator firmware updates. Keeps your Buddy and Oh! up to date, with no computer or phone.
  • Gentle notices. A heads-up for a low battery, poor electrode contact, a ring left off or a hub that has gone quiet for a day. Never alarms.
  • EDF export. Per-night files in EDF, the standard sleep-lab format, alongside today's CSV.
  • Clinician access. Share your nights with your clinician from your account, and take access back at any time.
  • Bedtime prompts. A reminder to start your evening Tone. You still start it yourself.

Meet Harv

Harv, your Vagal guide, comes built in

Harv is Vagal's own AI guide. Harv lives in the Vagal app and on vagal.com, knows your Vagal devices, and can run a session for you through the hub. There's no separate AI account to set up.

What Harv does

  • Starts, adjusts and stops your Buddy sessions through the hub when you ask
  • Walks you through a before-and-after HRV check: a short baseline, your session, then recovery
  • Shows how your heart rate and HRV changed, in plain words
  • Works within the same safety limits as everything else, and never starts a session you didn't ask for
Try Harv in the HRV Lab

The HRV Lab needs a computer with Chrome or Edge and a Bluetooth chest strap. Harv is also in the Vagal app.

Harv, your own Claude, or the app?

  • HarvBuilt in, nothing to set up. Open Harv in the Vagal app or on vagal.com.
  • Your own ClaudeFor people who want to use their own Claude account and tools. Add it as a custom connector from vagal.com/hub. Needs Buddy Research Edition.
  • The Vagal appPrefer to run sessions yourself? Press Disconnect at vagal.com/hub and the hub lets go of your Buddy for an hour, so the app can connect.

Who it's for

People using Vagal at home

See what your nights look like after your sessions. Your oxygen, pulse and stimulation share one clock, and Harv can run your evening session without you reaching for a phone.

  • Nightly SpO2 and pulse with nothing to open
  • Hands-free sessions with Harv
  • Nothing to sync or remember

Clinicians

Follow patients between home sleep tests. See their nightly oxygen and pulse, and which sessions they actually did.

  • Patients can download any night as CSV and send it to you today
  • Your own access to patients' nights, with consent Soon
  • Session adherence: what ran and for how long Soon
  • Presets, so patients only switch on and off Soon
  • Hubs that arrive already linked to the patient's account Soon
  • EDF export for your own software Soon

Researchers

Collect paired, time-aligned data from participants' homes, not just the lab.

  • Stimulation and SpO2 on one clock
  • Overnight capture with nothing for participants to sync
  • Value-by-value session recordings and Buddy session logs
  • Per-night CSV and the ring's raw files
  • Your own Claude, connected to your data (Research Edition)
  • HRV from standard chest straps Soon
  • Scheduled protocols with blinded sham and active arms Soon
  • Audit log and EDF export Soon

Set up once, then forget it

Setup takes a few minutes with your phone or a computer. After that the hub runs on its own.

  1. Plug it in by your bed

    Use any USB wall charger. In a few seconds its screen shows a square code.

  2. Give it your Wi-Fi

    Scan the code with your phone camera, or connect over Bluetooth or USB from vagal.com/hub in Chrome or Edge. Pick your network and type the password. It goes straight to the hub, never over the internet.

  3. Add it to your account

    Scan the next code on its screen, or type its six digits at vagal.com/hub. It then finds your ring and stimulator by itself. If there are several nearby, you choose yours once.

On an iPhone?

Use the phone camera. It works on any phone and needs no app. Safari can't use Bluetooth or USB.

Through your clinic? Soon

Your hub will arrive already linked to your account, so you only add your Wi-Fi.

New router or password?

Unplug the hub and plug it back in three times, waiting for its screen to light each time. It then shows the code to scan again.

Safe by design

The hub never starts stimulation by itself, and its limits hold even when the internet doesn't.

  • Never starts on its ownYou, Harv or your own Claude start every session, and only when you ask. Reminders remind; they never start anything.
  • Limits on the hub itselfMaximum intensity, current and session length are enforced in the hub's firmware as well as on our servers.
  • Fails safeIf the connection drops mid-session, the session ends safely, and no new one starts until the link is back.
  • One controller at a timeThe hub or the Vagal app, never both. Press Disconnect at vagal.com/hub and the hub lets go of your Buddy for an hour.
  • No passwords on the stickThe hub has its own credential, which you revoke by removing it at vagal.com/hub. It never stores your vagal.com password or your Buddy's key.
  • Your data stays yoursYour nights and sessions are kept with your account. Download them whenever you like, or ask us to delete them.
  • Signed updates onlyThe hub only installs updates that come from Vagal.
  • Lost it, or passing it on?Remove it at vagal.com/hub. It goes back to its setup screen and can't send anything to your account again.

Works with

Your devices

  • Vagal BuddyHands-free sessions with Harv or your own Claude (your own Claude needs Research Edition). Session logs copied to your account.
  • Wellue O2RingOvernight SpO2, pulse rate and movement, with a live reading while you wear it.
  • Bluetooth heart rate strapsSuch as the Polar H10, for heart rate during sessions. HRV Soon
  • Vagal Oh! and TonerRecognised and shown at vagal.com/hub. Hands-free sessions Soon

What you'll need

  • A vagal.com accountYour hub is linked to it during setup.
  • 2.4 GHz Wi-Fi at homeAlmost every home router has it. Networks with a sign-in page, like hotel or hospital Wi-Fi, won't work.
  • A USB charger near your bedA standard USB-A plug, close enough to the bed for Bluetooth.
  • A phone or computer for setupAny phone camera, including iPhone. Or Chrome or Edge on Android or a computer, over Bluetooth or USB. Recent Macs need a USB-C adapter for USB.

Specifications

FormUSB stick with a small status screen
PowerAny USB-A charger or port
BluetoothBluetooth Low Energy, to your devices
Wi-Fi2.4 GHz, to your vagal.com account
When offlineThe ring keeps recording; the hub uploads when the connection returns
UpdatesAutomatic over Wi-Fi, with automatic rollback
SetupPhone camera on any phone, or Bluetooth or USB from Chrome or Edge
ExportsNights as CSV or the ring's raw file; sessions value by value; EDF Soon
AIHarv built in; your own Claude through a custom connector (Research Edition)
Your dataKept with your vagal.com account; deletion on request

Vagal Hub is a wellness and research product. It is not a medical device and is not intended to diagnose, treat, cure or prevent any disease. Harv and Claude are AI assistants: they can make mistakes and do not give medical advice. Features marked Soon are in development and arrive through updates. Wellue and O2Ring are trademarks of their respective owners. Claude is a trademark of Anthropic.


Questions and answers

Does Vagal Hub diagnose sleep apnea?

No. It records your oxygen and pulse so you can see your nights, but it is not a medical device. It doesn't diagnose any condition and doesn't sound alarms. If you're worried about your breathing at night, talk to your doctor about a sleep study.