The auction never
leaves the meeting.

Live bidding inside the Zoom window itself. No second tab, no screen share pretending to be a sale.

A Zoom meeting with the Gavel app open in the side panel. The host, Maya, shows a cobalt glass horse on camera while three people bid on it. The round is simulated and repeats.

Gavel3 bidding
Lot 1Reserve met

Glass horse

$

Dana is winning

left

Bidders

6 bids
  1. Dana#51b8Leading · 2 bids
  2. Marcus#9c2e2 bids
  3. Priya#a3f12 bids

Only you and the host can see your amount.

How a lot goes

One lot, from the first word to the hammer.

The host runs the sale from the same side panel the bidders use. Each lot is a round with a clock.

GavelYou're hosting

Up next

2 lots lined up
  1. Brass ship’s clockStarts at $400 · Reserve $650 · 1 minRemove
  2. Hand-knotted wool rugStarts at $1,200 · Buy Now $3,000 · 2 minRemove

Add another lot

Sell Glass horse starting at 950, reserve 1,100, Buy Now 2,000.

30 sec1 min2 min5 min
Add to queueStart this now

The host says what is for sale.

A lot is set up as a sentence: the item, where bidding starts, a reserve if there is one, and a Buy Now price if the host wants one. Start it now, or line the night up in the queue.

Lot 1Reserve $1,100

Glass horse

$

Dana is winning

left

Bidders

4 bids
  1. Dana#51b8Leading · 1 bid
  2. You$25 behind · 1 bid
  3. Marcus#9c2e1 bid
  4. Priya#a3f11 bid

Only you and the host can see your amount.

Everyone bids from the side panel.

The price is the largest thing on the screen, with who holds it under it. The board below reorders as bids land.

Lot 1Reserve met

Glass horse

$

Marcus is winning

left

A late bid adds time.

A bid in the last 10 seconds moves the deadline to 15 seconds after it, so nobody wins by waiting for the final second. The deadline lives on the server and every panel counts down to the same instant.

Lot 1

Glass horse

$

Marcus won it

Sold

So far

  1. Glass horseMarcus$1,240

Raised$1,240

Download CSV1 of 1 sold

The hammer falls.

The clock stops and the lot is stamped Sold, or marked not sold if the reserve was never met. The host keeps a receipt of the night, with a CSV to download for collecting payment afterward.

Reserve and Buy Now

Both are optional, per lot. Buy Now can never sell below the reserve.

Rounds from 30 seconds to 5 minutes

The host picks the length when the lot is set up, and can end a round early.

Only the host runs the sale

Zoom tells the server who started the meeting, and every host action is checked against it.

Try bidding

Bid on the glass horse.

This is the panel a bidder gets in the meeting, running against three pretend bidders in your browser. Nothing you do here is sent anywhere.

You are seeing what a bidder sees.

GavelBidding is open
Lot 1Reserve $1,100

Glass horse

$

No bids yet. The opening bid is yours to take.

left

Bidders

0 bids

Nobody has bid yet.

For bidders

Fair to the room, and quick.

What a bidder can see, what Gavel does for them, and how fast a bid travels.

Amounts stay private.Everyone sees the ranking and the current price. Any other amount shows as a lock, except to the person who bid it and the host.

Bidders

4 bids
  1. Marcus#9c2eLeading · 1 bid
  2. Dana#51b81 bid
  3. You$100 behind · 1 bid
  4. Priya#a3f11 bid

Only you and the host can see your amount.

A max bid does the tapping.Set the most you would pay. Gavel bids for you $25 at a time, and only as far as it takes to stay ahead.

Your max is $1,400. Gavel is bidding for you.

Buy Now ends it.Two taps take the lot at the host’s Buy Now price. If two people try at once, one gets it and the other finds the round closed.
Lot 1

Glass horse

$

You won it with Buy Now

Sold
You are told the moment you are passed.A banner, and in a meeting a sound: when bidding opens, when you are outbid, through the last five seconds, and when the hammer falls.

On every screen in 160 to 370 milliseconds.

That is tap to every other panel, measured on the production deployment inside a meeting. Tap Bid and watch the other screen: each tap waits 160, 265 or 370 ms.

Your screen$950
Everyone else's screen$950Waiting for a bid
Questions

What people ask first.

Do bidders have to install anything?

In Zoom, a bidder opens Gavel from Apps, or the host taps Invite all and everyone in the meeting gets a prompt. Anyone who is not in the Zoom client can bid from a browser with the join link.

Who can start and stop a lot?

The meeting host. Zoom tells the server who started the meeting through a signed webhook, and every host action is checked against it. Co-hosts cannot run lots yet.

Can other bidders see what I bid?

They see the ranking, how many bids each person has made, and the current price with the name of whoever set it. Your other amounts are shown only to you and to the host.

What if two people bid the same amount at the same moment?

The server takes bids for a lot one at a time. The first to arrive holds the price, and the other is told the new lowest bid.

How do winners pay?

Outside the app. The host downloads a CSV with each lot, its final price and its winner, and collects payment however they normally do. There is no checkout in the panel.

Can I try it without a meeting?

Yes. Opened in a browser, the panel runs as a sandbox session: start a lot, copy the join link into a second tab, and bid against yourself.

Put your first lot up.

Say what is for sale, where bidding starts and how long it runs. Open the panel in a browser to try a sandbox auction now, no meeting needed.