Purpose
Order-Book Depth puts the live exchange order book on your crypto chart: a right-edge histogram of resting bids and asks around the current price, with the largest resting walls promoted to labeled levels and a bid/ask imbalance readout.
Crypto is the one asset class where the real resting liquidity is public. This indicator turns that book into chart structure, so you can see where the market is actually willing to transact size before price gets there.
Best used for:
- Locating defended levels: a fat bid wall below price is a level someone is currently willing to defend with real orders.
- Anticipating supply shelves: a large ask wall overhead is where a rally will meet resting supply, so expect absorption, rejection, or a meaningful chew-through.
- Reading pressure at a level: bid-heavy imbalance while price holds support reads as genuine defense; price rising into an ask-heavy book is a thin-air rally prone to slipping.
- Confluence with structure: a depth wall stacked with a volume node or a key level is a high-conviction zone; a lone wall deep in the book is decoration.
What you see on the chart
- A depth histogram in the right gutter: resting bids in teal below the current price, resting asks in red above it, binned by price so the shape is readable rather than a spike per order.
- Promoted walls: the largest resting bin on each side draws in a brighter, hotter shade and gets an axis label ("bid wall", "ask wall") at its price. Up to two walls per side.
- An imbalance readout in the legend: how bid-heavy or ask-heavy the book is within two percent of the mid price, alongside the venue the book comes from.
The histogram refreshes about every 30 seconds while the indicator is on and the chart is visible.
How to read it
- A wall is a defended level only while it rests. Order books are not commitments; walls get pulled. A wall that survives an actual test is worth far more than one that has never been touched.
- Fresh walls near spot are the actionable ones. Liquidity three percent away is background scenery; the book within a percent of price is where the next decision happens.
- A clean chew-through is information. When price eats through a large ask wall and keeps going, the supply was real and demand beat it. That is a stronger bullish signal than rallying through empty book.
- Imbalance is a divergence tool. Price holding a level on a bid-heavy book is defense working. Price pushing up into an ask-heavy book is a move without support underneath; be quicker to take profits.
- Beware of spoof-shaped behavior. A giant wall that repeatedly appears and vanishes without ever filling is being shown, not offered. Weight walls by how they behave under test, not by size alone.
How the engine works
The desk fetches the live order book (up to 100 price levels per side) from the resolved centralized exchange for the charted pair, typically Kraken or OKX depending on where the pair trades. The snapshot is shared and cached for 30 seconds, and it is only fetched while the indicator is actually on.
Everything visual is computed in your browser from the raw book: prices are binned by your chosen width around the mid price, the largest bins are promoted to walls, and the imbalance is measured over a fixed window of two percent either side of mid. Because the payload is one raw snapshot, every setting change repaints instantly without refetching.
Honest limitations: this is one venue's book, not global liquidity; large flows on other exchanges and in perpetuals will not appear. And a book is intent, not commitment: it shows where orders rest right now, and those orders can cancel the moment price approaches.
Key settings
- Gutter width: 8 to 40 percent of the pane.
- Bin width: 0.1, 0.25, or 0.5 percent of the mid price. Finer bins show structure on majors; coarser bins tame noisy books.
- Label the largest resting walls: promote top bins to labeled levels, on or off.
- Bid/ask imbalance readout: on or off.
- Opacity: 10 to 100 percent.
Availability
Centralized-exchange crypto charts only; the one indicator in the suite exclusive to crypto. Not available on equities, indices, or pairs charts. Included from the Plus plan up.
Order-Book Depth is an AI Trading Desk indicator. See it on a live chart in the AI Trading Desk, or browseevery guide.
Educational and analysis purposes only. Not financial advice. See theterms.