The custom screener differs from the others by one rule, and it is worth learning before your first setup: every condition you turn on must be met at the same time. Not “price OR turnover” but “price AND turnover AND open interest” — within one minute and on one exchange.
One setup rule follows from that: each condition you add makes the screener stricter, not richer. Thresholds here are set noticeably lower than in the standalone screeners: the value comes from the coincidence, not from the strength of each condition on its own.
In short
The screener fires when every condition you enabled is met at the same time and on the same venue. This is AND, not OR.
There are three conditions: open interest, price, and 24-hour turnover. Each has its own percentage threshold and its own window — from 1 minute to 4 hours.
A threshold can be negative: a price of −4% means a fall of 4% or more.
Where to start: two conditions with thresholds below the usual ones, the same window for both, and a pause between alerts on one coin.
Scenarios
When should this screener fire?
2 of 3
OI trigger
Open-interest based trigger
Price trigger
Price-change based trigger
Turnover trigger
Turnover based trigger
Limits
Cap how often the screener may fire on a single coin
1 of 1
When on, limits how many alerts the same coin can generate, so you do not get dozens of notifications about the same move.
Filters
Narrow what counts as a hit
Custom screener conditions
Each condition is a percentage threshold plus a window: the screener compares the value now with the value that many minutes ago. Turning on all three is optional — and usually unnecessary: the price + open interest pair already cuts almost all of the noise this screener exists for.
The sign of a threshold picks the side of the move
A positive threshold catches growth only, a negative one catches falls only. A threshold of +3% will not fire on a drop of any size, and that is not a bug: the side of the move is part of the condition here.
Threshold
Fires on
Does not fire on
+3%
Growth of 3% or more over the window
Any fall
−3%
A fall of 3% or more over the window
Any growth
0
Nothing: an enabled condition with no threshold stops the whole screener
—
Windows can differ between conditions
Illustrative example: “price +3% in 15 minutes while open interest grew 2% over an hour” describes an entry that was prepared in advance rather than a reaction to news. It is a powerful trick, but start with the same window on every condition — that way you can tell what you actually caught.
Limits: how many alerts you are willing to read
An alert is sent when the conditions come together: if all of them were already met a minute earlier, the screener stays quiet. So a single move does not turn into an alert every minute by itself.
Limits are for the other case — when a move keeps assembling the combination and letting it fall apart again. The pause sets a minimum interval between alerts on one coin: with 15-minute condition windows, a 60-minute pause means “no more than one reminder per hour per coin”.
Filters: which coins to test the conditions on
Filters answer which coins the combination is checked on at all: which market to count, the floors for open interest and turnover in millions of dollars, and whether to work only through favourites. The ready-made setups below use 3 to 5 million dollars for open interest and 10 million for turnover.
The cost of a mistake is higher here than in the other screeners: strict thresholds together with strict filters produce a silence in which you cannot tell which part is to blame. Relax one condition, or one filter, at a time.
Ready-made setups
These are the same sets applied with one click in the screener settings. The values below are exactly what gets filled in.
Price, OI and turnover rise together
Price +3% · OI +1% · Volume +1.5%
Period
360 min.
Pause between alerts per coin
360 min.
Which market to watch
Futures only
Min. Open Interest Value
5 M $
Min. Exchange 24h Turnover
10 M $
Logic: within the same 15 minutes price, 24h turnover and open interest all rise — all three conditions must line up at once. The OI threshold is low on purpose: it checks that positions are being opened on the rise, not closed; any stricter and the preset stays silent for days. Open interest from $5M, turnover from $10M.
Price rise with new positions
Price +4% · OI +10% in 10 min
Period
240 min.
Pause between alerts per coin
80 min.
Which market to watch
Futures only
Min. Open Interest Value
3 M $
Min. Exchange 24h Turnover
10 M $
Logic: price rises while new futures positions are opening — the rise comes with positions being added, not closed. 10-minute window, open interest from $3M, turnover from $10M.
Price falls, OI rises
Price −4% · OI +8% in 20 min
Period
360 min.
Pause between alerts per coin
180 min.
Which market to watch
Futures only
Min. Open Interest Value
4 M $
Min. Exchange 24h Turnover
10 M $
Logic: price falls while open interest rises — new positions are opening into the drop. Whether they are longs or shorts, OI alone does not show. 20-minute window, open interest from $4M, turnover from $10M.
Price rise on rising turnover
Price +6% · turnover at double pace in 30 min
Period
240 min.
Pause between alerts per coin
60 min.
Which market to watch
Spot and futures
Min. Exchange 24h Turnover
10 M $
Logic: price rose within half an hour, and over the same half hour 24h turnover picked up noticeably — the rise happens on elevated activity, not in an empty order book. The open interest filter is off so the combo also works on spot, where there is no open interest; turnover from $10M.
Any set is a starting point, not a recommendation. Once applied the thresholds are yours: move them and the screener starts counting the new way immediately.
Common mistakes when setting up the custom screener
Thresholds copied from the standalone screeners. Three conditions at 5% each is not a strict screener, it is a disabled one. The ready-made “Price, OI, and turnover rise together” setup uses 3%, 1%, and 1.5%.
Expecting OR logic. If you want independent alerts on price and on turnover, that is two separate screeners, not one custom screener.
Windows too far apart. A “price per minute” condition together with “turnover over four hours” will almost never line up: events of different scale rarely land in the same check.
An empty threshold on an enabled condition. A zero or an empty field stops the whole screener, not just that row: no alerts arrive on any condition.
Custom screener setup FAQ
Which window should I pick for a condition?
The window is how far back the screener looks: the value now against the value N minutes ago. The choice runs from 1 minute to 4 hours. Short windows (5–15 minutes) catch the impulse, long ones (60–240 minutes) catch accumulation. Start with the same window on every condition you enable.
Why is the custom screener silent?
Three common reasons. Thresholds: three conditions carrying the thresholds of the standalone screeners almost never coincide. An empty field: a zero and an empty value are the same thing to the screener, and an enabled condition with no threshold or no window stops the whole screener — nothing arrives on any condition, so such a condition has to be either filled in or switched off. And strict liquidity floors on top of strict thresholds.
Do the conditions have to be met on the same exchange?
Yes. The combination is checked venue by venue: a price rise on one exchange and an open-interest rise on another do not count as a combination. That is why the alert lists the venues where everything came together at once.
Can I set a negative threshold?
Yes, the field accepts a minus: a price of −4% means a fall of 4% or more. That is how a divergence is assembled — price falling while open interest grows. A positive threshold will not catch a fall of any size.
Why do I get too many alerts on one coin?
The screener sends one alert when the conditions come together, but while the move continues they can come together again. Cap the frequency with the pause between alerts on one coin and with the per-coin limit for a period: the ready-made setups use pauses of 60 to 360 minutes.
Does an open-interest condition work on spot?
No. Open interest does not exist on spot, so an enabled OI condition cannot be met on any spot venue — and a non-zero open-interest floor in the filters does the same. If you need spot, keep the price and turnover conditions.
How is this different from three screeners switched on separately?
The logic. Three separate screeners give you three independent streams of alerts: anything fires, an alert arrives. The custom screener gives one stream in which only a coincidence counts as an event.
Which window should I pick for a condition?The window is how far back the screener looks: the value now against the value N minutes ago. The choice runs from 1 minute to 4 hours.Why is the custom screener silent?Three common reasons. Thresholds: three conditions carrying the thresholds of the standalone screeners almost never coincide.Do the conditions have to be met on the same exchange?Yes. The combination is checked venue by venue: a price rise on one exchange and an open-interest rise on another do not count as a combination.Can I set a negative threshold?Yes, the field accepts a minus: a price of −4% means a fall of 4% or more. That is how a divergence is assembled — price falling while open interest grows.Why do I get too many alerts on one coin?The screener sends one alert when the conditions come together, but while the move continues they can come together again.Does an open-interest condition work on spot?No. Open interest does not exist on spot, so an enabled OI condition cannot be met on any spot venue — and a non-zero open-interest floor in the filters does the same.How is this different from three screeners switched on separately?The logic. Three separate screeners give you three independent streams of alerts: anything fires, an alert arrives.
?Which window should I pick for a condition?
The window is how far back the screener looks: the value now against the value N minutes ago. The choice runs from 1 minute to 4 hours.
Everything described above is set up in the screener: pick a ready-made setup or your own thresholds, and alerts arrive by push or Telegram.
What this article covers, JustScreener checks across 7,300+ pairs on 10 exchanges every minute. Set your own threshold and get a push or Telegram alert when the market matches it. On the right — what the screeners sent recently.