Chrome extension · Binance · Bybit · Bitget · Gate · OKX
Set your maximum leverage once.It only ever goes down.
One moment of raising leverage is what empties most accounts. This takes that moment away from you.
- No API keys
- No account
- Nothing leaves your browser
One ceiling, set once, active on all five futures pages.
What you see
50× simply stops happening.
Drag past your ceiling and the slider snaps back. The confirm button stops responding. If the page still tries to send it, the request never leaves your browser.
Why it holds
Two layers, not one.
Anything that lives only in the page can be undone in the page. So the block happens twice.
Layer 01 — in the page
The slider snaps back
Loaded before the exchange's own scripts, so the leverage dialog is watched from the moment it appears.
Layer 02 — in the browser
The request is stopped
Blocked inside your browser before it ever reaches the exchange's servers.
The second layer does not depend on the exchange's design — so a redesign cannot quietly switch your protection off.
Setup
Sixty seconds, once.
No account, nothing to connect. It all happens in the popup.
Pick your maximum
Use the slider or type it. Choose the number for your worst day, not your best one.
Lock it
Press Lock this leverage. This is the last time you can raise it.
Trade as usual
Below your ceiling nothing changes. Above it, everything is refused.
Lowering the limit stays open forever. Raising it never does.
Before you install
What it deliberately can't do.
Judge a tool that sits on your exchange pages by what it is unable to do.
No API keys
There is no field for one. It cannot see your balance, orders or positions, and cannot trade.
Nothing is sent anywhere
Your ceiling stays on your machine. No analytics — we cannot see how you use it either.
No account
No email, no password. A purchase is tied to the installation, not to a person.
Not unbreakable
You can always uninstall it. That door is open on purpose — and it is why the price exists.
Desktop browser extension. It does not cover an exchange's mobile app, and it is not position sizing.
Pricing
The number isn't a price. It's a deterrent.
Free for the first day. After that, one payment unlocks it permanently in that browser — and you choose the amount.
Uninstall the extension and the licence goes with it — using it again means paying again. Deleting it is the only way left to raise your leverage, so deleting it has to cost something. You decide how much.
Ten dollars stops nobody at 3am. Pick the number that would.
Questions
The ones worth asking.
Do I have to give you API keys?
What happens when the free day ends?
Can I move my licence to another browser?
Why would anyone pay more than $10?
What if the exchange redesigns its interface?
Does it work on my phone?
Can I get a refund?
Decide it now, while nothing is happening.
Not investment advice, and not an unbreakable lock — it adds friction, it does not make anything impossible. Leveraged futures trading can lose you more than you put in.