Alerts
Rules that watch the feed and notify you in the browser.
The tool runs at /alerts and needs a $49.99/mo membership. There is no free tier and no trial, so opening it signed out lands on the pricing page rather than the board. This page is the open documentation of what it does.
Alerts turns the boards you would otherwise sit and stare at into rules. Six types are available: a specific wallet trading above a size you set, a specific wallet selling or reducing, any sharp above a score you choose entering above a size you choose, a number of sharps converging on one market, an insider flag above a signal strength, and a Kalshi block or large print above a dollar threshold.
Delivery is a browser notification, and that is the only channel. There is no push server, no mobile push, no email, and no chat relays — those do not exist in this product and are not coming.
How a rule fires
An engine mounts app-wide and evaluates your rules on a fifteen-second tick against the same feeds the boards read. When a rule matches, the match is recorded and a browser notification is raised — provided you have granted notification permission, which the page prompts for and reports the state of.
The engine issues no network request at all until the device has at least one saved rule, so an account that has never made a rule costs nothing.
The open-tab requirement, stated plainly
Rules are evaluated by a page running in your browser. Evaluation deliberately pauses while the tab is hidden, and stops entirely when the tab is closed. This catches new positions on the sessions you are actually at the screen, and it will miss everything that happens overnight.
That is a real constraint rather than a soft one, and it is the single most important thing to understand before relying on this tool. If a signal must reach you while you are away from the machine, this is not the mechanism.
Why nothing double-fires
Each potential alert carries a stable dedupe key. Trade-driven rules key on the exact trade — wallet, timestamp, side, outcome and rounded size — so two genuinely distinct trades never collide and a re-poll of the same trade never re-notifies. Consensus rules key on the market and the lean direction rather than the sharp count, which would otherwise re-fire every time one wallet's holding nudged the tally.
Fired alerts are kept as a local log you can mark read or clear, and the log seeds the dedupe set on reload so a page refresh does not replay yesterday's notifications.
Where rules come from in practice
The natural workflow is to build them from other tools. Star a wallet on the leaderboard, watch it for a while on the Watchlist, and once you care about it, add a rule so its next entry above a size that matters reaches you. Consensus and insider rules work the other way round — they are standing questions about the whole board rather than about one trader.
Rules are stored in your browser, which keeps them private and means they belong to that browser alone.
What it cannot tell you
Every tool has a boundary, and knowing where it sits is the difference between using one well and being misled by it. For Alerts:
- Browser notifications only. No push server, no mobile push, no email, no Discord and no Telegram — none of those channels exist here.
- A WhaleTracks tab must be open and visible. Evaluation pauses in a hidden tab and stops when the tab is closed.
- Rules and fired history live in one browser's storage. They do not sync to another device and are not backed up.
- Alerts read the same feeds the boards read, so they are not faster than the feed — they just mean you do not have to watch it.
- Browser and operating-system notification settings can suppress delivery silently, and a lapsed membership stops the underlying feeds.
- A rule fires on a pattern you specified. It is not a recommendation, and no rule can tell you whether the price is still good by the time you look.
What it is built on
- The live trade feed, for wallet, exit, sharp-entry and Kalshi-block rules.
- The Insider Radar flags, for insider rules.
- The Sharp Consensus rows, for convergence rules.
- Your browser's local storage and its Notification API, which is where rules live and how they are delivered.
Related reading
- Prediction Market Alerts: Browser Rules That Watch Sharp Money on Polymarket and Kalshi — Guide
- Exit Alerts: A Browser Rule That Tells You When a Tracked Wallet Sells — Guide
- How to Copy Trade (Tail) Sharp Wallets on Polymarket — Strategy
Tools that pair with it
Large trades from scored wallets, streaming across both venues.
The wallets you follow, and what they are holding.
Where tracked sharp capital leans, market by market.
WhaleTracks is informational analytics, not financial advice. Market data comes from Polymarket, Kalshi and Manifold's public APIs; WhaleTracks is not affiliated with any of them. Past performance does not guarantee future results.