Set up price alerts, settlement notifications, and market movement tracking across platforms.
Kalshi Alerts
Built-in
Poly Alerts
3rd party
Key Levels
10/50/90¢
Read Time
6 min
The key takeaway from this page
Three alert types matter in prediction markets: price thresholds, wallet-level on-chain signals, and resolution notifications. Each platform supports them differently — and one major structural gap separates Kalshi from Polymarket entirely.
Key structural difference
Kalshi uses a private order book — wallet-level tracking is structurally impossible by design. Polymarket runs on a public blockchain — every trade is visible on-chain and trackable with third-party tools. This isn't a feature gap — it reflects two fundamentally different regulatory architectures.
Price Threshold Alerts
Get notified when a market crosses a specific probability. E.g., "alert me when 'Fed cuts in June' passes 70¢." Most useful for traders watching for entry points or risk triggers.
Platform support:
Available natively on Kalshi web and mobile. Polymarket via third-party tools. Robinhood via standard stock-style price alerts.
Best for: Entry/exit triggers, position monitoring
Wallet-Level / On-Chain Alerts
Track a specific wallet's trades in real time. When a large-wallet address enters or exits a market, you get notified. Exclusive to blockchain-based platforms where order flow is public.
Platform support:
Polymarket only — order book is public on Polygon blockchain. Tools like Nansen, Arkham, or Polymarket Watchlist can monitor wallet activity. Kalshi's private order book makes this structurally impossible.
Best for: Tracking known sharp wallets, smart-money signals
News / Resolution Event Alerts
Get notified when a market resolves or when a major related news event triggers a price spike. Some platforms send push notifications on resolution; news-event triggers typically require external tooling.
Platform support:
All major platforms send resolution push notifications. Pre-resolution news alerts require external news APIs or services like Kalshi's email digest.
Best for: Post-resolution payout confirmation, news-driven traders
Alert actionability receipts
A notification can tell you that something changed. It does not automatically explain why, whether the rule matches the headline, or whether the displayed quote is still practical.
| Alert type | What it tells you | What it does NOT tell you | Next check |
|---|---|---|---|
| Price threshold | The displayed market price crossed a chosen level. | Why it moved, whether it is still fillable, or whether the contract rule matches the headline. | Run catalyst, rule-match, liquidity/timing, and fee/wrapper receipts before acting. |
| Liquidity / depth change | The book changed, spread widened/tightened, or size appeared/disappeared. | Whether true outcome probability changed. | Compare depth against intended size and look for source/rule context. |
| Rule / source update | The terms, source, or settlement path may have changed or become clearer. | Whether the price has adjusted enough or whether prior trades were mispriced. | Read the official rule/source text and avoid paraphrasing from social posts. |
| Settlement status | The outcome path moved toward resolution, review, dispute, correction, or payout. | Whether sportsbook void/refund logic applies. | Use contract wording and settlement-source receipts rather than sportsbook assumptions. |
| Wallet / whale flow | A visible wallet or large order changed position where data is public. | Intent, expertise, hedge status, or whether copying is executable. | Use wallet triage and liquidity receipts before interpreting flow as signal. |
What changed outside the market?
Still not proof: A source appearing after the move does not prove the move was tradable before the source was public.
Does the headline match the actual contract wording?
Still not proof: A real-world event can happen and still fail the exact prediction-market rule path.
Did the alert arrive before the opportunity, during the move, or after the book repriced?
Still not proof: A price notification alone does not prove remaining edge or fill quality.
Does the visible price survive fees and wrapper-specific display choices?
Still not proof: A sportsbook-looking price in an app is not the same as sportsbook settlement or fee treatment.
Why prediction markets move
Classify the catalyst, rule path, timing, liquidity, and wrapper risk behind the alert.
Prediction market analysis tools
Match data, alert, wallet, and execution tools to the job they actually do.
Edge-to-execution receipts
Separate signal discovery from rule translation and fill quality.
Wallet evaluation
Check whether wallet flow is expertise, hedging, near-resolution harvesting, or noise.
Note: Polymarket native alert details (push notification types and settings) have not been independently verified from official Polymarket documentation. Displayed as estimated. All other platform alert data has been verified.
| Platform | Native Price Alerts | Wallet Tracking | Resolution Alerts | API / Webhooks |
|---|---|---|---|---|
| Kalshi | Price alerts (web + app) | ❌ Not possible (private order book) | ✅ Push + email | ✅ WebSocket API (real-time market + fill data) |
| Polymarket | Limited (see note below) | ✅ Via on-chain tools (Polygon) | ✅ On-chain event + app notification | ✅ CLOB WebSocket API (market + user channels) |
| Robinhood | Standard price alerts (stock-style) | ❌ Not applicable (centralized) | ✅ Push notifications | ❌ No public API |
| ForecastEx | TWS price alarms (bid/ask/last; email, SMS, or popup) | ❌ Not applicable | ✅ Account notifications | ✅ Via IB Web API (websocket streaming for event contracts) |
Kalshi: Best native alert UX for standard traders. Private order book is intentional regulatory design — it prevents front-running but also blocks wallet-level signals.
Polymarket: Most powerful alert ecosystem for sophisticated traders. On-chain transparency enables wallet-level signals no other platform can match. Native app alerts are limited — supplement with external tools.
Robinhood: Adequate for casual traders already using Robinhood. No meaningful alert advantage over stock notifications. Not suited for active PM-specific monitoring.
ForecastEx: Professional platform (Interactive Brokers). IB Web API supports websocket market data streaming for ForecastEx event contracts. Native TWS price alerts apply to all IB instruments. Niche audience with advanced tooling.
Most traders set too many alerts and ignore them all. These three principles improve signal-to-noise dramatically.
Kalshi is a CFTC-designated contract market (DCM) — a federally regulated exchange modeled after futures markets. Exchange-level regulation requires a private order book to prevent front-running, protect trader identity, and meet market integrity standards. This is the same reason you can't see who's on the other side of a CME futures trade.
Polymarket operates under a different model — it's a decentralized prediction market built on the Polygon blockchain. Every trade is public by design. This enables wallet-tracking tools but creates different regulatory tradeoffs (no CFTC oversight, US access restrictions).
Kalshi
Polymarket
Kalshi has the best native alert UX for standard price-threshold notifications — no third-party tools needed.
Polymarket's public blockchain makes wallet-level tracking possible through tools like Arkham and Nansen — a capability no CFTC-regulated exchange can replicate.
No platform offers native news-to-market correlation alerts. That's a genuine ecosystem gap — you'll need to combine market price alerts with external news sources manually.
Alert overload is a real risk. Fewer, thesis-anchored alerts consistently outperform broad notification sweeps for active trading decisions.
Bias disclosure: Alert capability assessments are editorial.
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