SHARKRULE / GUIDES

Polymarket alerts: price triggers without the noise

Polymarket alerts notify you when a market condition changes. A useful alert says which outcome changed, which price was observed and when the observation was made. Receiving an alert does not authorize an order or guarantee that the quoted price is still available.

Reviewed 12 September 2026

Start with the decision the alert should support

Price-threshold alerts help you revisit a watched market. Time alerts remind you to inspect an approaching deadline. Wallet-activity alerts tell you that a public address acted, not why it acted or whether copying it is sensible. Liquidity alerts can draw attention to a thinning order book. Each has a different source and a different failure mode.

Use a short watchlist of markets with a reason to review them. An alert for every price update quickly becomes background noise. A notification should let you inspect the original market rules and current book before deciding what to do.

Last trade, midpoint and executable price

Imagine a YES outcome with a best bid of 0.42 and best ask of 0.48. The midpoint is 0.45, but it is not an offer to buy or sell at that price. A previous trade at 0.44 may already be stale. If you intend to assess a possible purchase, the current ask and available size are more relevant than an unlabeled probability display.

Keep units explicit. A move from 40% to 45% is five percentage points, or a 12.5% increase relative to the initial value. An alert configured as a five-percent move may mean something different from what you intended. These numbers illustrate interpretation, not a trading signal.

Write an alert specification

A good message might report the old and new values, available size, observation time, alert identifier and a link to the market. Notification time and data time should remain separate so delayed delivery is visible.

  • Identity: exact market, outcome and source link, not only a shortened title.
  • Measurement: best ask, best bid, last trade, volume or time remaining; name it in the message.
  • Trigger: for this hypothetical example, ask crosses below 0.45 from above, rather than merely remains below it.
  • Freshness: include the data timestamp and reject observations older than the limit you choose.
  • Reset: re-arm only after ask rises above 0.47; add a cooldown to avoid repeated messages near the boundary.
  • Expiry: retire the alert at the chosen deadline and review it if market rules change.

Handle silence as well as repeated messages

No alert could mean the condition never occurred, the feed disconnected, or delivery failed. Track a separate feed-health status. After a reconnect, establish a fresh snapshot before comparing values; a gap in observations is not a continuous price path.

Give duplicate events stable identifiers and suppress repeated delivery for the same crossing. Decide whether an alert that arrives after its expiry should be discarded. During manual review, fetch the current market again: the original notification is a historical observation.

From monitoring to authorized automation

An alert workflow can be designed without order-signing authority. Adding automatic execution is a separate change: specify price, size, permissions, open-order handling and a stopping rule. A Telegram message, email or webhook is only a delivery mechanism, not a security model.

SharkRule centers on user-defined market monitoring and automation rules. This guide does not claim that Telegram, email market alerts or webhook integrations are currently shipped. The existing early-access waitlist is the place to register interest; its confirmation email is not a market alert.

Custody, permissions and eligibility

Non-custodial means funds remain in a user-controlled wallet; it does not remove trading permissions, smart-contract risk or the possibility of loss. SharkRule is independent from Polymarket, with no affiliation or endorsement implied. This is software education, not financial or investment advice. Trading eligibility follows current Polymarket geographic restrictions.

Check current geographic restrictions

Frequently asked questions

Can I monitor markets without automatically trading?

Yes, observation and order execution are separate workflows. Confirm that the tool you choose does not request unnecessary trading permissions.

Why did my alert arrive after the price moved?

Data collection, processing and delivery each add delay. Inspect the observation timestamp and current order book before acting.

Does a whale alert identify a good trade?

No. A public wallet's trade may be one part of a larger position, a hedge or activity whose purpose is not visible.

Sources and further reading