Polymarket: Trade on Market

Trigger Markets

Triggers whenever a trade happens on a specific Polymarket market. Useful for monitoring activity and reacting to trading in real time.

At a Glance

Field	Value
Trigger ID	polymarket-market-trade
Category	Markets
Tags	polymarket, prediction-market, trading, market-monitoring, websocket, real-time

Trigger Configuration

Field	Type	Required	Description
marketId	string	Yes	The Polymarket market identifier. Accepts a condition ID (starts with 0x) or a market slug. To find the slug: open the market on polymarket.com and copy the last part of the URL after /event/ (e.g. polymarket.com/event/will-bitcoin-hit-100k → use 'will-bitcoin-hit-100k').
outcome	string	No	Optional: filter by outcome. Only trades for this outcome will trigger.
minSize	number	No	Minimum trade size (in shares) to trigger on. Only trades >= this size will trigger.
side	string	No	Filter by trade side. If not specified, triggers on both BUY and SELL trades.

Trigger Result

Field	Type	Required	Description
triggeredAt	string	Yes	Timestamp when the trade was detected (UTC, RFC3339 format)
market	object	Yes	Market information
trade	object	Yes	Details of the detected trade

Workflow Root Example

json
{  "nodes": {    "root": {      "type": "polymarket-market-trade",      "payload": {        "marketId": "will-bitcoin-hit-100k"      },      "children": [        "log_event"      ]    },    "log_event": {      "type": "log",      "payload": {        "message": "Triggered at {{$trigger.triggeredAt}}"      },      "children": []    }  }}

Downstream nodes can use {{$trigger.triggeredAt}} and any result fields listed above. Event triggers usually expose the raw source payload under a field such as event, body, trade, or raw.