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Event: trader_new_market
Cost: 0.1 credits per delivery
The trader_new_market event fires the first time a trader trades in a specific market, delivering once per trader-and-market pair. The full payload schema is in the auto-generated Trader New Market callback reference; this page documents the filters and matching behavior.

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When to use this

  • Track when a trader expands into a market they have never touched before.
  • Spot smart money rotating into a fresh event or condition for the first time.
  • Build per-market entry alerts without re-firing on subsequent trades in the same market.

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Subscription filters

Add these to the filters object when you create the subscription.
FilterTypeDescription
wallet_addressesstring[]Restrict to specific trader wallet addresses (max 500).
condition_idsstring[]Restrict to specific markets by condition ID (max 500).
event_slugsstring[]Restrict to specific events by slug (max 500).
min_usd_valuenumberMinimum USD size of the trade.
min_probabilitynumberMinimum outcome probability, 0.0–1.0.
max_probabilitynumberMaximum outcome probability, 0.0–1.0.
exclude_shortterm_marketsbooleanExclude short-term Up/Down markets.

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Example

{
  "url": "https://your-server.com/webhooks",
  "event": "trader_new_market",
  "filters": {
    "wallet_addresses": ["0x1f98431c8ad98523631ae4a59f267346ea31f984"],
    "min_usd_value": 50
  }
}
Last modified on June 3, 2026