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Triggers

In step 3, click Add Trigger and fill:
  • Label
  • Description
  • Type: Webhook or Polling

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Trigger editors

Depending on trigger type, you will see tabs such as:
  • Parameters
  • Subscribe (JS)
  • Unsubscribe (JS)
  • Handler (JS)
  • Poller
  • Sample Outputs (json)
Use Sample Outputs (json) to define the payload shape passed to later steps.

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Webhook trigger pattern

  • Subscribe (JS): register remote webhook
  • Unsubscribe (JS): clean up registration
  • Handler (JS): normalize incoming payload before output

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Polling trigger pattern

Polling should return data only when a new item exists. 
const category = parameters.category || 'all';
const key = `latestMarketId_${category}`;

// Example: fetch latest items from API
const res = await fetch('https://example.com/markets');
const markets = await res.json();
if (!markets?.length) return false;

const latest = String(markets[0].id);
const previous = await getValue(key);
await setValue(key, latest);

if (latest !== previous && previous) {
  return markets[0];
}

return false;

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Validate in Preview

  • Use Listen for webhook testing
  • Provide parameter values (for example category)
  • Check Outputs and Logs before publishing