Skip to main content
Webhooks are billed per delivered event. You’re only charged when an event matching your subscription is successfully delivered to your endpoint.

​
Per-Event Rates

Each event type has its own rate per delivery:
Spike, milestone, and whale events cost 0.2 credits because they require heavier computation upstream. Exit markers and holder metrics cost 0.025 credits. All other events cost 0.1 credits.

​
Integer Rounding

Credits are an integer-based unit, so every charge is rounded up to the nearest whole credit. For example, if a billing period accumulates 4.3 credits of webhook usage, you’ll be charged 5 credits. This means very small amounts of usage still cost at least 1 credit. For accurate cost modelling, aggregate deliveries over longer windows rather than single events.

​
Subscription Caps

Each plan has a cap on how many webhook subscriptions you can create across your organisation: If you need higher limits, reach out to us at support@struct.to.

​
Example Calculations

A webhook subscribed to trader_whale_trade filtered to 50 wallets, receiving an average of 200 deliveries/day:
A webhook subscribed to price_spike filtered to 10 condition IDs, averaging 80 deliveries/day:
A webhook subscribed to market_created with no filters, averaging 15 new markets/day:

​
Reducing Costs

  • Use filters. Every event type supports filters that narrow which deliveries reach your endpoint. A trader_whale_trade webhook filtered to specific wallets is far cheaper than one with no filters.
  • Pick cheaper event types where possible. If you only need to know that a trader entered a market, trader_new_market at 0.1 credits is half the cost of trader_whale_trade at 0.2.
  • Scope each subscription tightly. Each webhook targets a single event with its own filters. Point each subscription at the narrowest event and filter set that meets your need rather than a broad event you then discard deliveries from.
  • Pause inactive webhooks. If you temporarily don’t need a subscription, pause it via the API rather than letting unused deliveries accumulate.
Last modified on June 16, 2026