Outbound HTTP delivery from a Marketo Smart Campaign "Call Webhook"
flow step to a subscriber URL. Method is GET or POST, configured per
webhook. The body is an author-defined template; this channel models
the POST/JSON case. For GET deliveries there is no body and tokens
are resolved into the URL itself.
HTTP request emitted by a Smart Campaign Call Webhook flow step.
Content-Type: application/json
About AsyncAPI
The AsyncAPI specification describes event-driven APIs the way OpenAPI describes request/response APIs. A channel is the named pipe — a webhook URL, a Kafka topic, a WebSocket route, an MQTT subject — that producers and consumers publish or subscribe to. Each channel carries one or more messages with structured payloads, and an operation declares whether a given party sends or receives on that channel.
Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.
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