AsyncAPI channel · Amazon API Gateway · Amazon API Gateway WebSocket API

$default

The $default route is invoked when no other route matches the incoming message. This serves as a fallback handler for messages that do not match any custom route selection expression. It is also used when the route selection expression evaluates to a value that does not match any defined route key.

Open source AsyncAPI → All Amazon API Gateway channels Amazon API Gateway provider profile
Provider: Amazon API Gateway AsyncAPI: v3.0.0 Spec: Amazon API Gateway WebSocket API Operations: 1 Messages: 1

Channel address

$default

Operations

receive
onDefaultMessage
Receives messages that do not match any custom route key. Useful as a catch-all handler or for APIs that use a single route for all messages.

Messages

DefaultMessage
A message received on the $default route when no custom route matches the incoming message content.
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.

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