Single subscriber endpoint that receives every Dropbox Sign API-app
callback. Routes events for signature requests created with the API
app's `client_id`. Body shape is identical to account callbacks; the
`event.event_metadata.reported_for_app_id` field is populated.
API-app-scoped event delivered to the app callback URL. The
`event.event_type` discriminator carries the specific event name and
`event.event_metadata.reported_for_app_id` carries the API app's
client
Content-Type: multipart/form-data
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.
Get an API key
Free tier, no form to fill in. Signing in shares your email address with us — we
store it to create your key and to recognise you if you sign in with another
provider. See our Privacy Policy and
Terms.