Manifest [[message]] Section

Open Beta Documentation Amazon offers this technical documentation as part of a pre-release, open beta. The features described might change as Amazon receives feedback and iterates on the features. For the most current feature information, see the Release Notes.

The [[message]] section defines the URIs that the application package introduces to the rest of the system.

[[message]]
# message details discussed below.

The section may be skipped when the message URI addresses a private lifecycle component in the application package. Skipping is only allowed for URIs using pkg:// scheme because they directly contain the lifecycle component's name. In other words, every lifecycle component can be launched by prefixing the component id with pkg://. It is equivalent to defining a [[message]] as follows. Every URI defined in a [[message]] must be included in one and only one module.

[[message]]
uri = "pkg://com.amazon.samplepkg.main"
sender-privileges = ["self"]
receiver-privileges = ["self"]

Fields

uri (string, required): URI that can be used with Vega Messaging APIs for communication.
```
  uri = "pkg://com.amazon.samplepkg.main"
  uri = "samplepkg://main"
```
sender-privileges (array of strings, required): If multiple privileges are specified then the sender or receiver must have all privileges in the list to assume the role. In addition to the specific privilege ids, use * or self if appropriate. * allows anyone to use (send / receive) the message. self allows only the application package the module is part of to use the message.
```
  sender-privileges = ["self"]
  sender-privileges = ["*"]
```

Last updated: Sep 30, 2025