Its not exactly what youre atter but smithy has waiters https://awslabs.github.io/smithy/1.0/spec/waiters.html https://awslabs.github.io/smithy/1.0/spec/waiters

Its not exactly what youre atter but smithy has waiters https://awslabs.github.io/smithy/1.0/spec/waiters.html https://awslabs.github.io/smithy/1.0/spec/waiters.html > Waiters are a client-side abstraction used to poll a resource until a desired state is reached, or until it is determined that the resource will never enter into the desired state. I havent seen them put behind an async interface but it seems like a good match for a lot of StartWork, DescribeWork(token) patterns.