@Marvin Is there a client api for getting the flow/deployment default parameters?

You can provide default parameter values in the

deployment.yaml

configuration when working with Prefect deployments. If you wish to retrieve or modify these parameters programmatically via a client API, the documentation does not directly reference such an API endpoint to do so. Typically, such changes are recommended to be done from the CLI or Prefect UI for convenience. For more detailed information, please refer to the Prefect documentation on deployments: Parameters in Deployments