OptionalbaseOptionalbudgetOptionalbudgetthe node's management API, such as https://node.example.edu
OptionalfetchOptionalheadersextra headers on every request, for a caller that has to identify itself
OptionalnowOptionalretrieshow many times a retryable failure is retried before it is raised
Optionalsleepa bst_ token; the tenant it may reach rides on the token and is never a parameter
groups this node's spending with another plane's, for a caller holding one credential