# HeaderProvider

## class nominal.core.HeaderProvider

Bases: [`ABC`](https://docs.python.org/3/library/abc.html#abc.ABC "(in Python v3.15)")

A provider of additional headers for SDK requests.

### abstractmethod headers()

Return type:
:   [*Mapping*](https://docs.python.org/3/library/typing.html#typing.Mapping "(in Python v3.15)")[[*str*](https://docs.python.org/3/builtins/stdtypes.html#str "(in Python v3.15)"), [*str*](https://docs.python.org/3/builtins/stdtypes.html#str "(in Python v3.15)")]