Fireworks API key.
Automatically read from env variable FIREWORKS_API_KEY if not provided.
fireworks_api_key: SecretStr = Field(
alias='api_key',
default_factory=(secret_from_env('FIREWORKS_API_KEY', error_message='You must specify an api key. You can pass it an argument as `api_key=...` or set the environment variable `FIREWORKS_API_KEY`.'))
)