OptionalauthAuthentication mode. Exactly one variant may be set. (-- Wrapped in a oneof so future auth modes (e.g. a UC service credential) can be added as additional variants without a breaking change. --)
Anthropic API key. Required on Create. Sent as the x-api-key header on
outbound requests. Supplied as inline plaintext via
ProviderSecret.plaintext.
Direct form of Anthropic provider config.