Provider identifier
Model to use (e.g., 'claude-sonnet-4-6', 'gpt-4o')
OptionalapiAPI key (falls back to environment variable)
OptionalbaseBase URL for OpenAI-compatible gateways. Required when
providerId === 'custom-openai', ignored otherwise. Falls back to
the NEXUS_CUSTOM_API_BASE_URL environment variable.
OptionaltimeoutRequest timeout in milliseconds
OptionalmaxMaximum retries on transient failures
Configuration for creating an AI SDK adapter.