Anthropic
Paste an sk-ant-… key. Used for all Claude models when this provider is selected.
AWS Bedrock
Paste a Bedrock bearer token (AWS_BEARER_TOKEN_BEDROCK). Used when Bedrock is the selected provider. Lets billing flow through your AWS account.
System Bedrock (fallback)
If you do not paste a key, your agency falls back to the System Bedrock token managed by SAA. Usage deducts from your credit ledger based on token usage. More.
Rotation
Replace the value and save. The old key becomes inactive immediately. In-flight runs that already authenticated finish with the old key; new runs use the new one.