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description
The default/primary Bedrock auth path is AWS SigV4 request signing using standard AWS credential resolution (~/.aws/credentials, AWS_ACCESS_KEY_ID/AWS_SECRET_ACCESS_KEY env vars, or temporary session-token credentials) — distinct from the direct Anthropic API's single ANTHROPIC_API_KEY bearer-header auth.
provenance
created 2026-07-02 06:03:26 · JSON