Bedrock Guardrail Firewall

Bedrock Guardrail Firewall is an open-source, privacy-first policy enforcement layer for generative AI. It redacts sensitive data locally, detects prompt attacks, checks grounding and authorization, and can optionally call Amazon Bedrock Guardrails or Microsoft Presidio. Offline by default, fail-closed in production, and backed by metadata-only, tamper-evident audit trails.