This article announces gateway interceptors for Amazon Bedrock AgentCore Gateway, enabling fine-grained security and access control for AI agent tool access at enterprise scale.

• Gateway interceptors provide request/response interception points for custom authorization and data transformation
• Fine-grained access control filters tools based on JWT scopes, user identity, and execution context
• Dynamic tool filtering ensures agents only discover and invoke authorized tools without caching stale permissions
• Schema translation and data protection capabilities redact PII/SPI before downstream API calls
• Multi-tenant isolation supported through tenant ID and user ID validation in interceptor logic
• Act-on-behalf approach recommended over impersonation for secure identity propagation across service hops
• No Auth gateway type allows open tool discovery while enforcing OAuth for actual tool invocation
• AgentCore Observability integration provides real-time monitoring of authorization decisions and performance metrics

Gateway interceptors enable enterprises to securely scale AI agent deployments with thousands of tools across multiple teams while maintaining strict access controls and compliance requirements.