🔶 Implement custom authentication for tools integration using request Lambda interceptor in AgentCore Gateway

AgentCore Gateway supports OAuth 2.0, IAM, and API keys natively, but a request Lambda interceptor enables legacy Basic Auth integration. The interceptor validates the inbound JWT, retrieves system credentials from Secrets Manager, and constructs the Basic Auth header before forwarding to the downstream tool.

https://aws.amazon.com/ru/blogs/security/implement-custom-authentication-for-tools-integration-using-request-lambda-interceptor-in-agentcore-gateway

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