MCP OAuth on AgentCore Gateway + Cognito via APIGW Façade
May 19, 2026 · 18 min read · MCP Model Context Protocol AWS Bedrock AgentCore AgentCore Gateway Amazon Cognito API Gateway SST OAuth 2.1 RFC 9728 RFC 8414 RFC 7591 PKCE Claude Code ·
Introduction Amazon Bedrock AgentCore Gateway is the most pragmatic way to host a Model Context Protocol server on AWS today. Declare your tools as OpenAPI or as Lambda targets, get a managed multi-target MCP endpoint, and inherit AWS-native authentication via a customJwtAuthorizer. For machine-to-machine traffic that …
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