A company uses AWS Lambda functions to build an AI agent solution. A GenAI developer must set up a Model Context Protocol (MCP) server that accesses user information. The GenAI developer must also…

Question

Options

• AUse a Lambda function to host the MCP server. Grant the AI agent Lambda functions permission
• BUse a Lambda function to host the MCP server. Grant the AI agent Lambda functions permission
• CUse a Lambda function to host the MCP server. Create an Amazon API Gateway HTTP API that
• DUse a Lambda layer to host the MCP server. Add the Lambda layer to the AI agent Lambda

• A
  12% (3)
• B
  4% (1)
• C
  80% (20)
• D
  4% (1)

Explanation

Hosting the MCP server in a Lambda function and fronting it with Amazon API Gateway HTTP API is the correct architecture. API Gateway provides built-in authorization mechanisms - Lambda authorizers, IAM authentication, JWT/Cognito authorizers - so you can enforce that only authenticated, authorized callers reach the MCP server. The AI agent Lambda functions call the MCP server through the API Gateway endpoint, and access control is enforced at the Gateway layer. Options A and B (based on the partial text) appear to rely on Lambda resource-based policies for inter-Lambda invocation, which do not easily restrict access to specific users or external callers. Option D (Lambda layer) is incorrect because Lambda layers are a packaging mechanism for shared code libraries, not a way to host a server; a layer added to the agent function cannot expose an independent MCP endpoint.

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