New pattern submission - Strands Agent on Lambda with AgentCore Smithy Bedrock Target

[humem001]

Strands SDK agent on Lambda calls Bedrock Runtime via AgentCore Gateway using a Smithy model target, with Cognito JWT auth and IAM role signing. The outer agent (Claude Sonnet 4.6) discovers Bedrock Runtime operations as MCP tools via the Gateway's Smithy target, then calls the Converse tool to invoke an inner model (Claude Haiku 4.5). No API keys or Secrets Manager required — the Gateway signs requests using its IAM execution role.

#3221