AWS Agent Harness (Bedrock AgentCore)

Take an AI agent from an empty folder - or from code you already have - to a live, serverless endpoint on AWS. Every command and import below is verified against official docs (sources at the bottom).

Companion skill: aws-strands is the agent framework (the "brain" - how to write the agent). This skill is the harness: how to run and deploy that agent on AWS. Write with Strands, ship with AgentCore.

What "harness" means (read this first)

A language model, alone, only turns text into text. It cannot call an API, remember yesterday, run code, or browse the web. The harness is the scaffolding around the model that makes it act:

• Agent loop - call the model, read the tool it wants, run that tool, feed the result back, repeat until done. The model decides; the harness executes and loops.
• Tool execution, memory, identity, guardrails, sandboxing, observability - everything that makes it useful and production-safe.

Amazon Bedrock AgentCore is AWS's managed set of these harness pieces. You bring the agent (built with Strands, LangGraph, or anything); AgentCore hosts, secures, and scales it. The components, composable and framework-agnostic: