What’s Changed

The Amazon Bedrock AgentCore harness is now generally available, greatly simplifying the productionization of agent development. Previously, building the sandbox environment, memory management, authentication, and observability required for agent implementation took time. With two API calls (CreateHarness and InvokeHarness), it is now possible to build a production environment instantly. Using the CLI for a quick walkthrough or console operations, agents can be launched in minutes.

(Reference: Amazon Bedrock AgentCore harness is now generally available)

Detailed Mechanism

AgentCore harness provides the basic components necessary for agent execution (Runtime, Memory, Gateway, Browser, Identity, Observability) as managed abstractions. These primitives cover the entire lifecycle of the agent. For example, memory persists user and conversation states, and Gateway enables communication with custom tools or MCP (Model-Cloud Provider). Observability is streamed to CloudWatch in real-time, and trace information collection is automated.

(Reference: Amazon Bedrock AgentCore harness is now generally available)

Migration Procedure

To try AgentCore harness, you can start with the following steps:

  1. Initial setup with CLI: Define the agent using the aws bedrock create-harness command.
  2. Console operation: Select “Create Harness” in the AgentCore section of the AWS console and specify the model and tools.
  3. Execution: Run the agent using the aws bedrock invoke-harness command.

This process eliminates the need for building custom containers or writing orchestration code, reducing the production environment build time to minutes.

(Reference: Amazon Bedrock AgentCore harness is now generally available)

Summary

  • Use aws bedrock create-harness and aws bedrock invoke-harness to build a production agent in minutes
  • Start agent setup using GUI operations in the AgentCore section of the AWS console
  • Utilize managed sandbox environments and memory management, simplifying integration with custom tools
  • Automatically stream observability to CloudWatch and confirm trace information in real-time

(Reference: Amazon Bedrock AgentCore harness is now generally available)