Amazon Bedrock Agents Classic availability change: Amazon Bedrock Agents (launched November 2023) is now Amazon Bedrock Agents Classic and will no longer be open to new customers starting on July 30, 2026. If you would like to use Bedrock Agents Classic, s

Amazon Bedrock Agents Classic maintenance mode

Amazon Bedrock Agents (launched November 2023) is now Amazon Bedrock Agents Classic and will no longer be open to new customers starting on July 30, 2026. For capabilities similar to Amazon Bedrock Agents Classic, explore Amazon Bedrock AgentCore. Amazon Bedrock continues to be available, but the Agents Classic service will be in maintenance mode.

This guide provides information about the maintenance mode migration options for Amazon Bedrock Agents Classic customers.

Note

Amazon Bedrock continues to be fully supported. Only the Amazon Bedrock Agents Classic service is no longer open to new customers as of July 30, 2026. Your existing Amazon Bedrock models, Knowledge Bases, and Guardrails are not affected.

Migration plan

We recommend that you migrate your Amazon Bedrock Agents Classic workloads to Amazon Bedrock AgentCore. AgentCore is the platform to build, connect, and optimize AI agents. The managed harness in AgentCore provides a config-based starting point where developers can declare the agent's model, tools, and instructions. AgentCore handles the environment, compute, memory, identity, and observability.

What to do

• Evaluate AgentCore for new agent development and future migrations.
• Review the migration procedure and prerequisites.
• Use the AgentCore CLI to import existing Bedrock Agents Classic configurations.

Migration procedure

Prerequisites to migrate to AgentCore harness:

• Node.js 20+ and AgentCore CLI, or Python 3.10+ with boto3
• AWS credentials in a preview region (us-east-1, us-west-2, eu-central-1, ap-southeast-2)
• IAM execution role with required permissions

1. Create and configure agentcore create --name my-research-agent
2. Configure model and system prompt agentcore add harness --name my-research-agent --model-id us.anthropic.claude-sonnet-4-6-20250514-v1:0 --system-prompt "You are a research assistant." --tools agentcore-browser,code-interpreter
3. Deploy and invoke agentcore deploy agentcore invoke --harness my-research-agent --session-id "$(uuidgen)" "Research tropical vacation options under $3k"

Frequently asked questions

Impact

• Will my existing agents stop working? No. Existing agents continue to function normally.
• What error will I see if my account is not allowlisted? Error Code: AccessDeniedException (HTTP 403) Message: "Bedrock Agents is in Maintenance Mode. New agent creation is not available for accounts without prior service usage."
• Do I need to take action? Not immediately. Your existing workloads are unaffected. However, we recommend evaluating AgentCore for new agent development and future migrations.

Source: AWS release notes

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