amazon-bedrock-agentcore-samples/03-integrations/agentic-frameworks/java_adk

Java Google ADK Agent example for Amazon Bedrock AgentCore Runtime

This project implements the HTTP protocol contract for Amazon Bedrock AgentCore Runtime using Java Spring Boot. It provides a foundation for integrating Java Google's Agent Development Kit (ADK) with Amazon Bedrock AgentCore Runtime.

Information	Details
Agent type	Synchronous
Agentic Framework	Java Google ADK
LLM model	Gemini 2.0 Flash
Components	AgentCore Runtime
Example complexity	Easy

Overview

Amazon Bedrock AgentCore Runtime provides a secure, serverless hosting environment for deploying AI agents. This implementation creates REST API endpoints that comply with the AgentCore HTTP protocol contract.

Prerequisites

• Java 17 or higher, download
• Maven 3.6+, download
• AWS account: You need an active AWS account with appropriate permissions
  • Create an AWS account
  • AWS Management Console access
• AWS CLI: Install and configure AWS CLI with your credentials
  • Install AWS CLI
  • Configure AWS CLI
• Google AI API key (for the Gemini model), docs

Project Structure

java_adk/
├── src/
│   ├── main/
│   │   ├── java/com/agentswithek/GoogleADKAgentCore/
│   │   │   ├── controllers/
│   │   │   │   └── AgentCoreRuntimeController.java    # REST endpoints
│   │   │   ├── entities/
│   │   │   │   ├── InvocationRequest.java             # Request DTO
│   │   │   │   ├── InvocationResponse.java            # Response DTO
│   │   │   │   └── PingResponse.java                  # Health check DTO
│   │   │   └── GoogleAdkAgentCoreApplication.java     # Main application
│   │   └── resources/
│   │       └── application.properties                  # Configuration
│   └── test/
├── Dockerfile                                          # ARM64 Docker build
├── pom.xml                                             # Maven dependencies
└── README.md                                           # This file

Local Development & Testing

git clone https://github.com/awslabs/amazon-bedrock-agentcore-samples.git
cd 03-integrations/agentic-frameworks/java_adk

Google API Key

Important

Make sure to replace <ValidAPIKey> with valid API key from Google.

export GOOGLE_API_KEY="<ValidAPIKey>"

Build and Run

# Run with Maven
mvn spring-boot:run

The application will start on http://localhost:8080

Test the Endpoints

Test /invocations:

curl -X POST http://localhost:8080/invocations \
  -H "Content-Type: application/json" \
  -H "X-Amzn-Bedrock-AgentCore-Runtime-Session-Id: gfmeoagmreaklgmrkleafremoigrmtesogmtrskhmtkrlshmt" \
  -d '{"prompt": "Hello, how are you?"}'

Test /ping:

curl http://localhost:8080/ping

Deploy to AgentCore Runtime Using AWS CloudFormation

Step 1: Deploy CloudFormation Stack

Important

Make sure to replace <ValidAPIKey> with valid API key from Google.

# Deploy the CloudFormation stack
aws cloudformation create-stack \
  --stack-name java-adk-agent \
  --template-body file://cloudformation/github-source.yaml \
  --capabilities CAPABILITY_IAM \
  --parameters \
    ParameterKey=AgentName,ParameterValue=adkjavaagent \
    ParameterKey=GoogleApiKey,ParameterValue=<ValidAPIKey>

# Wait for stack creation to complete
aws cloudformation wait stack-create-complete \
  --stack-name java-adk-agent

# Get stack outputs
aws cloudformation describe-stacks \
  --stack-name java-adk-agent \
  --query "Stacks[0].Outputs" \
  --output table

Step 2: Testing

Once your agent is deployed, you can test it using the integration tests.

Step 1: Get Agent Runtime ARN from SSM Parameter Store

# Export the ARN directly (replace 'adkjavaagent' with your agent name)
export AGENT_RUNTIME_ARN=$(aws ssm get-parameter \
  --name "/hostagent/agentcore/adkjavaagent/runtime-arn" \
  --query "Parameter.Value" \
  --output text )

# Verify it's set
echo $AGENT_RUNTIME_ARN

export AWS_REGION="us-west-2"

Step 2: Run Integration Tests

# Run all tests
mvn test -Dtest=AgentRuntimeInvokerTest

Cleanup

To delete all resources created by the CloudFormation stack:

# Delete the CloudFormation stack
aws cloudformation delete-stack \
  --stack-name java-adk-agent 

# Wait for stack deletion to complete
aws cloudformation wait stack-delete-complete \
  --stack-name java-adk-agent 

# Verify deletion
aws cloudformation describe-stacks \
  --stack-name java-adk-agent | grep -q "does not exist" && echo "Stack successfully deleted"