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aws-samples/sample-strands-agent-with-agentcore

Strands Agent Chatbot with Amazon Bedrock AgentCore

An end-to-end reference architecture for building agentic workflows using
Strands Agents and Amazon Bedrock AgentCore.

This repository demonstrates how to design and deploy a multi-agent chatbot that combines tool execution, memory, browser automation, and agent-to-agent collaboration. It is intended as a realistic, extensible sample for teams exploring advanced agent architectures on AWS.


Demo

Short.mp4

Full demo (6 min)

Mobile App


Coding Agent

Financial Analysis

Browser Automation

Web Search

What this repository demonstrates

  • Multi-agent orchestration with Strands Agents
  • Integration with Amazon Bedrock AgentCore
  • Tool-enabled agents (search, finance, weather, browser, code interpreter)
  • Autonomous browser, documentation, and analysis workflows
  • Modular architecture adaptable to real customer use cases
  • Infrastructure-as-Code (CDK) for repeatable deployment

If you are building agentic AI applications on AWS and want a concrete, end-to-end example, this repository is designed to be read, run, and extended.

Quick links:
Architecture · Key Features · Quick Start


Architecture Overview

This sample combines Strands Agent orchestration with Amazon Bedrock AgentCore services:

Component Role
Strands Agents Multi-turn reasoning and tool orchestration
AgentCore Runtime Managed, containerized agent execution
AgentCore Memory Persistent conversation state and summarization
AgentCore Gateway MCP-based tool integration with SigV4 authentication
AgentCore Code Interpreter Secure Python execution for analysis and document generation
AgentCore Browser Headless browser automation with live view
AgentCore Identity End-user authentication and 3LO OAuth delegation
AgentCore Observability Trace collection and agent execution monitoring
Amazon Nova Act Visual reasoning model for browser automation

Architecture Overview


Key Features

  • Strands-based agent orchestration
  • Amazon Bedrock AgentCore Runtime, Gateway, and Memory
  • MCP Gateway tools (Google, Wikipedia, ArXiv, Yahoo Finance, Tavily, Open-Meteo)
  • Agent-to-Agent (A2A) collaboration — including remote Claude Agent SDK (Claude Code) for agentic coding tasks
  • Built-in Code Interpreter for charts and documents
  • Multimodal input and output (vision, charts, documents, screenshots)
  • Real-time voice interaction with Amazon Nova Sonic 2

Skill System (Progressive Disclosure)

Tools are organized into skills — grouped units with SKILL.md instructions that the agent loads on demand. Instead of injecting all tool documentation into every prompt, the agent activates only the skills it needs:

  1. L1 Catalog — Skill names and one-line descriptions (always in system prompt)
  2. L2 Instructions — Full SKILL.md loaded via skill_dispatcher when activated
  3. L3 Execution — Tool calls via skill_executor

This keeps prompt size small while giving the agent access to detailed instructions when needed.

Design notes:

skills/
├── visual-design/          # Charts, posters, infographics (Code Interpreter)
├── code-interpreter/       # General code execution
├── browser-automation/     # Nova Act browser tools
├── word-documents/         # Word document generation
├── excel-spreadsheets/     # Excel spreadsheet generation
├── powerpoint-presentations/  # PowerPoint generation
├── gmail/                  # Gmail read/search/delete (3LO OAuth)
├── google-calendar/        # Calendar events (3LO OAuth)
├── notion/                 # Notion pages and databases (3LO OAuth)
├── github/                 # GitHub repos, issues, PRs, code (3LO OAuth)
└── ...                     # 20+ skills (web search, finance, maps, weather, and more)

Multi-Protocol Tool Architecture

Tool Category Protocol Examples Authentication
Local Tools Direct Python Web Search, URL Fetcher, Visualization None
Built-in Tools AWS SDK / WebSocket Code Interpreter, Browser (Nova Act) IAM
Gateway Tools MCP Google Search, Maps, Wikipedia, ArXiv, Finance SigV4
Private API Tools MCP (3LO OAuth) Gmail, Google Calendar, Notion, GitHub OAuth 2.0
A2A Tools A2A Research Agent, Browser-Use Agent SigV4

Total: 100+ tools across 20 tool groups See docs/guides/TOOLS.md for full details.


Voice Mode

Real-time voice interaction using Amazon Nova Sonic 2, Strands BidiAgent, and AgentCore Runtime WebSocket.

  • Seamless switching between voice and text within a single session
  • Shared conversation history across both modes
  • Full tool execution support during voice conversations

Memory Architecture and Long-Context Management

The system uses AgentCore Memory with:

  • Short-term session memory
  • Long-term summarized memory

Long conversations are compacted using a context summarization strategy to retain key information while controlling token growth.

Design notes:


Token Optimization via Prompt Caching

Prompt caching reduces input token usage by reusing system prompts, stable instruction blocks, and repeated conversation context across agent loop iterations.

This project originally implemented caching via custom Strands hooks. The approach has since been upstreamed into the Strands SDK as a built-in feature (strands-agents/sdk-python#1438):

from strands.models import BedrockModel, CacheConfig

model = BedrockModel(
    model_id="us.anthropic.claude-sonnet-4-6-v1",
    cache_config=CacheConfig(strategy="auto")
)

Design notes:


Multi-Agent Architecture

Agent-to-Agent communication is handled via the A2A protocol, allowing the supervisor agent to delegate tasks to specialized worker agents such as a deep research agent. Multiple agents collaborating in sequence — each handling its own role — are coordinated using the Swarm pattern.

This architecture also includes a Claude Agent SDK (Claude Code) instance deployed as a remote A2A agent on AgentCore Runtime. The supervisor delegates agentic coding tasks — multi-file implementation, refactoring, test suites — to this agent over A2A, with an S3-backed workspace that persists files across sessions.

Design notes:


Use Cases

  • Financial research agents
  • Technical research assistants using multi-agent patterns
  • Autonomous web automation agents
  • Memory-backed conversational assistants
  • Hybrid research workflows using MCP, A2A, and AWS SDK tools

Quick Start

Prerequisites

  • AWS account with Bedrock access
  • AWS CLI configured
  • Docker installed
  • Node.js 18+ and Python 3.13+

Local Development

git clone https://github.com/aws-samples/sample-strands-agent-with-agentcore.git
cd sample-strands-agent-with-agentcore

cd chatbot-app
./setup.sh

cd ../agent-blueprint
cp .env.example .env
# configure credentials

cd ../chatbot-app
./start.sh

Frontend will be available at http://localhost:3000.


Cloud Deployment

The interactive deployment script supports: 1. AgentCore Runtime 2. Frontend + BFF 3. MCP Gateway tools 4. A2A runtimes 5. Full stack deployment

cd agent-blueprint
./deploy.sh

Project Structure

sample-strands-agent-chatbot/
├── chatbot-app/
│   ├── frontend/
│   └── agentcore/
└── agent-blueprint/
    ├── chatbot-deployment/
    ├── agentcore-gateway-stack/
    ├── agentcore-runtime-stack/
    └── agentcore-runtime-a2a-stack/

Documentation

  • DEPLOYMENT.md
  • docs/guides/TROUBLESHOOTING.md

License

MIT License. See LICENSE for details.

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