Starting April 29, 2025, Gemini 1.5 Pro and Gemini 1.5 Flash models are not available in projects that have no prior usage of these models, including new projects. For details, see Model versions and lifecycle.
Agent Development Kit
(ADK) is an open-source framework that simplifies the process of building
sophisticated multi-agent systems while maintaining precise control over
agent behavior.
Vertex AI Agent Engine
is a set of services that enables developers to deploy, manage, and scale AI agents in production. Vertex AI Agent Engine offers services such as a fully-managed runtime, evaluation, Sessions, and Memory Bank.
Agent Tools are tools that you can equip your ADK agent to use, including:
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-09-04 UTC."],[],[],null,["# Vertex AI Agent Builder overview\n\nVertex AI Agent Builder is a suite of features for building and\ndeploying AI agents. It consists of the following components:\n\n- **Agent Garden** is a library where you can find and explore sample agents\n and tools that are designed to accelerate your development.\n\n [Go to Agent Garden](https://console.cloud.google.com/vertex-ai/agents/agent-garden)\n | **Preview:** Support for Agent Garden is in [preview](/products#product-launch-stages).\n- [**Agent Development Kit**](https://google.github.io/adk-docs/)\n (ADK) is an open-source framework that simplifies the process of building\n sophisticated multi-agent systems while maintaining precise control over\n agent behavior.\n\n | **Preview:** Support for ADK is in [preview](/products#product-launch-stages).\n- [**Vertex AI Agent Engine**](/vertex-ai/generative-ai/docs/agent-engine/overview)\n is a set of services that enables developers to deploy, manage, and scale AI agents in production. Vertex AI Agent Engine offers services such as a fully-managed runtime, evaluation, Sessions, and Memory Bank.\n\n- **Agent Tools** are tools that you can equip your ADK agent to use, including:\n\n - [Built-in tools](https://google.github.io/adk-docs/tools/built-in-tools/) such as [Grounding with Google Search](/vertex-ai/generative-ai/docs/multimodal/ground-with-google-search), [Vertex AI Search](/generative-ai-app-builder/docs/enterprise-search-introduction), and [Code Execution](/vertex-ai/generative-ai/docs/multimodal/code-execution)\n\n - [RAG Engine](/vertex-ai/generative-ai/docs/rag-quickstart#run-rag) for retrieval-augmented generation (RAG)\n\n - [Google Cloud tools](https://google.github.io/adk-docs/tools/google-cloud-tools/) to connect to:\n\n - Your APIs managed in [Apigee API Hub](/apigee/docs/apihub/what-is-api-hub)\n\n - 100+ enterprise applications through [Integration Connectors](/integration-connectors/docs/all-integration-connectors)\n\n - Custom integrations with [Application Integration](/application-integration/docs/overview)\n\n - [Model Context Protocol (MCP) tools](https://google.github.io/adk-docs/tools/mcp-tools/)\n\n - [Ecosystem tools](https://google.github.io/adk-docs/tools/third-party-tools/) such as LangChain tools, CrewAI tools, and [GenAI Toolbox for Databases](https://github.com/googleapis/genai-toolbox)\n\nThe following diagram shows the components of Vertex AI Agent Builder:\n\nTo learn more about AI agents in general, see:\n\n- our blog post on [multi-agent systems with Vertex AI](/blog/products/ai-machine-learning/build-and-manage-multi-system-agents-with-vertex-ai)\n\n- [What are AI Agents?](/discover/what-are-ai-agents)\n\n- [Vertex AI Agent Builder](/products/agent-builder)\n\nWorkflow for building and deploying agents\n------------------------------------------\n\n1. Discover agent samples and tools specific to your use cases in the [Agent Garden](https://console.cloud.google.com/vertex-ai/agents/agent-garden).\n\n2. Build and test your agent using the Agent Development Kit.\n\n3. Deploy your agent to Vertex AI Agent Engine.\n\nWhat's next\n-----------\n\n- [Agent Development Kit Quickstart](/vertex-ai/generative-ai/docs/agent-development-kit/quickstart)"]]
