🚂 Building a Full-Stack App with Google Antigravity IDE

 The landscape of software development is undergoing a revolution, shifting from human-centric coding to Agent-First Development. At the forefront of this change is Google Antigravity IDE, an intelligent platform that empowers developers to delegate complex, multi-step tasks to autonomous AI agents. This post walks through a live demonstration of building a complete full-stack application—Angular Frontend, Spring Boot Middleware, and MySQL Backend—using simple, goal-oriented prompts within the Antigravity environment.

Please feel to refer the below article before moving for Google Antigravity IDE handson expereince.

The Agent-First Paradigm
Traditional IDEs focus on accelerating the manual act of coding. Antigravity, powered by models like Gemini 3 Pro, acts as a mission control for software development. Agents are given high-level objectives and autonomously handle the planning, execution, coding, terminal commands, debugging, and verification across the entire stack. This elevates the developer from coder to architect and supervisor.

Key Features of Antigravity:

Autonomous Planning & Execution: Agents create detailed task lists and implementation plans that can be reviewed and approved.

Multi-Surface Control: Agents operate directly within the editor, terminal, and even an integrated browser for end-to-end task completion and visual verification.

Artifacts for Trust: Instead of overwhelming log files, agents produce verifiable deliverables like screenshots, code diffs, and browser recordings for quick review.

 Project Setup: Angular, Spring Boot, and MySQL
Our goal is to create a basic authentication system (Login, Signup, Forgot Password) using a common enterprise stack.

The Stack:

Frontend: Angular (UI responsive)

Middleware: Spring Boot Microservice (REST APIs)

Backend: MySQL Database (Data Persistence)

Before starting, ensure you have the Google Antigravity IDE, JDK (for Spring Boot), and MySQL installed.

Step 1: Frontend Generation with a Single Prompt
We begin by instructing the Antigravity agent to scaffold the entire Angular frontend.

Prompt for Frontend:

Create an ui responsive angular application that provide the login functionality along with signup and reset-password. This ui will consume rest api expose by the url given below /api/auth/login, /api/auth/signup, /api/auth/reset-password

The agent will analyze this prompt, generate the necessary Angular components, routing, and services to interact with the specified REST API endpoints.

Step 2: Backend & Middleware Setup
Next, we prompt the agent to create the corresponding backend microservice.

Prompt for Backend:

After this create a springboot application that expose follwing rest api /api/auth/login, /api/auth/signup and /api/auth/reset-password to external application. This springboot application interact with mysql database to perform this operations.

The agent will set up the Spring Boot project, configure dependencies (JPA, MySQL Connector, Web), create controllers, services, and repository layers, and scaffold the REST endpoints as requested.

Step 3: Database Schema Creation
A crucial step in full-stack development is database provisioning. We can instruct the agent to generate the necessary SQL schema.

Initial Prompt for Schema:

create schema.sql that will create the required sql user and table in database.

If the generated file is initially empty or insufficient (as it often is in simple first attempts), the power of the agent comes in with modification commands.

Prompt for Schema Modification (Refinement):

modify the shema.sql with my sql code that create database with name siddhuai and alsocreate user with name root and password as password and grant all the privilages to this root user and als oreate a table name as user with field like id, username, password, email, and keep the id and primary key inside this database siddhuai

This demonstrates the iterative refinement capability of the agent, where natural language can be used to modify generated code directly.

 Execution and Debugging
Once the codebase is generated, the agent often provides the commands needed to run the application, visible directly in the workspace.

Running the Application
Middleware Start: C:\antigravity-workspace\backend>mvn spring-boot:run Right-click on the AuthApplication and click run is an even simpler, IDE-native way to execute this.

Frontend Setup & Start: C:\antigravity-workspace\frontend>npm install C:\antigravity-workspace\frontend>npm start

Autonomous Debugging
One of the most powerful features of Antigravity is its debugging capability. If an error occurs in the terminal during execution, you can simply select the error text and use the “Chat option.” The agent will analyze the stack trace, identify the root cause, propose a fix, and often ask for permission to execute the fix command itself.

 Use Cases and Verification
The final step is to verify the application functionality across common user journeys. The agent can monitor the browser and capture Artifacts to confirm success.

Use Case 1: Create a New User (Signup): Verifying that the Angular UI successfully sends a request to the Spring Boot endpoint, which in turn persists the new user record in the MySQL database.

Use Case 2: Login with Existing User: Verifying end-to-end authentication flow.

Use Case 3: Forgot Password: Verifying the UI and backend logic for initiating a password reset.

This full-stack build demonstrates how Google Antigravity shifts the developer’s role from writing boilerplate code to defining the architecture and supervising the agents. The future of development is truly agent-first.

The complete code for this workspace can be found on GitHub:

https://github.com/shdhumale/antigravity-workspace.git

In next example we will try modify the ui usig design.json file created by using some other sites.

Note:- Make sure to login to Google Antigravity using key created from google ai studio.

🚀 Experiencing Liftoff: Google Antigravity and the Dawn of Agent-First Development

 

Google Antigravity

The world of software development is undergoing a paradigm shift. Moving past simple autocomplete and in-line chat, Google has introduced Google Antigravity, an agent-first development platform that redefines the Integrated Development Environment (IDE) into a Mission Control for autonomous AI agents.  Powered by the latest Gemini 3 Pro model, Antigravity is designed to elevate the developer from a line-by-line coder to a high-level architect and orchestrator. 

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What is Google Antigravity? 

Google Antigravity is a standalone, cross-platform IDE (forked from the VS Code foundation) where AI agents are the central actors, not just assistants.  Unlike traditional AI coding tools, Antigravity’s agents are autonomous, capable of planning, executing, and verifying complex software engineering tasks with minimal human intervention. 

The platform’s core innovation is granting these agents synchronized control across three essential development surfaces:

1. The Code Editor: For writing, refactoring, and fixing code directly in your files. 
2. The Terminal: For installing dependencies, running build commands, and debugging tests. 
3. The Browser: For running the application, navigating user flows, and visually verifying the output (via an integrated Chrome extension). 

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What Antigravity Can Do (and Why it Matters) 

Antigravity transforms the development workflow by allowing developers to delegate end-to-end, multi-tool tasks. It’s not just a productivity boost; it’s a fundamental change in how software gets built.

Key Capabilities and Impact on Software Development:

• Autonomous Task Execution: You don’t just ask for code; you assign a mission.  For example: “Fix the layout bug on the mobile checkout page, run a local test, and ensure the change doesn’t break the desktop view.” The agent then takes over, editing files, running the server, driving the browser, and providing a verifiable result. It handles the minutiae, so you don’t have to.
• Asynchronous Parallelism: The Agent Manager (Mission Control) allows you to spawn multiple agents simultaneously.  You can have one agent refactoring a legacy module while another is generating a test suite for a new API, allowing you to focus on a third task in the editor. This dramatically increases a single developer’s throughput and allows teams to tackle more ambitious projects.
• Verifiable Artifacts: To build trust, the agent doesn’t just present a final code change. It generates Artifacts—tangible deliverables that document its work, such as:
  • Detailed Implementation Plans. 
  • Task lists and progress reports. 
  • Screenshots and Browser Recordings of the executed tests. 
  Developers review these clear checkpoints instead of dense tool-call logs. You can even leave Google Docs-style comments directly on an Artifact to redirect the agent without stopping its process, creating a continuous, efficient feedback loop. This transparency fosters confidence in the agent’s work.

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Who Can Use It and How it Helps Software Development 

Antigravity is designed for virtually anyone involved in software creation, but its “architect and reviewer” paradigm is particularly transformative for:

User Type	Core Benefit in Antigravity	Why it’s a Game-Changer
Professional Developers	Shifts focus from boilerplate coding to high-level architecture and strategic design. They delegate maintenance tasks, refactoring, and integration testing to agents, boosting overall velocity.	Imagine reclaiming hours from repetitive tasks, freeing you to innovate and solve truly challenging problems.
Junior Developers/Learners	Provides a high-quality, verified baseline for tasks. They can learn by reviewing the agent’s well-structured implementation plans and tested artifacts, raising the learning bar.	Accelerates skill development by showcasing best practices in action, turning learning into an interactive, guided experience.
Hobbyists/Startups	Accelerates the idea-to-reality cycle, enabling single individuals to scaffold entire full-stack applications, generate UIs from prompts, and implement complex features rapidly and verifiably.	Launch your MVP faster than ever before. Antigravity acts as your force multiplier, making ambitious projects achievable with limited resources.

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Installation Options and The Open Agent Manager 

Installation and Setup

Google Antigravity is available as a free public preview for individuals on macOS, Windows, and Linux.  The installation process offers a streamlined user experience, built on the familiar VS Code foundation, making it easy to get started.

Installation Option	Description	Benefits
1. Fresh Installation (Default)	The recommended, clean-slate approach. Download the installer from the official site, sign in with your Google account, and follow the setup wizard. This creates a new, dedicated environment optimized for agent-first workflows.	Get the full, uncompromised Antigravity experience, perfectly tuned for agent orchestration.
2. With Existing VS Code Plugin Import	As Antigravity is forked from VS Code, the first-run wizard typically offers an option to import existing settings. This is useful for migrating your familiar keybindings, themes, and non-agent-specific extensions, allowing for a fast transition into the new IDE.	Leverage your existing VS Code setup while seamlessly stepping into the future of agent-first development.

The Open Agent Manager (Mission Control) 

The Agent Manager is the core of the Antigravity experience, acting as a Mission Control dashboard that centralizes all asynchronous agent work. It’s your nerve center for managing intelligent agents.

1. Workspace 

The Workspace functions similarly to the traditional concept of a project folder in VS Code. It is the local directory where your code resides. Within Antigravity, the Workspace is the context for an agent. When you start a new task in the Agent Manager, you associate it with a Workspace, ensuring the agent has all the correct local files, dependencies, and git history it needs to operate. It’s the agent’s world to operate in.

2. Playground 

The “Playground” refers to a temporary, isolated conversation or task thread within the Agent Manager. This is where you issue a high-level prompt (e.g., “Create a new REST API endpoint for user profile updates”) which spawns a dedicated agent instance. This agent then:

• Generates an Implementation Plan (Artifact). 
• Executes the necessary steps across the editor, terminal, and browser. 
• Produces verification Artifacts (screenshots, recordings). 

The Playground keeps the execution of this specific task isolated and observable, allowing for the multi-agent, asynchronous workflow. It’s your sandbox for innovation, where agents do the heavy lifting.

3. Merge to the Existing Files 

Once an agent in a Playground (or Task Thread) has completed its work and generated a set of code changes (a diff), the developer must review the generated Artifacts and the proposed changes.

The Merge functionality is the final step where the developer approves the agent’s work. The system will then automatically:

• Apply the agent’s code changes (file modifications, additions, deletions) to the files in the associated Workspace. 
• Optionally, the agent can be configured to generate a Pull Request (PR) summary and description, linking the verification artifacts to accelerate the human code review process. 

This process ensures that the developer maintains ultimate control, acting as a mandatory human-in-the-loop reviewer before any autonomous changes are permanently integrated into the codebase. Your oversight ensures quality and alignment with your vision.

Antigravity promises to be an indispensable tool for the next generation of software development, transforming the nature of coding from writing lines to orchestrating autonomous intelligence. It’s not just an IDE; it’s your co-pilot to the future.