Building Full-Stack Apps with Antigravity Agents: Step-by-Step Tutorial (2025)
N
Nick
December 12, 2025
👁️ 7 views
Artificial Intelligence has moved beyond autocomplete and code suggestions. In 2025, we are entering the era of agentic development, where AI agents don’t just assist developers—they actively design, build, and evolve entire applications.
Google Antigravity is at the center of this shift.
While many developers understand Antigravity conceptually, practical, end-to-end tutorials on Antigravity agents are still rare. This guide fills that gap.
In this tutorial, you will learn how to build a complete full-stack application using Antigravity agents, step by step—from idea to deployment.
This guide targets:
antigravity agents tutorial
agentic development
AI build full stack app
What Is Agentic Development?
Agentic development is a software development approach where autonomous or semi-autonomous AI agents are responsible for executing meaningful engineering tasks.
Instead of:
Writing every function manually
Gluing systems together by hand
Repeating boilerplate across projects
You:
Define intent
Assign missions
Review outcomes
Iterate at a system level
Antigravity agents operate as specialized AI engineers that collaborate with you.
Why Antigravity Agents Are a Game Changer
Traditional AI tools:
React to prompts
Work line-by-line
Lack system awareness
Antigravity agents:
Understand architecture
Maintain context across the project
Coordinate backend, frontend, database, and infrastructure
Improve systems iteratively
This makes Antigravity uniquely suited for full-stack application development.
What We Will Build in This Tutorial
By the end of this guide, we will have built a production-ready full-stack application with:
User authentication
Backend APIs
Database schema and migrations
Frontend UI
Infrastructure setup
Deployment-ready architecture
All powered by Antigravity agents.
Prerequisites (Beginner Friendly)
You do NOT need to be an expert in:
Backend frameworks
Databases
DevOps
You only need:
Basic understanding of web apps
Willingness to think in systems
Clear intent
Antigravity handles the heavy lifting.
Core Antigravity Agent Concepts (Quick Recap)
Before we build, let’s align on four concepts:
1. Agents
Agents are specialized AI workers (e.g., Backend Engineer, Frontend Engineer, DevOps Engineer).
2. Missions
Missions define what needs to be done, not how.
3. Context
Context includes your existing code, constraints, and decisions.
4. Execution Loop
Agents propose → you review → agents execute → system evolves.
This loop is the heart of agentic development.
Step 1: Define the Full-Stack Mission
Instead of starting with code, we start with intent.
Mission Prompt
Build a full-stack web application with:
User authentication (signup, login)
Backend REST APIs
PostgreSQL database
Simple frontend UI
Secure and scalable architecture
Follow best practices for production readiness.
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This single mission replaces days of manual setup.
Step 2: Let Antigravity Design the Architecture
Antigravity agents will propose:
Backend framework choice
API structure
Database schema
Authentication flow
Frontend stack
Deployment strategy
What You Should Do Here
Review the architecture
Adjust constraints if needed
Approve the plan
This step is critical. You are acting as the architect, not the coder.
Step 3: Backend Agent – API & Business Logic
Once approved, the Backend Engineer agent executes.
It will:
Generate API routes
Implement authentication logic
Handle validation and errors
Structure the codebase cleanly
Example refinement prompt:
Use JWT-based authentication.
Add proper error handling and logging.
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Antigravity updates the backend accordingly.
Step 4: Database Agent – Schema & Migrations
The Database Architect agent handles data modeling.
It will:
Design tables
Define relationships
Generate migrations
Add indexes for performance
Example prompt:
Optimize the database schema for user lookups and authentication.
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This eliminates one of the most error-prone parts of development.
Step 5: Frontend Agent – UI & Integration
Now the Frontend Engineer agent takes over.
It will:
Create UI components
Handle authentication flows
Connect frontend to backend APIs
Ensure clean state management
Example prompt:
Create a clean, minimal frontend for login and signup.
Connect it to the backend APIs.
