app-builder

The App Builder is the primary orchestration engine within the Antigravity system, designed to transform abstract natural language requirements into fully functional, production-ready full-stack applications. By leveraging a comprehensive set of predefined templates and a network of specialized agents, this skill automates the entire software development lifecycle from initial discovery to final deployment.

• Intelligent project detection using keyword matrices to identify requirements such as SaaS, REST APIs, mobile apps, or static sites.

• Automated scaffolding based on 12+ pre-configured stacks including Next.js, Prisma, FastAPI, Flutter, Electron, and Chrome extensions.

• Orchestration of 16 specialized agents, including project-planner, backend-specialist, frontend-specialist, and database-architect, to ensure cohesive development.

• Context-aware file handling through strict selective reading rules, ensuring agents only access necessary documentation and project files.

• Feature analysis and error handling integrated directly into the development workflow for iterative improvements.

• Users should provide clear, intent-driven requests (e.g., 'Make an Instagram clone with photo sharing') to allow the builder to accurately select the optimal tech stack.

• The system utilizes a modular skill directory; ensure the environment is correctly set up with global workflows and agent configurations before initiation.

• Always refer to project-detection.md for supported project types and tech-stack.md for 2025 default standard technology choices.

• Constraints include maintaining clean code standards, adherence to defined agent execution pipelines, and ensuring the local environment matches the expected Antigravity directory structure (e.g., ~/.gemini/antigravity/).

• Inputs consist of natural language prompt strings; outputs are structured project files, API route definitions, database schemas, and initial UI component scaffolds.