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What is Capacity?
Capacity is an AI-powered development platform designed to transform your ideas into fully functional, full-stack web applications in a fraction of the time it takes for traditional development. By moving beyond simple "vibe coding"—where AI guesses your intent—Capacity uses a structured "Spec Coding" workflow to ensure the generated code matches your exact requirements.
Whether you are a solo founder launching an MVP or a developer looking to accelerate your workflow, Capacity acts as an AI cofounder. It handles the heavy lifting of writing code, managing databases, and deploying to the cloud, allowing you to focus on your product vision and user experience.
Key Features
- 📋 Spec Coding Framework: Stop relying on vague prompts. You define your project brief, user experience, and design requirements upfront. This structured approach ensures the AI understands the full scope before writing a single line of code, resulting in better architecture and fewer rewrites.
- 🤖 Intelligent AI Cofounder: Capacity doesn't just generate snippets; it brainstorms with you. It helps refine your vision, suggests features, and builds out entire components in real-time, functioning as a collaborative partner throughout the development lifecycle.
- 📂 Multi-File Refactoring: Unlike basic AI tools that focus on one file at a time, Capacity possesses deep context awareness. It can refactor code across your entire project, maintaining dependencies and ensuring consistency across the front-end and back-end.
- 🛠️ Automatic Error Correction: Experience a smoother path to production with agentic debugging. Capacity identifies and fixes bugs automatically during the build process, reducing the need for manual troubleshooting and constant back-and-forth prompts.
Use Cases
- Launch a Startup MVP in Hours: A solo founder can go from a landing page concept to a working booking platform or B2B SaaS tool in a single afternoon. By defining the specs first, you validate the logic before the code is even written.
- Build Custom Internal Tools: Marketing or operations teams can create specialized tools—like an AI SEO writer or a property management dashboard—without needing a dedicated engineering team.
- Rapid Prototyping and Cloning: Use existing web patterns as a starting point to clone and customize complex layouts, then integrate them with a live Supabase database for immediate functionality.
Why Choose Capacity?
Capacity differentiates itself by prioritizing predictable outcomes over experimental chat interactions. While traditional AI generators often produce generic, single-file code that requires heavy manual fixing, Capacity focuses on "Agentic Coding." This means the AI makes intelligent decisions based on your project's specific structure and conventions.
The platform uses a modern, high-performance tech stack including Vite, Supabase, and shadcn/ui, powered by the Claude Opus 4.5 model. Because the output is production-ready, you aren't locked into the platform; you own 100% of the code and can export it to your own environment at any time.
Informed Decisions
Capacity represents a shift from "chatting with AI" to "engineering with AI." By investing a few minutes in defining your specifications, you save hours of debugging and architectural pivots later. It is a professional-grade tool for those who want to ship high-quality software without the overhead of traditional manual coding.
More information on Capacity
Top 5 Countries
47.05%
3.1%
3.02%
United States (47.05%)
India (3.1%)
Nigeria (3.02%)
United Kingdom (2.56%)
Russia (2.36%)
Traffic Sources
13.46%
40.44%
43.17%
social (1.91%)
paidReferrals (0.83%)
mail (0.1%)
referrals (13.46%)
search (40.44%)
direct (43.17%)
Source: Similarweb (Sep 24, 2025)
Capacity was manually vetted by our editorial team and was first featured on 2023-12-18.
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