Everything you need to go from first prompt to shipped app.
Sign up, hit New project, and describe the app in one sentence. 'A landing page for a dog-walking marketplace' is enough — the agent asks no questions, it builds.
Chat on the left, live preview on the right. Below the preview: the file explorer with every file the agent wrote. Click any file to view or edit it.
Every message is a build instruction. Small, specific requests work best: 'make the hero darker', 'add a testimonials section', 'rewrite the headline for accountants'.
Say 'a booking page where customers pick a slot and get a confirmation' rather than naming frameworks. The agent picks sensible tech.
Section-level detail is the sweet spot: 'hero with CTA, 3-feature grid, pricing table, FAQ, footer'.
'Minimal, dark, Linear-style' or 'friendly, rounded, pastel' — aesthetic direction dramatically improves output.
Ship the skeleton first, refine after. Long multi-part prompts dilute each instruction.
Each agent instruction costs 1 credit. Free includes 25/mo, Pro 500/mo, Team 2,500/mo. Credits reset on a rolling 30-day window.
Upgrade from Settings → Billing or the pricing page. Stripe handles checkout; without Stripe configured, a dev-mode upgrade path is available.
Every project can be downloaded as a zip from the workspace toolbar. The code is vanilla HTML/CSS/JS — deploy it to any static host.
You own all generated code outright, including output generated on the Free plan.
Set ANTHROPIC_API_KEY, OPENAI_API_KEY, or AI_BASE_URL + AI_API_KEY for any OpenAI-compatible endpoint (DeepSeek, OpenRouter, Groq, local harnesses). AI_MODEL overrides the default model.
Promptax is a standard Next.js app: clone, npm install, prisma db push, npm run dev. SQLite by default; swap to Postgres by changing the Prisma datasource.