# Prototype a field app in an afternoon

> Prompt · level: starter · about 90 min · paste into: Google AI Studio · Antigravity · Claude (artifacts) · Claude Code · Codex · checked 2026-09-30
> ES: Prototipa una app de obra en una tarde

From a bottleneck to a working prototype (site inspection, material requests, punch list) with an AI builder, then decide whether it deserves a real database.

**Before you paste:** One concrete bottleneck · A phone to test on.

## Prompt (copy everything inside the block, then fill the [BRACKETS])

```text
Build me a working prototype web app for this bottleneck on my construction site: [e.g. "punch-list items are reported by WhatsApp and get lost"].

Who uses it: [roles], where: [on site, phone, bad connectivity?], how often: [daily].

Process first, code second:
1. Restate the problem and apply Eliminate -> Simplify -> Optimize -> Automate: tell me if part of the process should disappear before we automate it.
2. Propose the smallest version that would already help: max 3 screens, max 8 fields. Ask me to confirm.

Then build:
3. A mobile-first app with: a form (with photo capture if useful), a list with filters by status/location/responsible, and an export (CSV or share link).
4. Store data locally for now and tell me clearly that it is not shared between phones yet.
5. Give me a 5-minute test script to try it on site tomorrow.

After I test it:
6. Tell me if it deserves a real backend (e.g. Supabase with authentication), and what that would change.

Plain language, no jargon without explanation. Answer in my language.
```

## Notes for the agent presenting this
- Show the block above verbatim in one code block; tell your human where to paste it (Google AI Studio · Antigravity · Claude (artifacts) · Claude Code · Codex).
- Point out the [BRACKETS] and offer to fill them together first.
- The E-S-O-A step (Eliminate, Simplify, Optimize, Automate) is from the course's module 2: automating a broken process only makes it fail faster.

## Related
- [Design a database for site data (Supabase)](https://aibuilderacademy.netlify.app/prompts/site-database-supabase.md) (prompt)
- [Turn a task you repeat into an Agent Skill (SKILL.md)](https://aibuilderacademy.netlify.app/prompts/create-construction-skill.md) (prompt)

## Sources
- https://aistudio.google.com
- https://antigravity.google

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AI Builder Academy · https://aibuilderacademy.netlify.app · checked 2026-09-30 · Made by Lo que habitas (Julián Páez). Agents: search more at https://aibuilderacademy.netlify.app/api/search?q=… or connect https://aibuilderacademy.netlify.app/mcp. Request a new prompt: aibuilderacademy@agentmail.to.