---
name: al-050-build-a-simple-internal-tool
description: "Non-developers can get a working mini-app. Use when the user wants help with no-code apps (coding) for a small business."
---

# Build a simple internal tool

Non-developers can get a working mini-app.

## Inputs to collect first
Ask the user for anything below that they haven't already given you. Don't guess missing facts.

- , e.g. tracks client invoices with name, amount, due date, paid…

## Instructions

Do the task below with the user's inputs in place of each [bracket].

Build a single-page web app that [describe, e.g. tracks client invoices with name, amount, due date, paid checkbox, saved in the browser]. Make it clean and mobile-friendly. Explain how to open it.

## Safety checks (share these with the user)

- Check every figure, price and total against your own records before anything is sent, posted or booked. A person approves refunds, discounts, payments and price changes.
- Remove names, contact details, account numbers and other personal data the task doesn't need before you paste, and check your AI tool's data and training settings.
- Check names, dates, numbers and any claim against your own source material before you use the answer. AI can misread or invent details.
- Say clearly which parts need a person to review or approve before anything is sent, paid, posted or filed.

## About this skill

- Works with: Claude Artifacts, ChatGPT Canvas, Lovable, Replit Agent
- Based on this real-world example: https://500k.io/journal/autonomous-business-ai-concrete-example
- Free prompt from AgentPlaybook Real Estate: https://agentic-library.netlify.app/prompt/al-050-build-a-simple-internal-tool/
- To install in an agent that supports Agent Skills, save this file as SKILL.md in a folder with the same name as `name` above (for example in your skills directory). Install steps for Claude.ai, Claude Code, Cursor and Codex: https://agentic-library.netlify.app/skills/