Description
The Custom Assistant Maker helps you write clear instructions for a Custom GPT or a Claude Project in minutes. It works offline.
Write instructions for a Custom GPT or a Claude Project in minutes.
One file you open in your browser. No account, no API key, no install — and it keeps working offline.
Custom assistant: who it’s for
- You use ChatGPT or Claude most days and keep retyping the same kind of request.
- You want a faster, calmer way to get good prompts without learning jargon.
- You prefer tools that keep your data on your own device.
Custom assistant: what’s inside
- Guided questions that write finished instructions
- Switch output: Custom GPT or Claude Project
- 20 fully written assistant templates with 80 conversation starters
- Knowledge-file checklist (25 points) with progress bar
- 220 test prompts, plus tests built from your answers
- Copy, .txt / .md download, saved assistants with backup
Because The Custom Assistant Maker is a single HTML file, it opens in Chrome, Edge, Safari or Firefox, keeps working without an internet connection after you download it, and keeps what you save on your own device. There is no account to create and no API key to paste.
How to use it in 3 steps
- Double-click the .html file. It opens in your browser, no install.
- Open Templates, pick the assistant closest to your job, and paste its instructions into a Custom GPT or Claude Project.
- Paste into ChatGPT or Claude. Your favourites and saves stay in this browser.
Formats and devices
- One self-contained .html file (opens in Chrome, Edge, Safari, Firefox)
- Works offline · mobile-friendly · saves in your browser with export/import backup
- 1-page Start Here PDF
Part of The AI Apps Pack
Works with ChatGPT, Claude and other AI chat assistants.
This custom assistant app is part of The AI Apps Pack. For account and feature questions, see the official OpenAI Help Center.
An independent, unofficial guide. Not affiliated with the companies whose tools it covers.
Digital download · All sales final
