Rapid ASCII Application Blueprinting Framework (RABF)

Designing End-to-End App Workflows with ChatGPT Using ASCII Screens

A Complete Workflow-Driven Approach for CAD, Engineering, and Product Teams

Engineering teams lose enormous time translating business requirements into UI screens, data models, workflows, and system logic. Traditional UI/UX processes (whiteboards, hand sketches, static wireframes) slow down momentum, create ambiguity, and often fail to reach developers with clarity.

A modern alternative is emerging: using ChatGPT to design applications end-to-end through ASCII screen prompts.

This article shows you how to use ChatGPT to:

• Generate a workflow blueprint

• Produce ASCII screen mockups for every required step

• Define UI controls, inputs, validation, and events

• Output data structures, collections, and API calls

• Map everything to a real engineering context

• Deliver developer-ready specifications in minutes

This process is fast, iterative, and fully compatible with Autodesk Inventor, Autodesk Vault, .NET, web apps, and cross-platform tools.

Why ASCII Screens Work

ASCII screen wireframes are extremely powerful for early-stage design:

• Zero ambiguity

• Fast to iterate

• Platform-agnostic

• Developer-friendly

• Easy to version control

• Perfect for ChatGPT prompt-driven systems

They are efficient enough for rapid iterations yet structured enough for engineering teams to immediately convert into UI code.

What You Will Build

Using the workflow in this article, you will create:

1. A ChatGPT prompt that generates ASCII mockups for every screen

2. A consistent UI/UX structure across mobile, desktop, and cross-platform systems

3. A blueprint covering controls, events, validation rules, and transitions

4. Data structures for all entities

5. A complete functional workflow

6. A technical spec suitable for GitHub, engineering review, or onboarding

7. A linkable developer-friendly document (GitHub Pages recommended)

   
   

The ASCII Workflow Prompt System

Below are the three prompt variants your reader will choose from.

These correspond to real-world product categories:

• A: Cross-platform apps (desktop, web, mobile)

• B: Mobile-only (iOS, Android, iPadOS)

• C: Desktop-only (CAD plugins, Windows tools)

  
  

Each prompt instructs ChatGPT to produce ASCII screens, UI controls, data structures, workflows, and integration logic.

Prompt A — Cross-Platform Workflow Prompt

This is ideal for applications expected to run everywhere.

You are a senior software architect. Generate a complete end-to-end workflow design for an application.

1. Provide ASCII screen mockups (one per screen).

2. List all UI controls per screen (buttons, fields, dropdowns).

3. Provide full data models in JSON or C#.

4. Define collections needed.

5. Define workflow transitions and events.

6. Define permission logic.

7. Define API/SDK integration points.

8. Define validation and error handling.

9. Define output actions.

10. Add notes for developers.

Prompt B — Mobile-First Workflow Prompt

Best for smartphone or tablet form factors.

You are a senior software architect. Generate a mobile-first workflow design for an application.

1. Provide vertically stacked mobile-style ASCII screens.

2. List UI controls and mobile layout patterns.

3. Provide data models (JSON or C#).

4. Define collections needed.

5. Define transitions, navigation patterns, modals.

6. Define permission logic.

7. Define API calls and responses.

8. Define validation and mobile error handling.

9. Define output actions.

10. Add notes for mobile developers.

Prompt C — Desktop Workflow Prompt

Best for CAD automation, engineering tools, or Windows desktop applications.

You are a senior software architect. Generate a desktop workflow spec for an application embedded in a host software (e.g., Inventor).

1. Provide ASCII dialog windows and layouts.

2. List UI controls with exact placement.

3. Provide C#-style data models.

4. Define collections needed.

5. Define desktop workflow transitions.

6. Define permission logic (Vault groups).

7. Define integration points for Inventor and Vault SDK.

8. Define validation and desktop error handling.

9. Define output actions (export PDF, update metadata).

10. Add constraints and developer notes.

Reader Poll

For your application, which environment are you designing for?

• A: Cross-platform (desktop + mobile + web)

• B: Mobile-only

• C: Desktop-only (CAD tools, Inventor/Vault integrations)

Choose one, copy the corresponding prompt, and paste it into ChatGPT along with your requirements.

Requirements Checklist for the Reader

Before using the prompt, the reader must supply:

Business workflow goal

Example:

“User selects an assembly, enters metadata, exports a PDF, and updates Vault properties.”

Required fields

Project Number

Revision Letter

Change Description

Metadata sets

Naming convention rules

Output PDF format

Folder paths

Vault version handling

Permission rules

Vault group

Child group inheritance

Access restrictions

Technical environment

Desktop (e.g., Inventor 2025)

Mobile

Cross-platform

.NET version

SDK version

API integration endpoints

Internal metadata API

Vault 2025 SDK

Inventor API

Any internal REST endpoints

The more detail the reader provides, the sharper the ChatGPT-generated spec will be.

Real-World Example: Autodesk Inventor + Vault 2025 Workflow

Below is an example of how this system applies in engineering automation.

Scenario

A user clicks a custom ribbon button in Autodesk Inventor 2025.

The system opens a desktop window that collects:

• Assembly selection

• Metadata

• Project number

• Revision

• Change description

• Vault permission group

Then, after submission, it:

1. Exports a PDF of the active assembly

2. Names it according to a standard

3. Checks Vault group and sub-group permissions

4. Updates metadata

5. Saves or checks in the new version

6. Calls an internal API for metadata storage

7. Returns success or error states

All of this can be specified in detail using Prompt C.

Readers are encouraged to reference the official docs:

• Autodesk Inventor API overview
  https://help.autodesk.com/view/INVNTOR/2025/ENU/

• Autodesk Vault SDK documentation
  https://www.autodesk.com/support/technical/article/caas/sfdcarticles/sfdcarticles/Where-to-find-developer-documentation-on-Vault-SDK-and-API.html

  
  

These links ensure readers never get stuck during implementation.

How to Use This Article

This guide has:

• Clear headings

• Practical workflows

• Developer-ready examples

• Applicable to enterprise systems

• Easy to adapt for engineering teams

• Designed to be shared across organizations

  
  

Readers follow three steps:

1. Pick environment (A, B, or C).

2. Provide the requirements checklist.

3. Paste the prompt into ChatGPT to receive a full spec.

The output becomes a developer specification, suitable for GitHub, engineering review, or onboarding.

Call to Action

Use this system to produce your first workflow specification today.

You will create:

• ASCII UI screens

• Workflow diagrams

• Data models

• Permission rules

• API call sequences

• Error handling

• Fully linked developer documentation (GitHub recommended)

This workflow collapses the entire design cycle into hours instead of weeks — and produces clearer, more repeatable CAD and engineering automation systems.

After this have ChatGPT generate your spec in the same conversation so it remembers your preferences.