🆓 Enjoy a smooth coding-quality chat experience with free AI chat tools — without paying for expensive coding agents.
Easy Prompt Builder (EZ-prob) is a lightweight Chrome extension that helps you organize, structure, and pack complex prompts for large language models (LLMs), especially when you are using free chat interfaces such as ChatGPT, Gemini, DeepSeek, and similar tools.
It is particularly useful for coding and technical tasks, where you need to provide:
- 📁 multiple files,
- ✅ clear requirements,
⚠️ strict constraints,- 🔗 and explicit dependency relationships,
all in a way that LLMs can understand reliably and consistently.
Modern coding agents are powerful — but often expensive.
If you:
- 💸 prefer not to subscribe to paid coding agents,
- 🆓 want to fully utilize the free quota of chat-based AI tools,
- 🎯 and still aim for high-quality, agent-like outputs,
then prompt structure becomes critical.
EZ-prob does not generate content for you.
Instead, it helps you systematically reorganize your own information — files, requirements, constraints, and dependencies — into a prompt layout that LLMs handle best.
Think of EZ-prob as a prompt packer:
- 📤 you provide the content,
- 🧩 EZ-prob optimizes the structure and logic,
- 📋 you copy & paste the result into any AI chat.
No magic. No hidden behavior. Full control.
-
🧩 Browser-only Chrome extension
No external installation, no CLI tools, no setup overhead. -
🔒 100% local & privacy-first
- 🌐 No remote servers
- 📡 No network requests
- ⚙️ No background workers
- 📜 No access to browsing history
- 🔘 Activated only when you open it
-
💾 Local-first data storage
All files and metadata stay on your own machine. -
🧱 Clear information blocks
Explicit separation of objectives, constraints, dependencies, and code. -
🔄 Designed for reuse & iteration
Reuse constraints, selectively include files, and quickly rebuild prompts.
EZ-prob organizes your input into a proven, LLM-friendly template:
I need you to rewrite the target file based on the structure and logic of the reference files.
Below are the task description, constraints, and the complete content of all files.
===========================
【TASK OBJECTIVE】
===========================
[Your main requirements]
===========================
【CONSTRAINTS THAT MUST BE SATISFIED】
===========================
[Constraint 1]
[Constraint 2]
...
===========================
【DEPENDENCY RELATIONSHIPS BETWEEN FILES】
===========================
[Dependency description]
===========================
【ATTACHED FILE CONTENTS】
===========================
Below I will provide the content of each file one by one.
[File content 1]
[File content 2]
...
(All attached files end here)- 📑 Clear separation between natural language and code
- 📍 Explicit markers and section boundaries
- ⬆️ Requirements and constraints appear before large code blocks
- 🎯 Important context is placed upfront, reducing model confusion
You never need to manually format this. EZ-prob assembles it automatically based on your inputs.
git clone https://github.com/paradox-solver/EasyPromptBuilder.git-
🌐 Open Chrome and navigate to:
chrome://extensions -
⚙️ Enable Developer mode
-
📂 Click Load unpacked
-
📁 Select the project folder
That’s it.
Click the EZ-prob icon in your browser toolbar to open the main panel.
Fig. 1 Main panel of EZ-prob
-
📝 Use the first text box to describe your main objective:
- 🤔 What do you want the AI to do?
- 📜 A script, a module, a refactor, a bug fix?
-
@ Type
@to trigger suggestions for:- 📁 uploaded files
⚠️ predefined constraints
-
🎮 Navigate with ↑ ↓ and confirm with
Enter.
-
📤 Drag files into the Drag zone, or click Create File to add them manually.
-
📋 Uploaded files appear in the list below (See Fig. 1).
Fig. 2 Create file dialog
📊 File indicators:
- 🔴 A red
!means the file lacks a description. - ✏️ Click the filename to edit its description.
- 🧠 Adding descriptions significantly improves model understanding.
⚙️ Important behavior:
- 📤 Uploading a file does not automatically include it in the final prompt.
- @ You must explicitly reference it using
@filename. - 🎯 This allows you to:
- 💬 mention key files early,
- 📄 and keep full code content at the end.
🔒 Privacy & storage:
- 💾 Files are stored locally in Chrome’s cache.
- 🌐 No uploads. No servers. No tracking.
- ⏳ Files have a configurable lifetime and are automatically purged.
-
⚙️ Constraints describe how the task must be performed.
-
📋 Open the Constraints panel to create, edit, or delete them.
Fig. 3 Constraint panel
📝 Guidelines:
- ✂️ Keep constraints short and precise
- @ Each constraint is referenced using
@constraint_name - 🚫 Avoid using
@inside constraint names
Like files, constraints are only included when explicitly referenced.
- 📝 Use the second text box to explain relationships between files.
- @ You can also use
@here to reference files or constraints.
- 📋 Click Copy Prompt
- 📤 Paste it directly into your AI chat interface
-
⚙️ Configure file lifetime and other behaviors
-
🔒 No permissions beyond what is strictly necessary
Fig. 4 Settings panel
EZ-prob is intentionally minimal and opinionated.
-
🔒 Local-first & privacy-first
No data ever leaves your machine. -
🎨 Simple, direct UI
No feature bloat. No unnecessary abstraction. -
🆓 For free AI users
Designed specifically for users who rely on free chat interfaces. -
📤 Zero content injection
The final prompt contains only your information. -
🔓 Full transparency
No sensitive permissions. No hidden access.
- 🧩 EZ-prob is a prompt packer, not a prompt generator
- 📄 Only text files are supported (no binaries or images)
- 🎲 AI behavior is probabilistic — results are not guaranteed
Issues and pull requests are welcome. Bug reports, feature ideas, and documentation improvements are all appreciated.
MIT License — free to use, modify, and distribute.
🤖 Enjoy free AI services.