AI Prompt Builder & Structural Prompt Generator
Create structured AI prompts with automatic variable forms, XML tag encapsulation, token estimation, and model-specific optimization adapters.
An advanced, privacy-first prompt engineering playground and structure builder for the AI-driven era. Paste or draft any prompt template with placeholder variables using standard double curly braces like {{variable}}. The tool recursively parses the input, extracts all unique variables, and dynamically constructs a form to fill them. It features target-model optimization adapters for ChatGPT (System/User splits), Anthropic Claude (auto XML tags injection like <instructions>, <context>, <examples> for maximum adherence), and image generation parameter tuning. Everything runs in-browser, making your proprietary business rules, formulas, and prompts 100% secure from server leakage.
How to use
- 1
Select or Write Template
Choose an optimized preset from the templates list or draft your custom prompt in the editor using {{variable}} placeholders.
- 2
Fill Form Variables
The tool automatically extracts all template placeholders and constructs a dynamic form. Fill in the values to populate the prompt.
- 3
Choose Optimization Adapter
Toggle between Standard, Claude XML (auto wrap in structural tags), or ChatGPT modes to fit specific large language models.
- 4
Compress and Copy
Enable compression to strip redundant spaces and save tokens, preview the estimated token footprint, and copy or download the result.
FAQ
Q.Is it safe to write sensitive business prompts in this tool?
Yes, 100% secure. This tool operates entirely locally in your web browser. No prompt content or variable inputs are ever sent to a server.
Q.How does the variable extraction work?
The editor continuously scans your input for double curly brace variables like {{role}} or {{topic}}. It automatically dedups them and renders convenient inputs.
Q.Why does Claude need XML tags?
Anthropic's Claude is explicitly trained to understand structured instructions inside XML blocks (e.g. <instructions>, <examples>). Using XML tag adapters increases compliance rate.
Q.What does the 'Compress Prompt' option do?
It cleans up redundant carriage returns, spaces, and tab characters. This reduces the total Token count, directly lowering your LLM API costs.
Q.Can I share my customized prompts with others?
Yes. Click the Share button to generate a stateless link containing your prompt template and parameters compressed into the URL. No database is used.