I built this ecosystem because I was tired of context-switching between my IDE and browser just to craft a decent prompt for ChatGPT or Claude.
fnPrompt creates structured "System Prompts" (Persona, Context, Constraints) from raw ideas.
The ecosystem consists of: 1. VS Code Extension: Generates prompts directly in the editor (right-click refactor). 2. CLI Tool: For terminal-based workflow using token auth. 3. Chrome Extension: Injects prompts into active AI chat tabs. 4. Web: Central hub for managing the prompt library.
Tech stack: - Backend: PHP (Vanilla) + MySQL - Frontend: Tailwind CSS + JS - Extensions: TypeScript for VS Code, JS for Chrome - AI: OpenAI API for the prompt engineering logic.
It is currently bootstrapped and free to use. I’d love to get your feedback on the implementation, especially the VS Code workflow.