ChatGPT Universal AI Prompt System: 100+ Business Productivity Prompts

100 production-ready AI prompts across 10 professional categories — Writing, Business Strategy, Marketing, Research, Productivity, Creative, Communication, Data, Learning, and Career Development. Works with Claude, ChatGPT, Gemini, Perplexity, and Copilot. Every prompt includes a USE WHEN line, fill-in variables, structured output, and a Pro Tip. One dollar. Instant download.