200+ AI Prompt Library

200+ AI Prompt Library is an AI education tool that provides a curated collection of battle-tested prompts and a 30-page master guide for developers, marketers, and business owners who want consistent, high-quality results from AI models. Created by GeneralistProgrammer and sold as a one-time purchase on Gumroad, the library is organized into six functional categories covering over 72 production-ready prompts.

The Master Guide covers eight core prompting techniques — role prompting, chain-of-thought reasoning, few-shot examples, constraints and negatives, output format control, scratchpad technique, iterative refinement, and persona seeding — with before/after examples and documented failure modes for each.

The Writing and Copywriting section includes 15 prompts for full sales page generation, cold email sequences, a 5-email SaaS onboarding welcome flow, Twitter/X thread formulas, Facebook and Google ad copy, re-engagement emails, and e-commerce product descriptions. The Coding section provides 15 prompts for tasks such as feature implementation with TDD, REST API endpoint design, React component creation from a description, database schema design, code review for security issues, and unit test generation.

The Analysis section covers 11 prompts including competitor analysis with positioning matrix, SWOT for investor presentations, TAM/SAM/SOM market sizing, unit economics (CAC, LTV, payback period), and A/B test interpretation. Image Generation includes 19 prompts for Midjourney, DALL-E 3, and Stable Diffusion, plus a negative prompt library. The Agent and System Prompts section contains 12 prompts covering system prompt design, customer-facing chatbot configuration, tool schema design, hallucination reduction, and multi-agent pipeline orchestration.

All files are delivered as plain Markdown, compatible with Notion, Obsidian, VS Code, or any text editor. A commercial-use license is included, allowing use in client projects and agency work, with resale of raw files prohibited.

Used by developers, marketers, solopreneurs, and agency owners who want ready-to-use AI prompts for writing copy, generating code, running business analysis, creating images, and designing AI agent systems. Also useful for anyone learning structured prompting techniques to improve output quality from models like ChatGPT, Claude, or GPT-4.