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System Prompt Generator for Your AI Agents (Mega-Prompt)

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System Prompt Generator for Your AI Agents (Mega-Prompt)

A mega-prompt that generates expert-level system prompts for your own AI agents or custom GPTs: built on Chain of Thought structure, negative prompting and adaptation by model size.

Mehmet Kocabaş
Mehmet Kocabaş17 Temmuz 2026

The thing that eats the most time when setting up an AI agent or custom GPT is writing the system prompt from scratch. The mega-prompt in this guide does that for you: it asks you four questions, then generates an expert-level system prompt that reasons step by step and knows what not to do.

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