Real, published system prompts from shipping AI products — each with source attribution and notes on what makes it work.
The most elaborate Copilot VS Code agent prompt, for GPT-5. It combines the Copilot identity and refusals with a detailed communication-style guide, m…
The Copilot VS Code agent prompt for GPT-4.1, distinguished by an <applyPatchInstructions> section that mandates the apply_patch tool with a strict di…
An expanded Copilot VS Code agent prompt for GPT-5 mini that adds a full software-engineering workflow: explicit mission/stop criteria, requirements-u…
A long, dated (2025-08-20) Codex CLI system prompt with rich behavioral sections: personality/tone, preamble messages before tool calls, an update_pla…
A compact Codex CLI developer message framing the model as a terminal-based agentic coding assistant in a sandboxed, git-backed workspace. It sets a k…