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writing-gpt-prompts

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UpdatedJuly 17, 2026 at 14:49

Use when authoring or refining a prompt for GPT-5.5 / OpenAI models (developer message, user message, tool description, agent instructions) to make it follow OpenAI's official prompt-guidance — covers outcome-first design, the Role / Personality / Goal / Success / Constraints / Output / Stop scaffold, markdown vs XML mixing, few-shot examples, agentic preambles, reasoning-effort and verbosity knobs, tool-persistence rules, and the phase parameter for the Responses API.

Installation

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