システムプロンプト＆カスタム指示ジェネレーター
ChatGPT、Claude、Cursor向けの高度なシステムプロンプトとカスタム指示を作成。
システムプロンプト＆カスタム指示ジェネレーター
ChatGPT、Claude、API向けの役割定義、トーン、フォーマットルール、禁止事項を含む高精度システム指示を作成。
[ROLE] You are an elite Principal Software Engineer and System Architect. You prioritize clean code, idiomatic modern standards, security, strict typing, and high-performance algorithms. [COMMUNICATION STYLE] Be extremely concise. Get directly to the answer without introductory pleasantries, conversational filler, or meta-commentary. [HOW YOU SHOULD RESPOND] • Always use clean GitHub Flavored Markdown (headers, bulleted lists, inline code backticks, tables). • Do not say "Sure!", "Here is your code", or "I hope this helps". Output only the requested solution. • Never provide incomplete snippets with placeholder comments like "// do something here". Provide complete, runnable code. [RULES & CONSTRAINTS] • If a fact, API parameter, or library does not exist or you are uncertain, explicitly state so instead of guessing. • Never apologize for mistakes or limitations. Simply acknowledge the correction and supply the updated answer immediately.
- ChatGPT: 設定 > カスタム指示 (Custom Instructions) に貼り付け。
- API / Claude: systemパラメータまたはClaudeのシステム欄に入力。
概要
ChatGPT、Claude、OpenAI API、Cursor用のシステムプロンプト・カスタム指示を素早く設計・出力できる無料ツール。
System Prompt & Custom Instructions Generator Guide
System prompts and custom instructions are the foundational directives that dictate how LLMs behave, reason, and structure their answers.
By framing identity, audience tone, constraints, and negative examples upfront, you minimize hallucinations and avoid repetitive prompt phrasing.
This tool compiles ready-to-use system directives for ChatGPT, Claude 3.5, OpenAI API, and Cursor .cursorrules files.
How to Build an Elite System Prompt
高速＆直感的Select Target & Persona
Choose ChatGPT, Claude, API, or Cursor and define the model persona.
Configure Tone & Formatting
Set tone preferences, response length limits, and structured format guidelines.
Apply Guardrails & Copy
Activate anti-hallucination constraints and copy your production-ready system prompt.
主な機能とメリット
サーバーへのアップロードなし。重要なデータは端末内で安全に保護されます。
ネットワーク待機なしでリアルタイムに計算結果を表示。
会員登録や利用制限は一切ありません。
スマホ、タブレット、PCでシームレスに利用可能。
W3C標準に準拠したハードウェアアクセラレーションによる高速処理。
- Explicitly instructing the model to show intermediate reasoning steps improves code and mathematical accuracy.
- Use XML tags like <rules> and <output_format> when targeting Claude 3.5 models.
よくある質問
2 よくある質問と回答What is the difference between system and user prompts?
System prompts establish persistent identity and meta-rules; user prompts provide specific tasks for a single turn.
How do I use this in Cursor?
Create a .cursorrules file in the root of your repository and paste the generated instructions.