System prompt generator — also inside Claude Code and Codex
Updated July 2026
PromptDC Desktop turns a short brief into a structured system prompt in any macOS or Windows app, browser, IDE or terminal. Select your draft, press the global shortcut, review the editable role, rules, constraints and output format, then Replace or Copy.
Before and after
a support agent for a SaaS that answers billing questions
You are a billing support assistant for a SaaS product. Role: answer questions about plans, invoices, refunds, and payment methods. Rules: only use the billing facts provided in context; never invent prices; if unsure, ask one clarifying question. Tone: concise, friendly, professional. Format: 2 to 4 sentences, then a bulleted next step. Refuse: legal, tax, or account-security actions, and escalate those to a human.
Plans from $9/mo, or Lifetime from $69 with your own API key.
One desktop install works everywhere, including ChatGPT and Claude desktop, Cursor and VS Code chat panels, and Claude Code, Codex CLI, Gemini CLI and Grok in terminals. PromptDC is the first desktop app to enhance prompts inside the terminal. The Chrome extension adds in-place rewriting and per-website profiles without Accessibility permission. Optional IDE extensions add a target-agent picker plus Simple or Structured output; the Code profile turns vague coding requests into implementation-ready prompts.
Frequently asked questions
What makes a good system prompt?
A clear role, explicit rules and constraints, a defined tone, an output format, and refusal boundaries. PromptDC includes all of these so your agent behaves consistently.
Can I use the output for a custom GPT or agent?
Yes. The generated prompt works for custom GPTs, Claude projects, API system messages, agent frameworks and coding agents in IDE or terminal chat interfaces.
Is it free?
No. PromptDC is a paid tool. This page shows an example and structure guide; the desktop app generates and refines selected system prompts across macOS and Windows.
Enhance your coding prompts.
Right where you code.
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