{"slug": "show-hn-1shotgen-from-rough-idea-to-full-build-prompt-in-1-shot", "title": "Show HN: 1ShotGen – From rough idea to full build prompt in 1 shot", "summary": "A developer launched 1ShotGen, a tool that transforms rough ideas into structured build prompts for coding agents, aiming to reduce back-and-forth iterations by ensuring the initial prompt contains sufficient context and constraints. The tool is free to try and designed for users of AI coding assistants like Cursor, Claude Code, and Copilot.", "body_md": "Hi HN. I built 1ShotGen. I lean on coding agents (Cursor, Claude Code, Copilot) all day, and the thing that kept wrecking my flow was the back and forth. I'd fire off a quick prompt, the agent would confidently build the wrong thing, and I'd burn the next five rounds walking it back. What got me was that I could always describe the feature way better AFTER it got it wrong. The intent was in my head the whole time, I just never spelled it out up front. So that's the part 1ShotGen handles. You drop in a rough idea, it pulls the missing details out of you, and it turns the whole thing into a structured build prompt with the context, constraints, and edge cases your agent actually needs. The tool writes the prompt. Your agent does the build. The name is the goal: get enough into that first prompt that the agent can one shot it instead of guessing. It won't run your agent or ship code for you, and it can't rescue a genuinely vague idea (garbage in, etc.). But for a feature you understand and just haven't written out properly, it gets you a much better starting prompt.\n\nPlus, with a max or pro plan this will definitely help you really maximize those subscriptions if you have plenty of tokens leftover between resets! Use em if you got em.\n\nGive it a whirl. It's free to try.\n\nIt might seem pointless to some, and I understand that, but it's helped me out a ton and thought maybe it could help others too.\n\nComments URL: [https://news.ycombinator.com/item?id=48729839](https://news.ycombinator.com/item?id=48729839)\n\nPoints: 1\n\n# Comments: 0", "url": "https://wpnews.pro/news/show-hn-1shotgen-from-rough-idea-to-full-build-prompt-in-1-shot", "canonical_source": "https://1shotgen.com/", "published_at": "2026-06-30 08:15:17+00:00", "updated_at": "2026-06-30 08:51:04.396650+00:00", "lang": "en", "topics": ["developer-tools", "ai-tools", "generative-ai", "large-language-models", "ai-agents"], "entities": ["1ShotGen", "Cursor", "Claude Code", "Copilot", "Hacker News"], "alternates": {"html": "https://wpnews.pro/news/show-hn-1shotgen-from-rough-idea-to-full-build-prompt-in-1-shot", "markdown": "https://wpnews.pro/news/show-hn-1shotgen-from-rough-idea-to-full-build-prompt-in-1-shot.md", "text": "https://wpnews.pro/news/show-hn-1shotgen-from-rough-idea-to-full-build-prompt-in-1-shot.txt", "jsonld": "https://wpnews.pro/news/show-hn-1shotgen-from-rough-idea-to-full-build-prompt-in-1-shot.jsonld"}}