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AI · July 10, 2025

System Prompt

Hi HN, Why I got tired of wasting time typing the same instructions to an LLM. "Proofread this," "Summarize that," "Translate this." What I built System Prompt: a free, open-source tool to create reusable AI workflows. It runs 100% in your browser, so your data and API keys stay with you. How Instead of always retyping "Proofread this text and correct it in a professional tone...", you create a reusable workflow in a 2 clicks. It's a node-based editor where you can add prompt nodes, AI nodes (for any model), and connect them. Everything is saved locally in your browser. GitHub:…

System Prompt launched on July 10, 2025 with 8 votes, #2,947 of 9,223 launches that month and more than 50% of that year's launches. The site was still online in September 2026, 1 year on.

What it does

Free node-based AI workflow builder. Create reusable tasks with drag-and-drop nodes, chain AI operations, use any model with your API keys. Runs entirely in browser, your data stays private. Perfect for email automation, content creation, data processing, etc.

Free open-source node-based AI workflow builder. Create reusable tasks with drag-and-drop nodes, chain AI operations, use any model with your API keys. Runs entirely in browser, your data stays private. Perfect for email automation, content creation, data processing, etc.

In the maker’s words, at launch

Hi HN, Why I got tired of wasting time typing the same instructions to an LLM. "Proofread this," "Summarize that," "Translate this." What I built System Prompt: a free, open-source tool to create reusable AI workflows. It runs 100% in your browser, so your data and API keys stay with you. How Instead of always…

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