Hi HN,I’m an indie developer who kept running into the same bottleneck during code reviews and product planning: Someone would describe a process—“A → B if success else C”—and I’d stop everything to sketch it out. So I built a tool to turn plain English into editable flowcharts.### What it does- You can describe a process in natural language, and get a fully editable flowchart rendered on the page.- No login required for a one-time free run.- Logging in with Google (via BetterAuth) gives you one diagram per day.- It uses Gemini 2.5 Flash under the hood.- For now, exporting is only supported in `.excalidraw` format—but SVG/PDF are coming soon.### Tech stack- Frontend: Next.js 15 + TypeScript + Excalidraw- Backend: Vercel Serverless Functions- Auth: BetterAuth- Database: Supabase- Storage: Cloudflare R2 Bucket (S3-compatible)### Try it- Live demo: https://flowchartai.org The hosted version has usage limits due to server and model costs.- Source code (MIT-licensed): https://github.com/tanchaowen84/flowchartai If you prefer, you're welcome to self-host the open-source version instead.### Why I’m sharingI built this to solve a personal pain point. Would love to hear if it’s useful to you, or if there’s something obviously wrong I missed. Bug reports, suggestions, architecture critiques — all welcome. I’ll be in the comments all day.Thanks for taking a look.Comments URL: https://news.ycombinator.com/item?id=44615231Points: 1# Comments: 0