This product was not featured by Product Hunt yet. It will not be visible on their landing page and won't be ranked (cannot win product of the day regardless of upvotes).
Struppëflo
A thinking canvas that compiles to the structured AI prompt.
Structured outputs start from structured thoughts. Struppëflo is a thinking canvas that compiles itself into the brief a frontier model can actually finish in one pass. Drop your thoughts as cards. Group them into named zones. The layout becomes the prompt. No account. No lock-in. Bring your own key or run entirely in the browser. Local-first: boards live in your browser, your data never touches our servers. Free during launch. Open source (AGPL-3.0).
Hej 👋 I'm Justin, solo building this.
The pitch: frontier models are great at long tasks when given structure. They're bad at them when given soup. Struppëflo gives you the structure for free. You arrange thoughts spatially, and the canvas compiles to the prompt the model actually follows.
What's new vs Notion / ChatGPT / Tldraw / etc:
• Spatial → structured compiler. Nobody else does this. Same board, same prompt, every run.
• Local-first. Boards live in your browser. No account. No backend.
• BYOK or in-browser. Bring your own Anthropic / OpenAI / Google / MiniMax / Moonshot key or run a small local model in the browser, no key at all.
• Live X-Ray. See the literal prompt the model receives, with token breakdown per section. You can diff prompt changes from board changes.
• Five templates out of the gate. Launch Plan, PRD, Research Synthesis, Content Pipeline, Brain-Dump Triage.
• Open source (AGPL-3.0).
What I want feedback on:
• Does the spatial → structured flow feel useful, or too clever-by-half?
• Is "no hosted backend, no account" a feature or a deal-breaker for you?
• What template would unlock this tool for you?
In the comments all day. AMA.
Dropped a messy brainstorm into cards and the grouped zones actually translated into a clean prompt that didn't need three rounds of fixing. Love that nothing left my browser.
How does the bring-your-own-key setup actually work in practice, like do you store the key locally or does it still pass through somewhere on the way to the model?
How does the local-first setup actually work if I want to access the same board across multiple devices, or am I pretty much stuck on a single browser for now?
About Struppëflo on Product Hunt
“A thinking canvas that compiles to the structured AI prompt.”
Struppëflo was submitted on Product Hunt and earned 7 upvotes and 7 comments, placing #90 on the daily leaderboard. Structured outputs start from structured thoughts. Struppëflo is a thinking canvas that compiles itself into the brief a frontier model can actually finish in one pass. Drop your thoughts as cards. Group them into named zones. The layout becomes the prompt. No account. No lock-in. Bring your own key or run entirely in the browser. Local-first: boards live in your browser, your data never touches our servers. Free during launch. Open source (AGPL-3.0).
Struppëflo was featured in Productivity (655.7k followers), Artificial Intelligence (473.1k followers) and Tech (627.5k followers) on Product Hunt. Together, these topics include over 415.4k products, making this a competitive space to launch in.
Who hunted Struppëflo?
Struppëflo was hunted by Justin C.. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how Struppëflo stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Justin C.