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Constellate — Find what's missing
The gaps in tech that nobody is building yet
Every week, Claude reads 9 tech feeds (HN, arXiv, PH, YC...) and finds the gaps: things everyone is circling but nobody is building. 63 gaps detected this week across 2013 ideas. Source-available BSL 1.1. If you don't know what to build, start here.
Hey PH 👋
I'm Gaston, solo dev from Mendoza, Argentina. I built Constellate because I was drowning in tech feeds — HN, arXiv, GitHub Trending, Product Hunt, and 5 others — and kept noticing that the most interesting stuff wasn't in any individual post. It was in the gaps between posts: things the community keeps circling but nobody is building.
So Constellate finds those gaps automatically. Every week, Claude reads ~2000 tech ideas, clusters them, and reasons about groups of 3-6 ideas at once. When a group keeps pointing at the same missing piece, that piece shows up as a "gap" — something you could build.
This week it found 63 gaps. Some examples:
- "AI Agents That Actually Test and Verify" — calling out the vapor in "ship ready code" claims
- "Multi-Agent Debugging and Failure Attribution Tools" — glaring gap between research and deployment
- "Continuous Testing for Model Drift" — Playwright-style testing but for AI behavior
The site also has 4 other pattern types (chains, convergences, triangulations, spectrums) for different uses.
Stack: TypeScript, @anthropic-ai/sdk, TF-IDF + K-means clustering. Source-available under BSL 1.1 (converts to Apache 2.0 in 2030).
Demo: https://www.youtube.com/watch?v=lnlSh9iRwSk
Try it: constellate.fyi
Source: github.com/Harthor/constellate-engine
Genuinely happy to answer anything. Roasts welcome.
About Constellate — Find what's missing on Product Hunt
“The gaps in tech that nobody is building yet”
Constellate — Find what's missing was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #150 on the daily leaderboard. Every week, Claude reads 9 tech feeds (HN, arXiv, PH, YC...) and finds the gaps: things everyone is circling but nobody is building. 63 gaps detected this week across 2013 ideas. Source-available BSL 1.1. If you don't know what to build, start here.
On the analytics side, Constellate — Find what's missing competes within Productivity, Developer Tools and Artificial Intelligence — topics that collectively have 1.6M followers on Product Hunt. The dashboard above tracks how Constellate — Find what's missing performed against the three products that launched closest to it on the same day.
Who hunted Constellate — Find what's missing?
Constellate — Find what's missing was hunted by Gaston. 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.
For a complete overview of Constellate — Find what's missing including community comment highlights and product details, visit the product overview.
Gaston