Semantic Coverage
A tool to visualize RAG blind spots using UMAP
Details
- External ID
- 46374430
- Source
- HN
- Company
- —
- Product
- Semantic Coverage
- Website domain
- github.com
- Launched
- Dec. 24, 2025
- Cohort
- —
- Upvotes
- 5
- Upvotes percentile
- 0.10400763358778627
- Tags
- —
- Fetched at
- Sept. 7, 2026, 9:25 p.m.
- Updated at
- Sept. 7, 2026, 9:25 p.m.
Description
I built this because I was tired of guessing why my RAG system was failing. It projects user queries vs. documents into 2D space to find 'Red Zones' (high user intent, low documentation). Open source, built with FastAPI + React. Would love feedback on the clustering logic.
Enrichment
- Theme
- web development and browser utilities
- Vertical
- Horizontal
- Function
- Observability & eval
- Audience
- Developer
- AI stance
- AI feature
- Project type
- Commercial product
- Normalized one-liner
- visualize rag blind spots with umap
- Manually corrected
- False
Could you build this?
Yes The system utilizes off-the-shelf libraries (FastAPI, React, UMAP, and an embedding model) to generate 2D scatter plots of query and document vector embeddings.
Discussion
1 comment analyzed.
Competitors
Other products that read as similar to this one — 24 launches clear the similarity bar, closest 8 shown.
Attention rank: #25 of 25 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 47 days after the earliest competitor.
- knowforge-metrics-rag · github · 2026-09-10 · 12 upvotes · similarity 0.38
- Analyzing Semantic Redundancy in LLM Retrieval (Google GIST Protocol) · hn · 2026-01-27 · 6 upvotes · similarity 0.37
- RAG-chunk · hn · 2025-11-15 · 10 upvotes · similarity 0.36
- Captain - The Reliable Alternative to RAG · yc · 2025-11-07 · 115 upvotes · similarity 0.34
- Irpapers · hn · 2026-02-23 · 5 upvotes · similarity 0.34
- OpenFable · hn · 2026-04-08 · 5 upvotes · similarity 0.34
- Semantic Overlays · hn · 2026-09-01 · 6 upvotes · similarity 0.34
- Ex Situ · hn · 2026-07-21 · 51 upvotes · similarity 0.33
Other launches for this product
- No other launches for this product.
Same idea, different domain
Nobody's really built a observability & eval tool for Media & entertainment yet.