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Data Infrastructure · Startup idea
Every RAG stack ships without an eval suite. The product that makes RAG testable — retrieval precision, answer faithfulness, context relevance — wins the team that's already burning $5K/mo on the wrong embeddings.
Why now
Ragas, TruLens, and DeepEval exist but the DX is rough. The next generation makes eval a 5-minute setup, not a 5-day science project.
The idea you could build today
SDK in TypeScript + Python that wraps any RAG pipeline. Capture retrieved chunks + final answer. Score against an LLM-graded rubric (retrieval precision, faithfulness, context relevance). Show the drift dashboard.
Build stack
The three repos already trying
No repos in the current period have crossed our minimum-volume + sector match for this idea. That can mean two things — the niche is too new for public GitHub signal to show up yet, or the buildable wedge is genuinely greenfield. Either way, watch this page; matches refresh weekly.
Matched against the current-period startup signal panel (ai-ml, developer-tools). Rankings shift weekly as the underlying GitHub activity moves. Read the methodology.
The seed-round pattern hiding in the trendline
RAG-eval OSS repos with velocity in the "LLM-as-judge" module + a TypeScript SDK in the same release are the seed-stage tells.
They're the leaders, all Python-only. The TypeScript-first wedge is open — most agent stacks are TS now.
Use the signal, not just the idea
The repos above re-rank automatically as commit velocity, contributor growth, and new-repo creation move. Want the data feed for this idea wired into your own stack? The MCP server exposes every signal as a tool any agent host can query.
Updated 2026-07-14. The framing is editorial; the “three repos already trying” slot is generated from the live signal panel. Anonymity rule: we name public GitHub orgs, never individual founders or stealth teams.