What it is
A free, open-source SEO and Generative Engine Optimization (GEO) search radar CLI suite and MCP server for developers and coding agents. It replaces paid tools like Semrush and OpenSEO by scraping DuckDuckGo locally and using TypeSafe Jev System One for deterministic evaluation.
How it uses Jev
Jev is used as a deterministic evaluation oracle for semantic intent classification, competitive gap detection, and AI visibility (GEO) scoring. It does not generate prose. The README does not specify the exact state or typed questions passed to Jev, nor how the returned probabilities are consumed in code.
Technique worth stealing
Using a deterministic evaluation oracle (Jev) instead of a conversational LLM for SEO scoring.
Evidence
Each line is one question put to Jev about the README. ≥ 0.60 reads as yes, ≤ 0.40 as no; in between Jev is not making a call.
- Jev-centricunclear0.45
- Shows a System One patternno0.17
- Handles uncertaintyno0.04
- Measuredno0.07
- Runnableyes0.97
- Worth recommendingno0.29
- Model replicano0.12
- Problem scopescore on a 0–2 scale1.08
- About Jevyes0.87
Signals by Jev jev-1.13.0, card written by DeepSeek V4.1 Flash from the README on 21 Sept 2026.