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jev-mod

gecm0/jev-mod

Claude Code mod exposing $.jev for typed calibrated judgments.

Automated README summary

Automatically summarized from the README on 11 Oct 2026; not a run by jevbooks. Run instructions and author-reported outcomes still need verification.

What it is

A Claude Code plugin that adds `$.jev` to the engine, letting other mods ask TypeSafe's Jev typed Choice, Score and Noul questions and receive calibrated probabilities. Aimed at mod authors who need probabilistic decisions inside Claude Code.

How it uses Jev

A mod calls `$.jev.ask` with a `state` and typed `questions` (Choice, Score, Noul). Jev returns calibrated probabilities in `answers`; the mod branches on them, e.g. denying a command when `answers.destructive.noul > 0.9`. Answers are validated against their question before return.

Primitives:choicescorenoul

Technique worth stealing

Validate each returned answer against its question before handing it to the caller.

Try it

/plugin install jev --marketplace gecm0/jev-mod

View on GitHub

Start using Jev: API key and your first request →

Model judgments from README excerpts

Project signals use repository metadata, an existing summary and the first 700 README characters, not the full project. “Not found” means not detected in that material; it does not establish absence. These are the original judgments with recorded models and dates, not source audits or run results.

Models & evaluation dates

Inclusion gate
jev-1.13.0
Project signals
jev-1.13.0
Category
jev-1.13.0
Pattern tags
jev-1.13.0

Evidence

These signals use repository metadata, an existing summary and at most 700 cleaned README characters. ≥ 0.60 means reported in that excerpt; ≤ 0.40 means not found there. The middle band is inconclusive. None is a source-code audit or a test result. The runnable-tool question excludes research experiments; the recommendation question asks for a learning shortlist, not a quality verdict.

  • Jev is core to the projectFound in material0.94
  • Shows a System One patternFound in material0.80
  • Describes handling uncertaintyunclear0.51
  • Reports measured numbersnot found in the excerpt0.12
  • Is a runnable toolFound in material0.91
  • Top-10 learning shortlist signalunclear0.53
  • Is a replica of the modelnot found in the excerpt0.03
  • Solves a common problem (0–2)score on a 0–2 scale1.05 / 2
  • About JevFound in material0.98
Signals
Jev is core to the project0.94Shows a System One pattern0.80Describes handling uncertainty0.51Reports measured numbers0.12Is a runnable tool0.91Top-10 learning shortlist signal0.53Is a replica of the model0.0300.51Solves a common problem (0–2)1.05 / 2012

no-judgment band (0.40–0.60)

Design patterns
Inspection0.83Questionnaire0.77Fail open, fail closed0.3800.51

no-judgment band (0.40–0.60)

The Jev model and date for each judgment stage are listed above. Card written by DeepSeek V4.1 Flash from the README on 11 Oct 2026.