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jev-claude-code

weiping/jev-claude-code

Claude Code plugin using TypeSafe Jev for permissions, output, routing

Automated README summary

Automatically summarized from the README on 30 Sept 2026; not a run by jevbooks. Run instructions and author-reported outcomes still need verification.

What it is

A Claude Code plugin that puts TypeSafe Jev in the agent loop to make Claude Code faster and cheaper. It handles permission gating, output display, project guidance, and subagent routing for Claude Code users.

How it uses Jev

Jev answers typed questions (choice/score/yes-no) with probabilities. The plugin uses these for permission decisions (allow/ask/deny), output display (full/excerpt/hidden), and subagent routing (downgrade to haiku, block duplicates). All thresholds and branches remain in code.

Primitives:choicescorenoul

Technique worth stealing

Shadow mode: log Jev decisions without changing behavior, then enforce after tuning.

Try it

Install via /plugin marketplace add weiping/jev-claude-code, then /plugin install jev@jev-engineering

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 material0.82
  • Shows a System One patternFound in material0.89
  • Describes handling uncertaintynot found in the excerpt0.23
  • Reports measured numbersnot found in the excerpt0.05
  • Is a runnable toolFound in material0.96
  • Top-10 learning shortlist signalunclear0.51
  • Is a replica of the modelnot found in the excerpt0.04
  • Solves a common problem (0–2)score on a 0–2 scale1.41 / 2
  • About JevFound in material0.98
Signals
Jev is core to the project0.82Shows a System One pattern0.89Describes handling uncertainty0.23Reports measured numbers0.05Is a runnable tool0.96Top-10 learning shortlist signal0.51Is a replica of the model0.0400.51Solves a common problem (0–2)1.41 / 2012

no-judgment band (0.40–0.60)

Design patterns
Traffic light0.83Funnel0.79Flight recorder0.59Viewfinder0.40Ghostwriter0.2200.51

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 30 Sept 2026.