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jev-gate

eugeniughelbur/jev-gate · Homepage

Safety gate for AI coding agents, backed by TypeSafe's Jev.

Automated README summary

Automatically summarized from the README on 20 Sept 2026; not a run by jevbooks. Run instructions and author-reported outcomes still need verification.

What it is

A tool-call gate for Claude Code, Codex, Cursor and other AI coding agents. It answers allow, ask or deny in about 400 milliseconds for two hundredths of a cent, so every action can be checked instead of approving everything or nothing.

How it uses Jev

Jev answers two typed questions in parallel about the proposed tool call, returning a destructive probability and confidence. The gate compares these to thresholds to produce allow, ask or deny. Hard rules and a read-only allowlist run before Jev.

Primitives:score

Technique worth stealing

Hard rules run before the model, because the model was least reliable where a regex is easiest to write.

Try it

claude plugin marketplace add eugeniughelbur/jev-gate; claude plugin install jev-gate@jev-gate

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 material0.89
  • Shows a System One patternFound in material0.79
  • Describes handling uncertaintynot found in the excerpt0.13
  • Reports measured numbersFound in material0.69
  • Is a runnable toolFound in material0.93
  • Top-10 learning shortlist signalnot found in the excerpt0.32
  • Is a replica of the modelnot found in the excerpt0.05
  • Solves a common problem (0–2)score on a 0–2 scale1.74 / 2
  • About JevFound in material0.98
Signals
Jev is core to the project0.89Shows a System One pattern0.79Describes handling uncertainty0.13Reports measured numbers0.69Is a runnable tool0.93Top-10 learning shortlist signal0.32Is a replica of the model0.0500.51Solves a common problem (0–2)1.74 / 2012

no-judgment band (0.40–0.60)

Design patterns
Funnel0.98Traffic light0.98Fail open, fail closed0.97Flight recorder0.97Questionnaire0.93Grey zone0.61Check-up0.50Prefetch0.43Scorecard0.40Blind review0.3300.51

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 20 Sept 2026.