jev-pruner: Claude Code plugin: trim long Bash output with TypeSafe Jev before the model sees it

by tamaratran · AI Tool · ★ 167

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How to install jev-pruner

git clone https://github.com/tamaratran/jev-pruner.git

Taken from the project's README on GitHub.

Security audit verdict: SAFE · quality 63/100

None of the 42 rules matched — no credential harvesting, no data exfiltration, no curl-pipe-shell installer. Scanned against 42 published rules built on the SlowMist agent-security taxonomy, refreshed every 8 hours.

The quality score combines nine heuristic checks of the repo and its README: completeness, clarity, specificity, examples, structure, agent readiness, step-by-step content, instruction quality and security notes. It rates how well the project explains itself to an agent, not the code.

Quick Facts

Stars167
Forks13
LanguageTypeScript
CategoryAI Tool
LicenseMIT
Quality Score63/100
Open Issues17
Last Updated2026-09-30
Created2026-09-18
Platformsclaude-code, node
Est. Tokens~21k

About jev-pruner

jev-pruner A Claude Code plugin that uses TypeSafe's Jev to trim noisy Bash output after the command runs, but before its result is sent back to the main LLM. This reduces the output carried into later turns without generating a summary. Using Codex? See Codex installation and usage. A hook wraps the Bash tool's result.

Compatible Skills

These tools work well together with jev-pruner for enhanced workflows:

  • jev-mcp — semantic(0.46)+complementary+same_lang+similar_pop+shared_platform (66%)

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How this security grade is produced

Grades come from a rule-based scan built on the SlowMist agent-security taxonomy: 42 published rules, covering credential harvesting, data exfiltration, curl | sh installers and more. It is a first-layer scan, not a manual audit — we say so rather than overstate it.

The scale of the problem is documented independently: Liu et al. (2026), in a study of 31,132 agent skills, report that 26.1% contain security vulnerabilities. Our own full-catalog census is published as a citable open dataset.

Sources & who's responsible:

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