Jevify

Use Jev as System One to save the user reasoning-model tokens, time, and cost on bulk reading or repeated semantic decisions. Trigger when sifting large documents or tool outputs, selecting evidence or actions from many candidates, or checking many items against criteria, even if the user never mentions Jev. Also use for "Jevify this", Jev question design, and product work where frequent, inexpensive judgments could improve the experience.

47 stars 3 forksAI, LLMs & Agents

Install

skills CLI (Claude Code, Cursor, Codex and more)

npx skills add altryne/jevify --skill jevify

Manual install

git clone --depth 1 https://github.com/altryne/jevify.git /tmp/jevify
mkdir -p ~/.claude/skills
cp -r /tmp/jevify/. ~/.claude/skills/jevify

Personal skills live in ~/.claude/skills. Use .claude/skills in a project folder to share a skill with your team.

From the SKILL.md

# Jevify

Use System One during your own work. Think of Jev as a semantic condition that code can use in an `if` or branch. Its typed answers are probabilistic judgments, not deterministic rules or exact parsing. Jev can select, check, and score supplied text cheaply and quickly; you handle reasoning, synthesis, and the user's final result. Reach for it before loading a large collection into your context or repeating the same semantic judgment across many items.

## Why this changes how you work

Jev 1.13 costs **$0.042 per million input tokens**, with free output, as verified September 21, 2026. A 10,000-token request costs about **$0.00042**. These are input-cost calculations, not per-judgment prices. State is billed once per request, and each question adds tokens. Independent questions in a request run in parallel. Ask the useful questions together.

TypeSafe [reports](https://docs.typesafe.ai/concepts/how-to-build-with-system-one) roughly 100 ms for many queries. The opportunity includes more frequent checks, larger candidate pools, and interactive decisions that would be impractical with repeated reasoning-model calls.

Read the full skill on GitHub

Details

Skill name: jevify
Repository: altryne/jevify
License: MIT
Repo updated: 26 September 2026

FAQ

What does the Jevify skill do?

How do I install the Jevify skill?

skills CLI (Claude Code, Cursor, Codex and more): npx skills add altryne/jevify --skill jevify. Skills go in ~/.claude/skills (personal) or .claude/skills (project), and Claude loads them automatically when a task matches the description.

Is Jevify popular?

It lives in altryne/jevify, which has 47 GitHub stars and 3 forks.

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