jev-mode
Claude Code/Codex skills, evals, harnesses/context tools, and learning resources that make it easy to build with Jev, TypeSafe's System One model. All materials pull directly from their canonical cookbooks and documentation.
15 ★ on GitHub
What it is
Skills for Claude Code and Codex, and a study course, for building with Jev, TypeSafe's System One model. In the Ratings folder find the list of rated Jev projects and our eval methodology for user safety and quality.
Getting started
From the README:
claude plugin marketplace add tiffygk/jev-mode
claude plugin install jevaluate@jev-mode
claude plugin install jev-lens@jev-mode
claude plugin install jev-sources@jev-modeWhere the decision sits
jev-mode runs its own weights or its own runtime rather than calling a hosted API, so its decisions do not depend on a vendor being up or on a key being funded. The trade is that the model is now yours to keep current.
How active it is
Created 2026-09-28, last pushed 2026-10-23, 15 stars and 2 forks when we read it on 2026-11-02. Everything in this category is weeks old at most, so a stale push date means something different here than it would on a mature project. Check the repository before you depend on it.
Find out what your data actually supports
We turn your historical decisions into a frozen test set, then tell you which model, which threshold, and how much of it you can safely automate.