---
title: "claude-jev"
description: "Hands the small judgments in a session to TypeSafe's Jev, a System One model that returns typed answers instead of generating text: what kind of request each prompt is, which model tier a subagent needs, whether an edit "
canonical: https://agentpluginsdirectory.com/plugins/claude-jev
last-updated: 2026-10-23
---

# claude-jev
Hands the small judgments in a session to TypeSafe's Jev, a System One model that returns typed answers instead of generating text: what kind of request each prompt is, which model tier a subagent needs, whether an edit breaks a rule already written in your CLAUDE.md or AGENTS.md, and which transcript blocks survive compaction. Kept blocks carry over verbatim: no LLM writes a summary.
- Slug: claude-jev
- Publisher: 0x7067
- Repository: https://github.com/0x7067/claude-jev
- Manifest: plugin.json
- Version: 0.29.2
- License: MIT
- Category (editorial): other
- Skills: 0
- MCP servers: 0
- Stars: 25
- Repository created: 2026-09-18
- Repository last pushed: 2026-10-17
- Publisher type: User
- Listing: https://agentpluginsdirectory.com/plugins/claude-jev
- Schema: https://agent-plugins.org/schemas/1.0.0/plugin.schema.json

## What claude-jev does, in the publisher's words

Stop paying frontier-model prices for small judgments.

A coding agent makes dozens of quick calls every turn. What kind of prompt is this? Does it need tools? Does this edit break a rule in CLAUDE.md? Which turns still matter when the context fills up? This plugin sends those questions to TypeSafe's Jev. Jev is a System One model: it returns typed answers, not text, and it doesn't write code.

What you get:

- Rules that hold. Edits that break your instruction files get blocked with a file:line citation. Re-scoring the same 247 accepted edits at v0.23.0 blocks 23 of them (9.3%); the v0.21.0 run blocked 22 (8.9%), 17 of them under a single repo's own comment-ban rule.
- Compaction in about a second instead of a minute or two. Jev keeps the exact rows that matter instead of writing a summary. Planted user constraints survived 100% of the time.

From the project README, punctuation lightly normalized. Full text: https://raw.githubusercontent.com/0x7067/claude-jev/HEAD/README.md