The Jev ecosystem

20 open-source projects built with Jev

Jev’s typed, fast judgments have become a building block for browser agents, coding tools, data pipelines and even games. This is a curated directory of third-party open-source projects — each one links to its GitHub repository so you can read the code yourself.

Coding agents & developer tools

Context management, routing, review and search — where fast, cheap judgment pays off.

fast-jev-compaction

★ 5.6k stars

by tamaratran

A Claude Code plugin that replaces compaction summaries with Jev decisions: every tool call is scored in one fast request, stale output is dropped or truncated, and anything kept stays verbatim.

github.com/tamaratran/fast-jev-compaction ↗

jev-codex-router

★ 120 stars

by 0xNatoshi

Per-turn model and reasoning routing for coding agents: Jev judges how hard the current task is, then picks the model tier, thinking depth and speed mode.

github.com/0xNatoshi/jev-codex-router ↗

Winnow

★ 36 stars

by GhalebDweikat

Context garbage collection for Claude Code. When Read/Bash/Grep floods the context window, Jev judges which results actually matter for the task at hand before they enter it.

github.com/GhalebDweikat/winnow ↗

jev-review

★ 430 stars

by devagrawal09

A staged code-review workflow: Jev flags the high-risk changes first, so the expensive model — or a human — only looks at what matters. Ships with a local dashboard.

github.com/devagrawal09/jev-review ↗

Blink

★ 31 stars

by ellipsis-dev

Codebase search and navigation powered by Jev: at each directory level it judges which files are most relevant to your question and keeps drilling down.

github.com/ellipsis-dev/blink ↗

Canny

★ 9 stars

by qkal

Keeps coding agents honest about “done”: it inspects tool output, diffs and test results, and Jev judges whether the completion claim actually holds up.

github.com/qkal/Canny ↗

json-render

★ 16k stars

by vercel-labs

Vercel Labs' generative UI framework. In their experiments, Jev never writes JSON token by token — it selects components, props and layout directly.

github.com/vercel-labs/json-render ↗

MCP integrations

Plug Jev into Claude Code, Claude Desktop, Codex and other MCP clients.

Browser & computer use

Agents that act on browsers and desktops with judgment in the loop.

Data & pipelines

Filtering, scoring and navigating data with typed decisions.

Trading & markets

Decision layers on top of execution — judgment, not order-spraying.

Experiments & fun

Games, drones and idea judges — proof that judgment models go anywhere.

These are independent third-party projects, listed for discoverability. We are not affiliated with the projects or their authors, and listing is not an endorsement or a guarantee of quality or security — review the code before relying on it. Descriptions are ours, written from each project’s own documentation; we deliberately avoid republishing performance claims we cannot verify. Star counts are snapshots from listing time (September 2026).