# Awesome Jev

> Everything built on Jev — TypeSafe AI's System One model, the first model that answers with typed judgments and calibrated probabilities instead of prose. Generated from one data file in three languages, maintained by deterministic scripts and a free-AI reviewer.

Canonical source: https://github.com/hdjekuue/awesome-jev
Structured data: https://hdjekuue.github.io/awesome-jev/projects.json
Full export: https://hdjekuue.github.io/awesome-jev/llms-full.txt
Agent skill: https://hdjekuue.github.io/awesome-jev/skill.md
One rule per page: https://hdjekuue.github.io/awesome-jev/c/<slug>.md

## What this is

A curated, automatically refreshed directory of projects built on Jev — the System One
model from TypeSafe AI. Jev takes a state plus typed questions (choice / score / noul),
evaluated in parallel, and returns typed answers with per-option probabilities and a
confidence value. Entries are grouped by rule number, not by who made them.

## When to use this list

Use it when someone asks: what is built on Jev; what Jev SDKs exist for language X; how
people route between models with Jev; how Jev is used for context compaction, tool gating,
code review, browser automation, moderation, reranking or evals; whether there is an
open-weight alternative to the Jev API.

## Stats

- entries: 352 (335 repositories, 17 resources)
- stars tracked: 93 460
- rules (categories): 19
- languages covered: 21
- last refresh: 2026-10-01

## Rules

- [001 · Start Here](https://hdjekuue.github.io/awesome-jev/c/start-here.md) — 16 entries · The spec sheet, the three primitives and the docs — read these before building.
- [011 · Official SDKs & Framework Support](https://hdjekuue.github.io/awesome-jev/c/official.md) — 7 entries · Maintained by TypeSafe AI, plus the frameworks that ship Jev natively.
- [104 · Coding Agents](https://hdjekuue.github.io/awesome-jev/c/coding-agents.md) — 48 entries · Routers, tool gates, reviewers, skills and MCP servers for agent harnesses.
- [118 · Routing & Gateways](https://hdjekuue.github.io/awesome-jev/c/routing.md) — 10 entries · Per-turn model and tool selection, under a hard deadline.
- [131 · Context & Compaction](https://hdjekuue.github.io/awesome-jev/c/context.md) — 6 entries · Decide what stays in the window before the model ever reads it.
- [147 · Code Review & Quality](https://hdjekuue.github.io/awesome-jev/c/code-review.md) — 21 entries · Judges, linters, coverage gates and review dashboards.
- [152 · Browser & Computer Use](https://hdjekuue.github.io/awesome-jev/c/browser.md) — 14 entries · Jev picks the operation and the DOM element; a small LLM only writes the text.
- [158 · Mobile & Desktop Automation](https://hdjekuue.github.io/awesome-jev/c/mobile.md) — 4 entries · Driving phones, IM clients and native UIs without hooking or patching.
- [163 · Search, Reranking & RAG](https://hdjekuue.github.io/awesome-jev/c/search-rag.md) — 13 entries · Query understanding, source selection, reranking and semantic SQL.
- [179 · Safety, Moderation & Verification](https://hdjekuue.github.io/awesome-jev/c/safety.md) — 14 entries · Guardrails, prompt-injection checks, judges that abstain.
- [185 · Data & Ops](https://hdjekuue.github.io/awesome-jev/c/data-ops.md) — 20 entries · Postgres extensions, semantic SQL and telemetry pipelines that call Jev.
- [191 · Applications & Extensions](https://hdjekuue.github.io/awesome-jev/c/apps.md) — 29 entries · End-user tools people actually open every day.
- [205 · SDKs & Community Clients](https://hdjekuue.github.io/awesome-jev/c/clients.md) — 32 entries · Unofficial clients for the languages without a first-party SDK.
- [217 · Command Line](https://hdjekuue.github.io/awesome-jev/c/cli.md) — 14 entries · Call Jev from a shell, no SDK required.
- [223 · Benchmarks, Evals & Calibration](https://hdjekuue.github.io/awesome-jev/c/benchmarks.md) — 27 entries · Measure it before you trust it.
- [229 · Open Models & Replicas](https://hdjekuue.github.io/awesome-jev/c/open-models.md) — 41 entries · Run System One semantics without the vendor — on a 3090 if you like.
- [236 · Games, Robotics & Simulation](https://hdjekuue.github.io/awesome-jev/c/games.md) — 19 entries · Decisions as game mechanics.
- [242 · Finance & Trading](https://hdjekuue.github.io/awesome-jev/c/finance.md) — 5 entries · Scoring financial signals with calibrated probabilities.
- [248 · Playgrounds & Demos](https://hdjekuue.github.io/awesome-jev/c/demos.md) — 12 entries · Try it in thirty seconds.

## Conventions for entries

- Each entry is one public repository or one official page that calls the Jev / System One API.
- Repo entries: name as `owner/repo`, stars and pushed_at refreshed from the GitHub API.
- Star counts are a snapshot, not a ranking claim. Snapshot date: 2026-10-01.
- Archived repositories are marked and kept for reference.