PROJECTS & RESOURCES DIRECTORY

Jev projects and resources

Find a Jev implementation for agent routing, browser actions, coding tools or context compaction. See which decision Jev handles, how it is integrated and whether the source evidence has been reviewed.

Community directory snapshot 2026-09-28 Review method 2026 ecosystem report

1428catalogued records

346source-reviewed entries

74project analysis pages

651Kknown deduplicated stars

The catalog includes 1,334 repository or integration records, 61 article or discussion records and 33 other resources. Repository links resolve to 1,332 unique GitHub repositories; a public link alone does not establish an open-source license.

HOT / 10

Popular Jev projects

Ten widely followed projects spanning browser automation, context compaction, trading, official skills, computer use, review, orchestration, and data.

01 jev-ultrafast ★ 19K 02 fast-jev-compaction ★ 6,653 03 jev-trader ★ 2,240 04 TypeSafe agent skills ★ 2,060 05 agent-desktop ★ 1,604 06 typesafe-computer-use ★ 937 07 Jev Review ★ 586 08 foreman ★ 540 09 hermes-jev-skills ★ 726 10 pg-jev ★ 329

01 / DIRECTORY

Browse Jev projects and resources

Search by project, author, use, or tag, then filter by category or activity. Open project details to see how it uses Jev and review its source links.

Showing 1249–1272 of 1428 Some public source has been reviewed; inclusion is not a performance or safety endorsement

Hollow Creek

Community project

1249

Games & Simulation E0 · catalogued

Village NPCs that judge you each tick, deciding what to do and how they feel, instead of chatting.

BASIC LISTING

This listing includes an overview and project link; a reviewed Jev decision point is not yet available.

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Hook panel A/B tester

Community project

1250

Articles & Threads E0 · catalogued

Near-real-time scoring of TikTok and Instagram hooks against about 100 personas.

BASIC LISTING

This listing includes an overview and project link; a reviewed Jev decision point is not yet available.

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How to Use Jev: A practical guide to TypeSafe's System One model

Prosper Otemuyiwa / Valyu AI

1251

Articles & Threads E2 · source reviewed

A practical Jev guide covering setup, Choice, Score and Noul, five reusable engineering patterns, operational limits and launch-week projects.

JEV · Decision point

Explains how typed questions turn supplied state into bounded decisions, then shows confidence gates, composite scoring, cascades and retrieve-then-judge workflows.

Combines runnable Python and TypeScript examples with concrete failure modes, deployment notes and source-attributed case studies.

tutorialtyped-decisionsconfidence-gates

HTTP API reference

Community project

1252

Official E0 · catalogued

Request and response contract for POST /v1/systemone.

BASIC LISTING

This listing includes an overview and project link; a reviewed Jev decision point is not yet available.

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hunch (steven-shoemaker)

steven-shoemaker

1253

SDK & Decision Frameworks E0 · catalogued

Python library, with a TypeScript port, that turns Jev Choice, Score, and Noul questions into functions over lists and DataFrames: classify, score, check, where, extract, pick, rank, verify.

BASIC LISTING

This listing includes an overview and project link; a reviewed Jev decision point is not yet available.

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I reviewed 287 open-source Jev projects

r/LLMDevs

1254

Articles & Threads E1 · source linked

A review of 287 open-source Jev repositories that narrows the field to 20 projects useful for understanding the model and its engineering patterns.

JEV · Decision point

Filters projects by code completeness, explanatory quality and real decision points rather than star count alone.

Adds a human-curated perspective that helps readers avoid repetitive or thin repositories.

researchecosystemcuration

Internal classifier field note

Community project

1255

Articles & Threads E0 · catalogued

Matched-precision comparison against a private fine-tuned classifier.

BASIC LISTING

This listing includes an overview and project link; a reviewed Jev decision point is not yet available.

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Introducing System One Models and Jev

Community project

1256

Official E0 · catalogued

Launch post: architecture, RLCD training, pricing, Doom and Wikiracing demos, FAQ.

BASIC LISTING

This listing includes an overview and project link; a reviewed Jev decision point is not yet available.

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Jev + Opus: separate decisions from generation

Gipp (@gippp69)

1257

Articles & Threads E2 · source reviewed

An engineering thread on dividing work between Jev and Opus: Jev surrounds an agent as the routing, context-retention, repetition-detection and risky-tool gating layer, while Opus continues to plan, write, code and synthesize.

JEV · Decision point

The key split is not small versus large models, but which calls require generation at all: open-ended generation stays with Opus while bounded, repeated judgments move to Jev.

Offers a concise control-layer framing for why agent latency and cost should not scale with every small workflow fork, useful when designing model routing and tool guardrails.

agent-architecturemodel-routingcontext-pruning

Jev 1.13 jaggedness

Community project

1258

Official E0 · catalogued

Known failure modes of the current public model, documented by TypeSafe.

BASIC LISTING

This listing includes an overview and project link; a reviewed Jev decision point is not yet available.

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Jev Arcade

Community project

1259

Games & Simulation E0 · catalogued

Krunker-style 1v1 FPS where Jev decides move, aim, ADS, fire, and jump at about 9 Hz.

BASIC LISTING

This listing includes an overview and project link; a reviewed Jev decision point is not yet available.

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Jev as an agent safety monitor

Community project

1260

Articles & Threads E0 · catalogued

Test report using Jev to check each agent action first: most attacks caught, almost no false blocks.

BASIC LISTING

This listing includes an overview and project link; a reviewed Jev decision point is not yet available.

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Jev board games

Community project

1261

Games & Simulation E0 · catalogued

Playable board games driven by Jev decisions.

BASIC LISTING

This listing includes an overview and project link; a reviewed Jev decision point is not yet available.

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Jev Classifier

Community project

1262

Domain & Vertical Tools E0 · catalogued

Local Telegram channel JSON analyzer for intent, quality, sentiment, and speaker tone.

BASIC LISTING

This listing includes an overview and project link; a reviewed Jev decision point is not yet available.

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Jev Engineering: 10 steps to make your agent brain faster

Carnage (@0xCarnagee)

1263

Articles & Threads E2 · source reviewed

A ten-step Jev engineering guide covering LangChain setup, Noul/Choice/Score, batched questions, model routing, tool guardrails, confidence gates and migration order.

JEV · Decision point

Recommends instrumenting agent calls, separating writing from judgment, migrating high-volume routing, classification and safety checks first, and batching questions about the same state.

Provides a continuous path from the first runnable call to production confidence policy, useful as a practical checklist for an agent control layer.

tutoriallangchainagent-routing

Jev Gamecast

narulaskaran

1264

Demos & Playgrounds E0 · catalogued

Jev Gamecast: replay-first React app that asks Jev typed questions about live sports data.

BASIC LISTING

This listing includes an overview and project link; a reviewed Jev decision point is not yet available.

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Jev gomoku harness

Community project

1265

Articles & Threads E0 · catalogued

Local tactics shrink 225 moves to about 40 candidates, then Jev picks among tiered options.

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This listing includes an overview and project link; a reviewed Jev decision point is not yet available.

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Jev in 34 seconds

Community project

1266

Articles & Threads E0 · catalogued

Short video explainer of how Jev's typed-decision loop works.

BASIC LISTING

This listing includes an overview and project link; a reviewed Jev decision point is not yet available.

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Jev in a Grammarly-style Mac app

Community project

1267

Articles & Threads E0 · catalogued

Desktop writing app using Jev for fast structured writing judgments.

BASIC LISTING

This listing includes an overview and project link; a reviewed Jev decision point is not yet available.

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Jev in Search: Three Practical Evaluations

Community project

1268

Articles & Threads E0 · catalogued

Independent experiments on search stopping, memory reranking, and multi-hop relation selection, with implementation links and limitations including private data, unequal sample counts, and a simulated speed illustration.

BASIC LISTING

This listing includes an overview and project link; a reviewed Jev decision point is not yet available.

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Jev mood demo

Community project

1269

Demos & Playgrounds E0 · catalogued

Talk nicely or nastily over time; structured state tracks the mood.

BASIC LISTING

This listing includes an overview and project link; a reviewed Jev decision point is not yet available.

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Jev on Vercel AI Gateway

Community project

1270

MCP & Integrations E0 · catalogued

Hosted typesafe-ai/jev for AI SDK evaluate calls, no TypeSafe waitlist required.

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This listing includes an overview and project link; a reviewed Jev decision point is not yet available.

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Jev Pac-Man

Community project

1271

Games & Simulation E0 · catalogued

The maze as JSON; Jev picks the turn at each junction in real time.

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Jev plays Minecraft (r/accelerate)

Community project

1272

Articles & Threads E0 · catalogued

Work-in-progress demo of Jev driving Minecraft, including fleeing zombies at night.

BASIC LISTING

This listing includes an overview and project link; a reviewed Jev decision point is not yet available.

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