Skip to content
JevDirectory.orgTraffic count loading. View site trafficSponsor Us
Patterns

Risk triage

Jev scores a transfer or a claim. Hard rules and a routing matrix in code decide whether to pass, review, or freeze.

All 132 terms
Category
Patterns
Also known as
—
Related terms
4
Directory entries
2
Docs
—
Added
2026-09-28

Definition

jev-guard runs blacklist, sanctions, and a $500k cap before any model call. Jev then answers risk level, pattern, freeze probability, and a route. The route is stored and never executed. Errors degrade to manual review. On 100 synthetic labeled events the rules-only baseline beat the model on accuracy, and the model missed no freeze.

jev-suite uses the same split on video briefs, hiring fit, edit fidelity, and rental claims. No evidence means the check fails closed. The model's suggestion is an input to the matrix, not the action.

Tagspatternssafety

Related terms

Definitions that connect to this one.

Fail closedWhen the model errors, times out, or lacks evidence, the system escalates or blocks instead of allowing the action.EcosystemHuman reviewThe explicit path for uncertain or high-stakes cases: route to a person instead of acting on a low-confidence answer.PatternsConfidence gateA threshold on confidence that decides whether code acts, confirms first, or escalates to a person or a bigger model.Answers & ConfidenceGuardrailScreening messages going into or out of an LLM app with hazard Nouls and severity Scores, then thresholding the probabilities.Patterns

From the directory

jev-guard (exchange triage)
37GitHub stars
A Java gateway that asks Jev four questions about a deposit or withdrawal, then applies a direction-aware routing matrix in code.
Tools & CLIs#community#java#security
Communityklauswg/jev-guardJava
jev-suite
33GitHub stars
Four Java checkers — sponsored video, hiring fit, edit fidelity, and rental listings — that keep thresholds and vetoes in unit-tested code.
Tools & CLIs#community#java#verification
Communityklauswg/jev-suiteJava

From the community

Posts from builders shipping with Jev right now.

Follow @typesafeai

Jev plays Smash Bros. against itself

A keystroke oracle that reads intent in ~100 ms

A second-hand shopping agent

Predictive spreadsheets

nader dabit
nader dabit
Cognition
@dabit3
·

Another crazy @typesafeai Jev example: Predictive spreadsheets Spreadsheets recalculate numbers, not meaning. Jev reads intent. Type "Urgency" at the top of a column and, as you type, it figures out you want each row rated from "no follow-up needed" to "urgent" in ~100 ms.

Watch on X
nader dabit
nader dabit
Cognition
@dabit3

Also have been playing with @typesafeai Jev, insane! So many immediate use cases and new apps are possible. What a time to be a builder! Sharing some experiments here starting with: Keystroke oracle / predictive launcher: Your launcher ranks by aliases, fuzzy match, and

Watch on X
Reply
Read 42 replies

The compaction plugin, in Chinese

梭哈.AI
梭哈.AI
HertzFlow | Mainnet Arc🎲
@SUOHA_AI
·

连 JEV 的联合创始人 @CompleteSkeptic 都亲自下场转发点赞：这是 JEV 正确的打开方式！ 大家在 Claude Code 里写长代码，最恶心的就是上下文一满，系统就卡住 10 秒去写总结小作文 开发者 @tamarajtran 刚刚开源了这个插件：利用 JEV Show more

Watch on X
tamara
tamara
@tamarajtran

found the perfect use case for @typesafeai Jev: instant compaction in 2026, why is compaction still a summarization prompt? Jev can make it instant by scoring every tool call and dropping what’s irrelevant

Watch on X
Reply
Read 238 replies

WTF is Jev, and 9 things people are building

Matt Van Horn
Matt Van Horn
@mvanhorn
·

TL;DR of my new article: WTF is Jev by @typesafeai, and the 9 things people are already building with it. The thesis: 𝗮 𝗰𝗼-𝗰𝗿𝗲𝗮𝘁𝗼𝗿 𝗼𝗳 𝗖𝗵𝗮𝘁𝗚𝗣𝗧 𝘀𝗽𝗲𝗻𝘁 𝘁𝘄𝗼 𝘆𝗲𝗮𝗿𝘀 𝗶𝗻 𝘀𝘁𝗲𝗮𝗹𝘁𝗵 𝗼𝗻 𝗮 𝗺𝗼𝗱𝗲𝗹 𝘁𝗵𝗮𝘁 𝗰𝗮𝗻𝗻𝗼𝘁 𝘄𝗿𝗶𝘁𝗲 𝗮 Show more

Matt Van Horn
Matt Van Horn
@mvanhorn

x.com/i/article/2100…

Reply
Read 46 replies