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Jev Guard (Exchange Triage)

A Java gateway that asks Jev four questions about a deposit or withdrawal, then applies a direction-aware routing matrix in code.
Stars
22
Language
Java
License
MIT
Reading time
3 min
Published by
Community
Author
klauswg
Last verified
Sep 2026

About this project

Real-time risk triage gateway for crypto exchange deposits & withdrawals — Jev (TypeSafe System One) as the triage layer, deterministic code as the judge.

Quoted from the project's README. Read the full README.

Highlights

  • Hard rules for blacklist, sanctioned counterparties, and amounts over $500k run before any model call.
  • Jev answers risk level, pattern, freeze probability, and a route that is logged and never executed.
  • Timeouts, 5xx, and 429 degrade to manual review, never to an automatic pass.
  • On 100 author-labeled synthetic events, rules-only accuracy was 68% and the Jev gate was 50%, with zero missed freezes.
  • Route and the composed action agreed on 72% of that set. The README treats the 28% gap as the reason composition stays in code.

Quickstart

bash
mvn spring-boot:run
./demo.sh

Watch out

MIT. Needs JDK 17+. Mock mode runs offline. The calibration set is synthetic and author-labeled. Binds to 127.0.0.1:8080 and is marked demo-only.

Questions about this entry

Short answers drawn from the linked project or page.

Reactions & coverage

Posts, threads, and videos about this entry from around the web.

YouTube: Kubernetes admission control with a decision model, fail-closed.

Hacker News: SafeDep Gryph plus Jev checks for compromised coding-agent behavior.

2 pointsDetecting Compromised AI Coding Agents with Jev and GryphRead the thread on Hacker News

X: Jev and Laya on security queries

X: Testing Jev for prompt injection

From the Jev guides

Original write-ups on what this entry is for.

From the Jev AI model community

Posts from builders shipping with Jev right now.

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