What people replaced with Jev, and everything they're shipping with it.
Real projects, with the numbers to prove it. Open one to see how it was built.
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Projects
1356 projects
jev-guard
Security classifier for coding-agent tool calls, rebuilt on Jev instead of a chat model.
See how it was built- Replaces
- Claude Haiku 4.5 (as a tool-call classifier)
- Against the baseline
- 3.4x faster, 28x cheaper vs Haiku 4.5
- Cost signal
- author reports 28x cheaper for the same tool-call classification task (unverified)
openjev-sglang
Open-source, Jev-compatible API that mimics Jev's fast parallel typed-decision behavior on an open model.
JevNQL
A query language and engine that mixes arithmetic and judgment in one query, such as the biggest spenders who seem increasingly unhappy about pricing. The arithmetic runs in Apache DataFusion and only the judgments go to Jev. Plain-English questions are turned into queries first.
Browser Use + Jev Ultrafast
Open-source browser agent that found a real Google Flights result (Zurich to London) in 7.1s for $0.0039.
Jev Trader
Trading bot that decides buy/sell on a live price feed and executes real on-chain trades on Monad via Kuru's order book, one decision every ~300ms block.
pkg-gate
Pre-install security gate for npm packages that screens for malicious lifecycle scripts.
The LazyIDE
Desktop AI IDE that uses Jev to route work to the right coding bot instead of guessing, and to triage incoming noise on wakeup.
is-jeven
Novelty npm library that checks whether a number is even by asking Jev.
@adaptive-ds/jev
Gives TypeScript developers a client library and a jev command-line tool for TypeSafe System One. Calls return Results instead of throwing errors.
@nu-sync/effect-evaluation
An Effect-native TypeScript client for TypeSafe System One models. It has typed failures and test layers.
@underactive/jev-shim
Gives Node.js apps typed Jev classifiers and an OpenAI-compatible chat-completions facade.
@y0usaf/typesafe-mcp
An MCP server that gives coding agents access to Jev.
15-min BTC JAP
Trades Kalshi's 15-minute BTC YES/NO market from live Coinbase data, with at most one $2 order per window.
1v1 Jev
Runs a browser FPS where players fight an AI opponent in 1v1 matches to 5 kills, while spectators watch.
2048
Runs the 2048 game in Python with a browser UI where you can watch an AI player choose moves.
A hundred faces
Shows a wall of one hundred invented people who react to a message while you type it.
a0-typesafe-ai
Adds typed Jev tools and probability cards to the Agent Zero chat as a community plugin.
A3M Router
Adds a remote backend for Jev-compatible endpoints to a deprecated LLM router.
Abide
Makes Claude Code, Codex, and opencode agents follow the rules in AGENTS.md and CLAUDE.md. It tells the agent which rule it broke so it fixes it.
ActionJev
Code review for GitHub Actions and Gitea Actions, written in Rust. It posts a PR summary and writes JSON and Markdown reports.
actionreflex
Checks each AI agent action before it runs. It is a Python gate that you put in front of tool execution.
adjudge
Blocks ads without a filter list. It is a Chrome extension.
Advocaat
A small TypeScript client that asks Jev questions about your data in one request.
AegisCortex
Runs a local studio for a speculative AI control plane that handles routing, as a FinOps workbench.
Agent Action Guardrail
Checks proposed AI agent actions before they run and returns ALLOW, REVIEW, or BLOCK.
Agent Guard
Checks actions before tools run in Codex, Claude Code, or Devin CLI. You set the rules in plain language.
Agent Switchboard
Adds action gates and decision routing to AI agent harnesses, with paired cost and reliability evaluations.
Agent-Gantry
Adds a JevSelector to a Python library that finds and runs the right tools for LLM agents.
agent-gate-loop
A GitHub Action where an AI agent turns an issue into a pull request. A gate checks the change before a human sees it.
agent-guard
Checks Claude Code tool calls, such as Bash commands and file edits, before they run.
Agent-JEV-Tetris
Tetris where Jev chooses every move and the game code does the math.
agent-workflow-typesafe
An external Agent-Workflow plugin that adds optional, advisory Jev evidence to bounded decisions.
AgentArena
Runs an experimental protocol where AI agents play games on the Arc blockchain for USDC stakes.
AgentGhost
Intent-aware authorization for AI agent tools. It wraps tool execution, so each consequential action passes a check before it runs.
AgentKB
A personal, local-first memory system for coding agents. It uses Jev to triage demand signals.
agentOS
Runs an agent-first Linux operating system as a Debian ARM64 virtual machine with a tiling terminal.
AI Backends
Adds a /api/evaluate decision endpoint to a self-hosted API server for common AI tasks.
AI CLI Launcher
Launches AI coding CLIs such as Claude, Codex, and Gemini with preset flags from one menu.
AI Column
Adds AI columns that need human judgment to an uploaded CSV. You review unsure rows and export the result.
AI Elo Ranker
Ranks texts such as poems, pitches, and cold emails in an Elo tournament with Swiss matchmaking and a live dashboard.
AI Fraud Control Room
Next.js demo that compares Jev with a Claude prompt-and-parse path on the same fictional payments.
AI News Aggregator
Adds a Jev adapter to the relevance step of a multi-agent pipeline that publishes daily AI news briefings.
AI Pentest Workbench
An Electron browser controlled by a JSON CLI for LLM-assisted, authorized web security testing.
AI Provider for Jev
Connects WordPress to Jev as a plugin for structured decisions.
ai-hedge-fund
Adds Jev as a model provider in an educational AI hedge fund proof of concept. The project makes no real trades.
Ailerix
Routes each model request to a provider through one public slug, ailerix/auto, as an OpenRouter alternative.
AiWrangler
Checks the plans and diffs of a coding agent against the project documents. Deterministic checks run first, offline.
Almond-fastloop
Browser computer-use loop from Almond, plus the Browser Use Olympics benchmark it is measured on.
Android Control
Lets AI assistants control Android devices over ADB through an MCP server.