OPEN-SOURCE PROJECT DIRECTORY

Jev project radar

Browse community-built Jev projects, see what they solve and where Jev makes a decision, then open the repository and reviewed source links.

Data imported from AgentBuff Awesome Jev snapshot 2026-09-21 Review method

853open projects

23project categories

587Kcombined GitHub stars

295fixed-source reviews

01 / DIRECTORY

Browse Jev projects

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 25–48 of 853 Some public source has been reviewed; inclusion is not a performance or safety endorsement

jev-desktop

lahfir

025

Browser & OS Action Apache-2.0 source reviewed

An optional Jev skill for agent-desktop that chooses controls and actions from native accessibility data.

JEV · Decision point

Jev selects a target and action and estimates presence and risk; local policy decides whether to execute.

Keeps the full UI tree out of the main Agent context while exposing the selected action.

desktop-ostyped-decisionsaccessibility

vellum-assistant

vellum-ai

026

MCP & Integrations MIT source reviewed

An optional Jev provider in Vellum Assistant sends conversation state and explicit questions to TypeSafe.

JEV · Decision point

Submits state and question bundles to System One and returns structured answers to the Assistant.

Adds choices, probabilities, and scoring to an existing assistant.

mcp-integrationstyped-decisionsagent

kev

jaredpalmer

027

High-Frequency & Simulation Apache-2.0 source reviewed

Tiny Jev-like decision head built atop Qwen2.5-0.5B that can be trained and run locally on Apple Silicon MacBooks.

JEV · Decision point

Attaches a parallel decision head to an open 0.5B model to answer discrete questions directly from token activations.

Runs entirely offline on edge hardware with minimal memory footprint, offering an accessible base for custom judgment modeling.

evaluation-benchmarkstyped-decisions

jevlike

vinnylarouge

028

Evaluation & Observability

Train a small model that chooses among a changing list of text options, one probability per option in a single pass. Includes Doom, chess, and Wikispeedia demos.

BASIC LISTING

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

Open the project link to review its source material and implementation.

celesto

CelestoAI

029

Codebase & Graph Pathfinding Apache-2.0 source reviewed

A Celesto PR-review example prepares sandbox checks and compares a general model with Jev on candidate findings.

JEV · Decision point

Judges whether a finding was introduced by the change, is supported and merits a fix.

Shows execution records and reviewer judgments together.

coding-agentsevaluation-benchmarks

TypeSafe agent skills

typesafe-ai

030

Official

Official agent skill for Claude Code, Codex, and compatible agents: primitives, patterns, and how to structure evaluations.

BASIC LISTING

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

Open the project link to review its source material and implementation.

atomic

bastani-inc

031

Routing & Cost Optimization source reviewed

An optional Jev decision backend in the Atomic coding Agent for bounded structured choices such as routing.

JEV · Decision point

Sends predefined questions to Jev and decodes answers for callers; regular models still generate code.

Separates structured decisions from text-generation interfaces.

coding-agentsllm-routing-cost

ai-cli

vercel-labs

032

MCP & Integrations

Vercel Labs terminal CLI that can run Jev as the evaluation model for its evaluate command.

BASIC LISTING

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

Open the project link to review its source material and implementation.

aiavatarkit

uezo

033

Voice & Conversation Apache-2.0 source reviewed

An optional AIAvatarKit component uses Jev to judge turn endings from speech transcripts.

JEV · Decision point

Assesses utterance completeness and whether the user is likely to continue speaking.

Adds a semantic signal to silence-based turn detection.

voice-conversationtyped-decisions

kody

kentcdodds

034

Data & Search source reviewed

Optional second-stage search: widen the hybrid pool, then Score-rerank candidates with Workers AI typesafe/jev.

JEV · Decision point

Sends a Score question per candidate, reorders and drops low scores; the model id is typesafe/jev.

Attaches Jev rerank to existing MCP search instead of replacing retrieval. License is Fair Source FSL-1.1-ALv2, not OSI open source.

search-retrievalmcp-integrationsclassification-ranking

typesafe-computer-use

awlevin

035

Browser & OS Action MIT source reviewed

Builds candidate actions from OCR and UI state for Jev to control macOS, calling a text model only when writing is needed.

JEV · Decision point

Selects the next step from deterministically extracted controls and actions before desktop execution.

Separates screen reading, action selection, and text generation.

desktop-ostyped-decisionsai-agents

Agent

AgentiLoop

036

Security & Guardrails MIT source reviewed

An optional Jev command-risk advisor inside a native macOS Agent, with a TypeSafeKit client.

JEV · Decision point

Adds a destructive-risk judgment after local shell checks and refuses commands above the configured threshold.

API failures generally allow the command with a warning, so it is not complete system protection.

desktop-ossecurity-guardrailsaccessibility

req_llm

agentjido

037

SDK & Decision Frameworks Apache-2.0 source reviewed

A TypeSafe provider for calling Jev through ReqLLM’s evaluate interface in Elixir.

JEV · Decision point

Sends state and questions, normalizes answers and retains the raw provider response.

Keeps decision evaluation separate from chat generation in Elixir applications.

multilanguage-sdktyped-decisionsai

omg.dev

BennyKok

038

Browser & OS Action MIT source reviewed

An omg.dev mobile testing script can use Jev to read the accessibility tree and choose the next interaction.

JEV · Decision point

Chooses controls and checks completion or blockage before the test runner operates the UI.

Adds choices grounded in current UI state to mobile testing.

desktop-osevaluation-benchmarks

Jev-cu

Sac-Y

039

Browser & OS Action source reviewed

A Codex Computer Use loop sending text candidates to Jev while desktop tools observe and act.

JEV · Decision point

Chooses targets and actions and assesses completion and risk; local policy controls execution or confirmation.

Uses text candidates and starts with a dry run by default.

desktop-oscoding-agentscodex

awesome-jev (yibie)

yibie

040

Community Lists

A curated list of public projects, integrations, and discussions built on Jev — TypeSafe AI's System One model for typed decisions.

BASIC LISTING

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

Open the project link to review its source material and implementation.

foreman

thruwire

041

CLI & Pipelines MIT source reviewed

An independent supervisor loop that reads worker diffs, logs and tests, asks Jev Nouls about stuck / off-track / verify, then applies a Python policy.

JEV · Decision point

AsyncTypeSafeClient.system_one with default jev-latest sends Noul questions for supervision.

Supervision does not write the worker's code. Distinct from cataloged Shifty-Eye-Games/foreman-jev.

coding-agentstyped-decisionscli-git-gates

vexjoy-agent

notque

042

Routing & Cost Optimization MIT source reviewed

An optional Jev routing path that matches VexJoy requests to specialist Agents, skills and workflows.

JEV · Decision point

After deterministic routing guards, Jev judges the remaining candidates and required workflow components.

Keeps repeatable routing rules and model-selected candidates in separate stages.

llm-routing-costmcp-integrationsai

Jev Review

devagrawal09

043

Codebase & Graph Pathfinding MIT source reviewed

Reviews a Git diff or a codebase in stages and displays review leads in a local dashboard.

JEV · Decision point

Judges risk, files, evidence regions, mechanisms and severity before rule-based reviewer routing.

Connects review leads to concrete code for human inspection.

coding-agentsast-code-graphevaluation-benchmarks

awesome-jev-tools

v-modal

044

Community Lists

A curated list of tools built for Jev — TypeSafe AI's System One model for typed decisions.

BASIC LISTING

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

Open the project link to review its source material and implementation.

simple-jev

featherless-ai

045

SDK & Decision Frameworks source reviewed

Adapter turning open LLM endpoints into Jev-compatible classification services without training a separate classifier head.

JEV · Decision point

Extracts log-probabilities of candidate tokens from model vocabulary logits, formatting them into standard Jev responses.

Enables rapid prototyping of Jev-like decision workflows against standard inference servers such as vLLM or Hugging Face.

multilanguage-sdktyped-decisions

awesome-typesafe

AbdelStark

046

Community Lists

Curated list of official resources and community projects for TypeSafe, System One models, and Jev, with a GitHub Pages site.

BASIC LISTING

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

Open the project link to review its source material and implementation.

jev-experiments

dabit3

047

Security & Guardrails source reviewed

A collection of Jev developer-tool experiments, including Commit Sentry for semantic checks on staged diff hunks.

JEV · Decision point

Judges risks such as exposed credentials or destructive changes; local rules warn or block a commit.

Presents risk labels with the corresponding diff before commit.

cli-git-gatessecurity-guardrailscoding-agents

WrongStack

048

Routing & Cost Optimization MIT source reviewed

An optional Jev dispatch classifier for choosing among WrongStack specialist Agents.

JEV · Decision point

Jev evaluates the task against eligible specialists; local dispatch rules use the result.

Makes specialist selection a configurable step in an existing coding Agent.

coding-agentsllm-routing-costagentic-ai