typesafe-mario
Agent that plays Super Mario Bros. by feeding structured emulator state to Jev and acting on the returned controller action.
ProjectReal-time control
Examples built on System One models (page 2 of 16)
Entries 49 to 96 of 743, in the hub's default order. The introduction is on page 1.
All entries
Showing 49 to 96 of 743
mobile-jev
Standalone Android agent for Mobilerun where Jev makes every action decision, with a React studio UI and an Uber booking demo.
droidrunOpenmobile-jev on github.com377 starsUber demo ~21s, 9 actions
jev-router (gargpratyush)
Automatic per-turn model routing for Claude Code and OpenAI Codex. Jev sends simple work to the fast model tier and difficult work to the strong tier while preserving each CLI's native tools, sessions, permissions and authentication.
@receptron/laya
Node.js and TypeScript package that runs the Laya decision model through ONNX Runtime, so JavaScript projects can call it without Python.
receptronOpen@receptron/laya on github.com374 stars3-question call ~140 msModel size ~1.7 GB
Tool
decider: one-pass typed decisions with calibrated probabilities (Qwen3.5-2B)
Open reproduction of the System One model class, fine-tuned from Qwen3.5-2B-Base, returning a probability distribution per typed question in a single forward pass. Serves TypeSafe's POST /v1/systemone wire format so TypeSafe SDKs work unchanged by repointing TYPESAFE_BASE_URL.
AnotiaWang/awesome-jev
Curated list of Jev / TypeSafe System One applications, libraries and resources.
Listpg-jev
PostgreSQL extension that lets you filter, rank and classify rows with plain-language conditions, such as WHERE jev(tickets, 'the customer is angry'). Adds jev_prob, jev_choice and jev_score functions that compose with joins, GROUP BY and ORDER BY, with no index or embeddings. Published on PGXN.
realZachiOpenpg-jev on github.com329 stars2k rows, cold ~3.5s, $0.0122k rows, cached ~50ms
ekzhang/openjev-sglang
Prefill-only server that implements the TypeSafe Jev HTTP API on open models, running Qwen3.6-35B-A3B on SGLang. Deploys to Modal on a B200 with radix caching and breakable prefill CUDA graphs, scaling to zero after five idle minutes.
Alternativeitsmostafa/typesafe-mcp
MCP server for TypeSafe shipped as a single static Go binary with no Node or Python runtime. Sends usage guidance to the client so the agent writes better questions.
system-one-adapter-python (LLM-backed TypeSafeClient drop-in)
Official drop-in replacement for TypeSafeClient that sends the same typed questions to ordinary LLM APIs, so developers can compare Jev against an LLM on cost, speed and answers.
Toolsutro-sh/jev-align
A CLI from Sutro for building AI functions with Jev: it finds uncertain examples, has you label them, and uses GEPA to improve the function.
Tool
Heman10x-NGU/openJev-verdict-2.0
A 151M-parameter non-autoregressive decision model, inspired by Jev's approach but trained independently, evaluated on the LocalLLaMA typed-decisions benchmark at 77.10% accuracy, 0.0636 Brier score and 0.0144 expected calibration error.
Alternativemoritzkremb/jev-voice-browser
Streams speech word by word from the browser's Web Speech API to a Node server, which asks Jev about a dozen typed questions per partial transcript, such as intent, target element and whether the command is complete, and decides whether to act before the sentence finishes.
271 starsDecision latency ~250-350 msCost per call ~$0.0002
ProjectReal-time control
OmniJev/awesome-jev-gallery
Papers, open reproductions and independent evaluations behind System One models and Jev, rather than a tools directory.
270 starsEntries 142Open reproductions 39
List
hr98w/jev-visual
Educational Jev-like visual inference on Apple Silicon: Qwen3.5-0.8B under MLX answers several questions about one image by reusing shared multimodal context and scoring candidates from logits. Ships a browser UI, CLI, HTTP API and sorting-factory, Breakout and camera-gesture demos.
AlternativeReal-time control0xNatoshi/jev-codex-router
Per-call model routing for Codex: Jev answers four choice questions to pick the model tier and thinking depth, so the cheapest sufficient model serves each call. A 7-day replay of 237 real turns measured about 60% savings against always using Astra, under an older policy.
262 starsHistorical replay ~-60% cost
jkudish/jev-browser
Browser-use tool driving a real headless browser through an MCP server, CLI or library, with Jev choosing the actions. Returns text, markdown, HTML or accessibility-tree output plus traces and screenshots.
256 starsWikipedia nav ~4s, $0.0016
kitze/skillbox
Self-hosted, versioned skills library for AI agents. Serves skills over MCP with scoped clients, and adds optional Jev recommendations for which skill to reach for.
typesafe-sdk-js (official TypeScript/JavaScript SDK)
Official TypeScript/JavaScript client published to npm as @typesafe-ai/sdk (v0.6.0), requiring Node.js 20+ and shipping ESM, CommonJS and type declarations.
ToolUnclutter: a Jev browser extension that hides clutter
Unclutter is a WXT browser extension that removes page clutter using Jev decisions, with reusable template rules per site.
Projecttypesafe-sdk-python (official Python SDK)
Official Python client for the TypeSafe System One API, published to PyPI as typesafe-sdk with sync (TypeSafeClient) and async (AsyncTypeSafeClient) clients.
ToolNiazMorshed2007/jev-review
Local-first MCP plugin giving Claude Code, Codex, Cursor and OpenCode structured code-quality scores (correctness, complexity, modularity, security) while they work. Sends focused diffs to Jev and keeps keys and code local.
CLM: Contrastive Language Models
Open System One model that scores states against actions with a contrastive objective, serving CLM-8B behind a TypeSafe-compatible API. The authors report Jev-level results on computer-use, gaming and tool-calling with up to 9x lower latency, plus scaling laws and a fine-tuning guide.
Jacky Kwok (@jackyk02)OpenCLM: Contrastive Language Models on github.com215 starsvs Jev latency up to 9x fasterDeepSWE (tuned) 81.6%
Tool
usenotra/notra
Generative engine optimization platform that tracks brand mentions across ChatGPT, Claude, Gemini and Perplexity. Jev runs its chat router, GEO judge and feedback classifier by default, with LLM fallbacks; the NOTRA_JEV_CLASSIFIERS setting turns it off.
coldteadotai/abide
Open source tool that scores every turn a coding agent takes against project rules that can't be codified into a linter, using Jev, then tells the agent what to fix.
Ohans Emmanuel (@OhansEmmanuel)Opencoldteadotai/abide on github.com211 starsRule breaks 1 in 13 turnsPer check ~300 ms
fatwang2/awesome-jev
A directory of open-source projects built with TypeSafe Jev. Submissions are reviewed and categorized by the Jev Review Action, a Jev-only GitHub Action.
204 starsListed projects 163
List
kunchenguid/compact-adviser
A Claude Code and pi plugin that uses Jev to judge whether a session has reached a safe point to run /compact, in a hint mode or a fully automatic mode.
Kun Chen (@kunchenguid)Openkunchenguid/compact-adviser on github.com183 starsEval set 40 sessionsHint floor (empty) 0.90
hellogumbo/awesome-jev
Community directory of projects built on Jev, backed by a data/projects.json file; the README listed 990 entries as of 2026-09-23.
hellogumboOpenhellogumbo/awesome-jev on github.com179 starsProjects listed 990
List
jev-drone
Camera-only autonomous drone simulated in MuJoCo with Jev in the control loop at 2.5 Hz.
RomanSlackOpenjev-drone on github.com164 starsCalls per flight ~110Decision rate ~2.5 Hz
ProjectReal-time control
FluidUse
A Swift package for local computer use on Apple Silicon that reads a form through the Accessibility API and asks a small on-device model what belongs in each field. Its Laya integration runs FluidInference's Core ML port of Laya on the Neural Engine at 3.7 ms per decision on an M5 Pro, about seven times faster than the upstream GPU figure.
FluidInferenceOpenFluidUse on github.com152 starsPer decision 3.7msSpeedup ~7x faster
ProjectTyped tool dispatch
AIBackends
An AI API server that abstracts multiple models and providers behind one layer, for local use with Ollama or LM Studio or in the cloud via OpenRouter, OpenAI, Anthropic or Google. It now supports Jev.
Laya Ultrafast
A local, open-weight port of browser-use's jev-ultrafast agent that swaps Jev's hosted decisions for Laya running on Apple Silicon through MLX, while keeping the original hosted Jev policy as a fallback mode.
ipenywisOpenLaya Ultrafast on github.com145 starsDecision latency ~33ms
ProjectTyped tool dispatchy0usaf/pi-jev
Extension making Jev the decision layer for the Pi coding agent: a measured tool-call gate plus a jev_ask tool. Judges whether an action is destructive, exfiltrates data or exceeds scope, then blocks or warns on calibrated thresholds.
144 starsGate latency ~300ms
tamaratran/jev-pruner
A Claude Code plugin that uses Jev to trim noisy Bash output after a command runs but before the result reaches the main model, once the output passes an estimated token threshold.
Tool
pi-warden
Guardrails for the Pi agent built on pi-typesafe. Jev judges irreversible and off-task tool calls, detects stuck loops, checks unverified completion claims and flags low-quality output, steering the agent rather than interrupting the user.
DevMortimerOpenpi-warden on github.com138 starsHolds per 1000 calls 3
uehaj/jev-semgrep
A grep that matches lines by meaning instead of regular expressions: Jev scores each line against a plain-language description and the tool applies a threshold, combining meanings with AND, OR and NOT.
134 starsBatch speed <1s/210 lines
kshetrajna12/reflex
An open re-creation of Jev built on Qwen3.5-4B that you run on your own GPU. It takes a state and a list of fixed-option questions and answers all of them at once with a probability per option, never free text.
Alternativedbreunig/building-with-jev-skill
An Agent Skill that guides a coding agent through writing and improving programs that call Jev.
Cookbook
maxim-saplin/llm_chess
A benchmark that has language models play chess against a random-move player and the Komodo Dragon engine, scoring both chess skill and whether the model keeps making legal moves without hallucinating.
Tooljexp/neo4jev
Navigates a Neo4j graph one hop at a time: the outgoing relationships of each node become Choice options and Jev returns a distribution over which to follow, with a Noul question about reaching the goal riding in the same call. Top-k over summed log-probabilities makes it a beam search, drawn in an interactive graph.
ProjectSiliconLabAI/OpenJev
An open-source decision engine inspired by Jev: give it state and typed questions and it scores each option independently, then normalizes the scores into a probability distribution, using any OpenAI-compatible provider key instead of TypeSafe's API.
AlternativeDicklesworthstone/skillranker
Rust CLI that hands an agent's live session context to Jev, which compares the available skills and estimates which fit the next step. Ships Claude Code hooks, structured JSON, abstention, a terminal display and local feedback.
devagrawal09/stanley-code
Command-line toolkit a coding agent can delegate judgment work to: ranking relevant files, checking a diff against its task and project rules, and triaging test failures or review comments. Each request runs one bounded typed workflow and returns a structured report.
supercorp-ai/supercov
Scores source-file quality by asking Jev a set of yes/no questions, runs the test command you already use, and turns uncovered paths into small queries a coding agent can work through. Scoring costs about a cent per megabyte of source; coverage needs no account, config file or hosted service.
supercorp-aiOpensupercorp-ai/supercov on github.com109 starsScoring cost ~1c/MB
mrnugget/jev-shell-history
Fish-style autosuggestions for zsh ranked by Jev. As you type, the plugin sends your last 100 distinct history entries and asks which one you are most likely completing, then shows the best match in grey with its score for you to accept.
open-jev: one-pass option scoring with local models
Independent reimplementation inspired by jevlike that scores pre-written options in one batched forward pass by log-probability over a local Gemma 3 4B, shipping an HTTP server, CLI and a TypeSafe System One API implementation.
jev-eval-agent
Personal-assistant agent built with Vercel's eve framework and 100 mocked tools, served through OpenRouter. Measures how many steps the agent needs when the LLM picks the tool itself versus when Jev picks it via a 101-option Choice.
agent-labs-dev/fastbrowse
Browser agent that indexes the page into candidate actions and has Jev pick one, so it cannot click something that was never on the page, while an LLM plans and reads. Every claim in an answer cites a quote stored verbatim from the page, and Jev checks the claim against its quote.
agent-labs-devOpenagent-labs-dev/fastbrowse on github.com100 starsSuite cost $0.36Checkout ratio 195x
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