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Explore the Jev ecosystem.
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Watch & learn
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See an idea take shape. Tutorials, demos, and deep dives, organized by topic and credited to their creators.
Make & explore
Experiments.
See what builders made with Jev. Games, tools, repositories, articles, and more — traced to their sources.
The directory03 / 03 · Experiments
Find something worth exploring.
Every category, from games and tools to repositories and writeups, traced to a primary source.
Same ideas.
Different paths.
This is the full registry, not just the featured picks. Figures like speed, cost, and stars are maker-reported or captured snapshots, not JevMade measurements.
1612 experiments · showing 841–900
A Jev-powered permission gate for the omp coding agent.
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A Pi extension that sends agents back to work when Jev determines they stopped before completing the task.
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from the source
{ "typesafe": { "type": "api_key", "key": "..." }}
A Pi coding coprocessor that uses Jev gates to review changes from the initial baseline and record an append-only activity trail.
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Ask Jev to choose, score or answer yes-or-no questions without leaving a Pi coding session.
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from the source
sidecar=/absolute/path/to/pi-typesafemkdir jev-playgroundcd jev-playgroundgit initpi -e "$sidecar/src/extension.ts"
A Pi extension that exposes five tools for narrow Jev judgments while leaving thresholds and actions in application code.
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noul
Does `ticket_message` request a refund?
A standard-library Python gateway that checks prompts for risk and routes safe requests to a suitable model.
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from the source
client ─► POST /v1/chat/completions │ ├─ 1 Jev call, 4 questions in parallel (questions.py) │ injection? harmful? pii? (Noul each) tier: small | large | uncle... ├─ policy.py (pure code) risk ≥ 0.80 → 403 block · 0.40–0.80 → allow + fla...
An MCP server that exposes Jev's Noul, Choice, and Score judgments as agent tools.
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A Python tool that uses TypeSafe AI to review code diffs.
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A provider-agnostic judgment layer that gates a coding workflow from product requirements through release.
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A five-event browser-use benchmark with one prompt and one shared clock, accompanied by a compact Jev-driven agent.
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from the source
open -na "Google Chrome" --args --remote-debugging-port=9333 --user-data-dir=/tmp/fastlo...echo 'TYPESAFE_API_KEY=...' > ~/.config/typesafe/env # chmod 600node olympics.mjs # full course; registers as "Almond-fastloop"node almond-fastloop.mjs task_booking.json # single task
A local browser automation interface where Jev selects bounded page actions and a text model supplies form values.
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A browser MCP server that uses Jev rather than a generative model to choose actions.
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A Python control loop that combines Jev action choices with Mobile MCP for Android automation.
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A drop-in Playwright MCP wrapper that uses Jev to triage page state, prune snapshots, gate risky actions, and screen prompt injection.
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from the source
claude mcp add jev-playwright --env TYPESAFE_API_KEY=tsk_YOUR_KEY_HERE -- \ node /absolute/path/to/jev-playwright-mcp/cli.js --jev-mode=all --headless
A bounded exploratory browser-testing tool with Jev-guided actions, deterministic assertions, and replayable evidence.
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A Chrome extension that reranks Google results with Jev and collapses sales pages and SEO filler.
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An open-source Chrome extension that uses Jev to filter ads and prose identified as AI-generated.
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A Go browser-automation tool where Jev selects each semantic action.
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from the source
npm install -g @sightmap/jev-turbo # installs the sightmap CLI with itexport TYPESAFE_API_KEY=... # the only key you need
A research tool that checks whether cited papers support the sentences that reference them.
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An alternative X client that uses Jev rules to decide which timeline posts to keep or hide.
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An experimental tool that scores X drafts on viral dimensions while the author writes.
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A Jev-powered emoji autocomplete app designed to keep up with live typing.
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A web interface for classifying text with Jev.
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A proof of concept that uses Jev judgments and FFmpeg to censor selected words in audio with low latency.
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from the source
WAV/audio file -> ASR adapter: words + start/end milliseconds -> parallel Jev evaluations (Boolean profanity probability + Score severity) -> threshold + timestamp padding/merging -> ffmpeg mute/beep overlay
A React and FastAPI application that uses Jev to diagnose CVs and compare them with job requirements.
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from the source
# Backendcd backendcp .env.example .env# Edit .env and set TYPESAFE_API_KEYuv sync
A single-call guardrail API for detecting prompt injection, jailbreaks, data leaks, and unsafe content with Jev.
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A writing tool that uses Jev's feedback to help an AI draft sound more like you.
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A pre-install security gate that uses Jev to inspect npm lifecycle scripts before they run.
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from the source
npm install pkg-gateexport TYPESAFE_API_KEY="ts_..." # get a key at typesafe.ai
Find your way around a codebase with search results and flow diagrams linked to the source.
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Scam Shield checks text messages for signs of fraud with Jev.
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Watch a support call's scorecard update as the transcript arrives.
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from the source
git clone https://github.com/brandonbryant12/transcript-scorecard.gitcd transcript-scorecardcorepack enablepnpm install --frozen-lockfilecp .env.example .env
This Python package grades code comments against a set of practical heuristics.
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Ask Jev which support tickets and alerts need attention, or whether a deployment looks risky.
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from the source
src/triage/ battery.py generic hazard-battery engine (Noul battery + Score + policy -> actio... client.py real TypeSafeClient, or the offline mock -- see below mock.py offline heuristic double for local dev / tests / CI without a key guardrail.py guard(): message-safety battery on top of battery.py
Jev chooses moves for a playable version of Tetris.
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A small browser game challenges players to outguess Jev.
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from the source
npm installnpx wrangler loginnpx wrangler secret put TYPESAFE_API_KEY # required before the first deploynpx wrangler deploy # → https://beatjev.<you>.workers.dev
Jev controls the paddle of a Next.js brick-breaker in real time.
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Play either side of a browser chessboard while Jev chooses the opposing moves from structured board state.
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An endless Three.js cyberpunk arena shooter uses Jev to drive combat decisions.
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from the source
┌───────────────────────────┐ │ TypeSafe AI Jev Model │ │ (or Local RLCD Engine) │ └─────────────┬─────────────┘ │
A game about linking two seemingly unrelated things in as few steps as possible.
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Arrive in a village of Jev-driven characters and earn their trust before nightfall—or try to get away with a lie.
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A hundred AI residents go about their lives in a tiny town, with Jev choosing what each does next.
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from the source
Jev Lab ├── Hundred 100 people, one town └── Jev Shogi human Sente, Jev Gote
Jev Arcade pairs an industrial duel with a neon survival game, both playable against live AI.
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Play tic-tac-toe or Connect Four against Jev while conventional code enforces the rules.
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A terminal tool races through Wikipedia links by asking Jev to rank each possible next page.
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from the source
git clone https://github.com/komikat/jev-bfs.gitcd jev-bfsuv sync --lockeduv run jev-bfs --install-browseruv run python -m unittest discover -s tests -v
A visual lab runs Jev and scripted agents across several games and emulator platforms.
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from the source
uv run jev-games play --game mario --policy scripted --decisions 20uv run jev-games play --game kungfu --policy scripted --decisions 20uv run jev-games play --game doom --policy scripted --decisions 20uv run jev-games play --game mario --policy jev --decisions 10
A MoonBit playground for trying Jev's Choice, Score and Noul question types.
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noul
This message is spam.
Jev plays browser table tennis from structured telemetry and sends its choices through ordinary Chrome inputs.
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Jev plays Snake by reading the board and picking a direction on every tick.
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from the source
snake_game/├── game.py # pure game rules and state transitions├── jev_agent.py # typed Jev adapter├── state.py # game state -> JSON-compatible AI state├── config.py # defaults and environment overrides
Jev plays the Chrome dinosaur runner.
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A playable Tetris asks Jev to choose each piece's rotation and column from the board state.
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Spawn Minecraft bots and give them goals, with a planner choosing the task and Jev handling the immediate actions.
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A cyberpunk game of bluffing your way past a border guard powered by Jev.
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A cooperative platform shooter puts a Jev-controlled partner beside the player.
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Jev plays Atari Pong by answering one movement question per frame without receiving raw coordinates.
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from the source
bridge/pong_bridge.py ALE/Pong-v5 behind a JSON step APIsrc/core.ts arithmetic, wording, the question, the baseline policysrc/jev.ts TypeSafe System One client, one POST, no SDKsrc/bridge.ts HTTP client for the environmentsrc/agent.ts the play loop, emits ticks and never prints
An autonomous agent plays PlayStation 2 games while a live HUD shows Jev's visual telemetry.
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from the source
export TYPESAFE_API_KEY="your_api_key_here"export TYPESAFE_MODEL="jev-latest"export EMULATOR_WINDOW_TITLE="PCSX2"export TARGET_FPS="30"
Jev supplies the decisions for non-player characters living in a simulation of River Oaks, Houston.
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A Jev pilot flies through a Python river shooter inspired by Atari's River Raid.
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from the source
.venv/bin/python -m typesafe_pilot # watch it play in r....venv/bin/python -m typesafe_pilot --lockstep # game waits for eac....venv/bin/python -m typesafe_pilot --headless --frames 3000 # no window, prints....venv/bin/python -m typesafe_pilot --record play.mp4 --seconds 60 # save a video with....venv/bin/python -m typesafe_pilot --human # fly it yourself (n...
A 3D planetary rover sandbox tests autonomous choices made with TypeSafe AI.
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Jev moderates a living-room social-deduction game designed for a shared television.
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Two hundred people try to break an agent's defenses while a defender uses each breach to improve them.
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Jev, briefly
A decision model, not a chatbot.
A chat model generates text token by token and hopes you parse it. Jev never generates a word. Your code sends the state of the world plus typed questions; Jev returns every answer in one parallel pass — typed values with calibrated probabilities and a confidence score your code can trust. About 70–500 ms end to end, $0.042 per million input tokens, output free. Trained with what TypeSafe calls Reinforcement Learning for Calibrated Decisions.
choice Pick one of these.
You define the options. Jev returns the chosen option, a probability for every option, and a confidence. The workhorse of routing, agents, and games — the answer space is always legal, so there is nothing to parse and nothing to hallucinate.
score Rate this on a rubric.
You describe ordered levels — say trivial / normal / critical. Jev returns the level, the probability of each, and a confidence. Scores turn fuzzy judgment (“how severe is this log line?”) into a number-free decision your code can branch on.
noul Is this statement true?
You assert a statement; Jev returns the probability that it is true — a noul. Moderation, verification, guardrails, “does this diff actually fix the bug?”: one question, one calibrated probability.
Official material lives at typesafe.ai and docs.typesafe.ai. JevMade is an independent community registry — not affiliated with or endorsed by TypeSafe AI.
Recurring lessons
Patterns that keep showing up.
One decision per tick
Games, drones, trading bots, and browser agents all converge on the same loop: serialize the state, ask one decisive question, act, repeat. Jev’s latency makes the loop feel instant — the model lives inside the control loop, not outside it.
Confidence as a gate
The answer says what; the confidence says whether to act. The most reliable entries threshold on confidence to route edge cases to a slower model or a human — automation with an honest escape hatch.
Shrink the choice space in code
Makers rarely ask Jev to pick from everything. Local tactics prune 225 gomoku moves to ~40; DOM filters turn a page into an element table; code narrows options, Jev judges within them.
Jev judges, LLMs talk
A recurring split: Jev makes every decision cheaply and instantly, and a small LLM is only invoked when a human-facing string must actually be written. Decision and generation are separate budgets.
Made something with Jev?
Send the link — repo, live demo, post, or video — plus a line on what it does and which primitives it uses. Every entry is verified against its primary source before it ships.
Submit your experiment → hello@JevMade.com