Jev – A curation of Jev demos on X, tools, skills, and integrations

From an interesting demo to code you can actually understand.

A curated starting point for TypeSafe Jev: reviewed projects, reusable skills, small code examples, and creator demos from X, GitHub, and YouTube.

33 reviewed picks — start with the source-reviewed selection, not the raw index.

Browse reviewed picks · Freshness and link health

Evidence legend: Reviewed = primary source inspected · Indexed = community listing · Auto-discovered = README keyword match. These labels are not security certifications.

_{Last discovery: 2026-09-22T13:30:23Z (UTC). Latest repository metadata date: 2026-09-22. Unavailable repositories at last check: 13. Coverage, failures and run receipts.}

Navigate: Quick start · Choose a path · CUA & drivers · Reviewed picks · OpenRouter winners · Watch demos · Search the catalog · Contribute

Source-reviewed does not mean security-audited. Keep credentials private and inspect permissions before running a project.

What is Jev?

Jev is TypeSafe AI's model for answering typed questions about text or JSON: choose an option, estimate whether something is true, or score it against a rubric. Use it for bounded decisions such as routing, ranking, or selecting an agent's next action; use a generative LLM when you need new prose, code, or an open-ended plan. Your application still controls permissions, validation, and execution. Official documentation · Official Python quick-start source.

20-second quick-start

JSON in → one typed decision out. With typesafe-sdk installed and TYPESAFE_API_KEY set, this makes one billable API request:

from typesafe_sdk import Choice, TypeSafeClient

with TypeSafeClient() as client:
    result = client.system_one(
        state={"document": "I was charged twice."},
        questions={"team": Choice(
            instructions="Which team should handle this ticket?",
            criteria={"billing": None, "technical": None, "other": None},
        )},
    )
print(result.choices["team"].choice)  # e.g. billing; actual output can differ

No key yet? Clone this repository and run python3 examples/route_ticket.py to inspect an offline request without making an API call. Setup and next steps · More question packs.

_{Browser Use / @gregpr07. Author recording, not our benchmark. Implementation · More demos and videos.}

Choose your path

Build your first typed classifier → JSON input, a Choice question, and your first response.

Use Jev in an agent → Select observed actions, validate them, and keep a fallback.

Explore a local alternative → Independent implementations, hardware requirements, and important differences.

Computer use and drivers

Computer-use map: integrations, drivers, skills, and local alternatives.

Native/desktop: Cua Driver + jev-use, Jev Cua, and jev-bot. Browser: compare Jev Ultrafast, the smaller browser skill, Jev Browser, and the existing-connection Codex skill in the map.

Keep the layers separate: Jev selects; the driver executes; application code verifies. Browser Harness and Cua Driver are supporting runtimes, not Jev models. CUA-S1-FORMS and Jevlike are independent local-model projects, not official Jev weights. A locally installed agent may still call hosted Jev.

Reviewed picks

These are the editorial selections. Follow a project immediately, or open the full reviewed page for its concrete Jev role, source evidence, review date, and reuse notes.

Start building: TypeSafe JavaScript SDK · TypeSafe Python SDK · Jev Logs · Jevify · Official TypeSafe skill · Skillbox.

Use it in an agent or app: Cua Driver + jev-use · Jev Browser (MCP, CLI, library) · Jev Browser Skill · Jev Browser Use (existing Codex connection) · Jev Cua (Codex/Waku) · Jev Ultrafast · Jev voice browser · jev-bot (@compootor) · TypeSafe computer use (macOS) · Foreman · Jev MCP · jev_search · TypeSafe MCP · tisco · Vibe Domain · Browser Harness (supporting driver) · Home Assistant Jev.

Explore games and creative tools: Jev Chess · Jev Plays Snake · JevAI for XMage · JevPilot · PROMPT FPS / Jev Doom · TypeSafe Mario · Jev Music Playground.

Investigate local alternatives: CUA-S1-FORMS (independent specialist) · Jevlike (independent option scorer) · OpenJev SGLang.

All 33 reviewed picks — with evidence, dates and reuse notes

OpenRouter community winners

OpenRouter's 21 September 2026 showcase named five projects: JevAI for XMage, Jev Chess, tisco, Vibe Domain, and jev_search.

Explore game decisions, transcript search, domain ranking, and two-pass code search. Each winner has its original post and publisher screenshot in the visual gallery, plus source and implementation notes. Three have linked source repositories; the other two are public project pages, not verified open-source releases. “Winner” is OpenRouter's designation, not our ranking or a security certification.

Find a project

On GitHub: open the categorized catalog, choose a heading from its outline, and use Cmd/Ctrl+F for a project, creator, or keyword.

Prefer filters? The local catalog viewer starts with reviewed picks. Search by keyword, then filter by evidence level, category, available code/skill/demo, and license. It runs without dependencies, sign-in, API keys, or a server; the viewer's data is embedded at build time. Browse instructions · Machine-readable catalog.

Why this exists

A compelling clip often leaves the useful questions unanswered: what did Jev decide, where is the implementation, and what can I reuse? This directory connects the original demo to the code and separates inspected sources from the much larger discovery queue. A high raw entry count is not the goal; a shorter path to something useful is.

What belongs here?

A concrete Jev integration, demo, skill, SDK, reusable snippet, tutorial, or clearly labeled independent reproduction—with a traceable primary source and a specific explanation of Jev's role. Generic type-safety libraries, unrelated projects named Jev, unsupported performance claims, and duplicate listings do not belong.

Repositories are deduplicated by canonical owner/name; renamed projects should point to their successor. Maintainers can correct an entry, remove it from the reviewed selection, or exclude it from future imports. Inclusion, deduplication, and removal policy.

Contribute

Suggest a demo or correction with the original creator, a source link, what Jev decides, and any code, skill, or recording. For a PR, edit the relevant JSON source and run python3 scripts/build.py, then python3 -m unittest discover -s tests -v and python3 scripts/build.py --check. Contributor guide.

The four-hour workflow performs bounded discovery and rotating checks; it does not continuously inspect every website. Freshness, unavailable repositories, media errors, and run receipts distinguish actual checks from scheduled intentions.

Safety, licensing, and evidence limits

Source review is not a security audit, successful execution test, benchmark replication, or endorsement. Inspect permissions and outbound data before installing hooks, browser extensions, or agent skills. Keep API credentials private; demos can use paid inference, privileged desktop access, or logged-in browser profiles.

Recordings, illustrations, fixtures, and mock modes are labeled where known. A live-looking dashboard is not evidence of real inference or profitable trading. Independent reproductions are not official Jev weights or proof of equivalent quality.

Missing licenses remain not-checked, not-detected, or NOASSERTION, not assumed permission to reuse. Original code and writing follow the repository's license; imported metadata and linked media retain their original terms. This is an unofficial community directory, not endorsed by TypeSafe AI. Security policy · Attribution.

Watch Jev in action

Original creator media, linked to the implementation. Click a preview to watch the source. Animated GIFs play inline; original GitHub video attachments appear as players below. X and YouTube open on their own platforms.

From X: demos and the original roundup

Browser Use × Jev Ultrafast

Watch a browser choose operations and DOM targets; a separate model writes text.

▶ Watch on X · Code · Source

_{Browser Use · @gregpr07 — Animated author recording. This narrow flight-search demonstration is not a general reliability benchmark.}

Talk to a browser

Partial speech becomes typed intents and observed page targets; Playwright acts.

▶ Watch on X · Code · Source

_{Moritz Kremb · @moritzkremb — Creator post preview when accessible. Keep its browser-control server private; a recording is not a security audit.}

Jev on the Mac desktop

OCR and accessibility observations become choices for desktop actions.

▶ Watch on X · Code · Source

_{@awlevin — Creator post preview when accessible. Screen content may be private; real use needs screen-recording and accessibility permissions.}

An independent agent supervisor

Jev assesses worker progress and verification needs; code decides interventions.

▶ Watch on X · Code · Source

_{Josh Rosen · @JoshARosen — Architectural experiment. Not a replacement for tests, review, or permission checks.}

_{No reliable preview image was returned. The original watch link is retained.}

An order-book decision loop

Typed buy/sell judgments inside a bounded quoting and execution loop.

▶ Watch on X · Code · Source

_{Jarrod Watts · @jarrodwatts — The documented default is mock/dry-run. A dashboard does not prove live inference, profitability, or safe custody.}

The community roundup

The discovery thread that seeded this collection; follow the original creators.

▶ Watch on X · Source

_{Moritz Kremb · @moritzkremb — Roundup image, not a separate working project. This directory does not claim to capture every reply.}

OpenRouter winner: JevAI for XMage

Legal game actions become Jev choices; the hybrid combines XMage search with model judgment.

▶ Watch on X · Code · Source

_{ShiftSad · screenshot published by OpenRouter — Publisher screenshot, not a recording or our test. The reported 11-6-3 result belongs to the hybrid; pruning is off by default. Award announced 2026-09-21.}

OpenRouter winner: Jev Chess

A shared chess game displays Jev probabilities over legal move candidates.

▶ Watch on X · Source

_{sliday · screenshot published by OpenRouter — Publisher screenshot; Source opens the project page. No public repository or code license verified. We did not play a move or reproduce the results. Award announced 2026-09-21.}

OpenRouter winner: tisco

Search spoken content, review transcript matches, and approve clip organization in a terminal.

▶ Watch on X · Code · Source

_{cairodavila · screenshot published by OpenRouter — Publisher screenshot. Jev judges transcripts, not video pixels. Audio uploads, live model calls, and file changes have separate data and approval implications. Award announced 2026-09-21.}

OpenRouter winner: Vibe Domain

Separate candidate availability checks from ranking names against a requested vibe.

▶ Watch on X · Source

_{OB Studio / Oliver · screenshot published by OpenRouter — Publisher screenshot; Source opens the project. The page documents a no-key heuristic mode distinct from live Jev. No public repo verified; recheck availability at a registrar. Award announced 2026-09-21.}

OpenRouter winner: jev_search

Keyword-density code prioritizes files; Jev evaluates passages in two passes.

▶ Watch on X · Code · Source

_{caio0452 · screenshot published by OpenRouter — Publisher screenshot. The author labels the project AI-generated and not for production. Selected source text reaches OpenRouter; no project code was executed here. Award announced 2026-09-21.}

Screenshots, animated demos, and implementation diagrams

Jev Tetris: see the decision

Code enumerates reachable placements; Jev chooses and the board visualizes its preferences.

Open demo / recording · Code · Source

_{thelau — Author UI still. A mock mode also exists; the screenshot alone does not establish live inference.}

A structured code-review dashboard

Follow staged risk checks, evidence selection, and severity judgments in a local UI.

Open demo / recording · Code · Source

_{devagrawal09 — Author dashboard screenshot. Findings are review prompts, not proof of a defect or a security certification.}

Needle: find by meaning

Score source passages and select the relevant sentence without generating a new answer.

Open demo / recording · Code · Source

_{Shubhamsaboo / awesome-llm-apps — Author screenshot of the semantic-find interface. Live requests use Vercel AI Gateway and send selected text.}

How Jevthoven composes

A prompt becomes a musical plan, bounded choices, editable notes, and MIDI.

Open demo / recording · Code · Source

_{cocktailpeanut — Author architecture illustration, not a screenshot or an audio-model result. The full recording appears below.}

Three primitives, made visible

Explore Noul, Choice, and Score through an interactive decision playground.

Open demo / recording · Code · Source

_{davila7 — Explanatory illustration, not an actual response or timing result. Hosted live examples require a key.}

A meaning-based Mac launcher

Local search proposes files and history items; Jev ranks the intended targets.

Open demo / recording · Code · Source

_{dabit3 — Historical author screenshot from the archived experiment. Its README points to a successor; this is not the current UI.}

Semantic shell suggestions

Jev ranks a bounded set of previous commands; the user accepts a suggestion.

Open demo / recording · Code · Source

_{mrnugget — Animated author demo uses fabricated history. Do not send sensitive real shell history without reviewing data handling.}

A browser skill you can read

A recorded Hacker News walkthrough shows observed controls, typed choices, and execution.

Open demo / recording · Code · Source

_{zurfyx — Animated author recording, plus an MP4. A deliberately bounded reference implementation, not a complete browser agent.}

Full recordings — play inline

These are the creators' original GitHub-hosted uploads, not re-encoded copies. A direct watch link is retained for clients that do not render a player.

Abide — checking project rules during an agent session — the recording could not be verified by the latest public-access check. View the creator source.

Jevthoven — from a prompt to editable music

Watch typed musical decisions turn into an editable multitrack composition.

jevthoven-cropped.mp4

Open recording · Repository · Creator source

_{cocktailpeanut — Code renders notes and audio. Fixture/manual modes are distinct from billable live Jev decisions.}

jev-align — improve a decision with human labels

Find uncertain examples, label them, and review proposed AI-function improvements.

jev-align-3.mp4

Open recording · Repository · Creator source

_{Sutro — Experimental active-learning CLI. Training improvement is not held-out quality; inference and reflection models may both bill.}

Longer walkthroughs on YouTube

A full Jev walkthrough

A longer introduction and practical demonstrations from Moritz.

▶ Watch on YouTube · Source

_{Moritz | AI Systems — Linked video, not an independently reproduced tutorial. Title and creator metadata are checked through YouTube oEmbed when accessible.}

An email-classification walkthrough

A creator walkthrough of applying Jev to email classification.

▶ Watch on YouTube · Source

_{vogel — Linked video, not an independently reproduced tutorial. Title and creator metadata are checked through YouTube oEmbed when accessible.}

Practical ways to use Jev

An overview of possible applications and implementation ideas.

▶ Watch on YouTube · Source

_{Mark Kashef — Linked video, not an independently reproduced tutorial. Title and creator metadata are checked through YouTube oEmbed when accessible.}

Source notes: media remain hosted by their creators/platforms; this repository does not relicense them. Public X mirror metadata is used only to locate a poster, not to certify a demo. Reachable media is not proof of live inference, security, or benchmark performance. No project was executed for this gallery.

Media sources and link-check receipts · Suggest a visual demo

Curated X demos: compact source index

Curated X demos

Sources include Moritz Kremb's roundup and OpenRouter's five community winners. The five OpenRouter winner posts are covered; Moritz's thread is not claimed complete. Full X index and access notes.

Demo	What Jev does	Watch / inspect
Voice-controlled browser — @moritzkremb	Maps partial speech transcripts to typed intents and observed page targets; Playwright executes the selected action.	X demo · repo · source
Browser Use × Jev Ultrafast — @gregpr07	Chooses an operation and compatible DOM target in one decision cycle; a separate model supplies typing text.	X demo · repo · source
macOS computer use — @awlevin	Selects desktop actions from OCR and accessibility-derived state, with a separate writer for free text.	X demo · repo · source
Foreman coding-agent supervisor — @JoshARosen	Assesses coding-worker progress and verification needs while deterministic policy decides interventions.	X demo · repo · source
Jev trading-loop demonstration — @jarrodwatts	Uses typed buy/sell judgments in an order-book loop, while code owns quoting, limits, and execution.	X demo · repo · source
JevAI for XMage — ShiftSad · featured by @OpenRouter	XMage supplies legal plays; pure and hybrid players use Jev for bounded decisions and selection among searched lines.	X demo · repo · source
Jev Chess — sliday · featured by @OpenRouter	A shared internet-versus-Jev chess game visualizes probabilities over legal move candidates.	X demo · project · source
tisco — cairodavila · featured by @OpenRouter	Jev searches transcript meaning; code previews and applies approved clip moves and renames.	X demo · repo · source
Vibe Domain — OB Studio / Oliver · featured by @OpenRouter	Ranks domain candidates against vibe and keyword preferences, separately from registry and availability checks.	X demo · project · source
jev_search — caio0452 · featured by @OpenRouter	Keyword-density code prioritizes files and chunks; Jev judges passages in a fast first pass and a broader second pass.	X demo · repo · source

Star to bookmark the reviewed collection. A corrected source link or a well-explained contribution is just as valuable.