Jev AgentA source-verified directory of 487 Jev projects — browser agents, model routers, SDKs and MCP servers — each one showing the exact decision it hands to Jev. Curated by the Awesome Jev community, mirrored here under MIT.
Give Jev the current state and a few options. Get the Agent’s next step.
Core call · setup in the full example
const nextStep = choice("What next?", { login: null, askUser: null, retry: null });
const { answers } = await client.systemOne({ state: "Login form is ready", questions: { nextStep } });
console.log(answers.nextStep.choice);Node.js 20+ · Set TYPESAFE_API_KEY on your server. This page shows code and makes no model requests.
A startup-idea evaluation demo assigning KILL, FIX or SHIP labels from Jev scores.
Jev answers scoring, category and clarity questions; local weights and gates calculate the final label.
Shows a structured assessment process, not market validation, a success forecast or investment advice.
An Agent Skill for finding suitable Jev decision points and designing questions and comparison experiments.
Designs Noul, Choice, and Score question packs for an application, with a script for API-backed case runs.
Connects integration ideas, question design, and evaluation methods.
A Claude Code Stop hook that reads the turn transcript locally and calls Jev only when files changed and no check has passed, blocking an unverified “done”.
Four questions: whether the closing message claims done, claims checks passed, whether verification applies, and a complete / partial / blocked / other choice.
Skips the model when a check already passed; every error path lets the turn end.
An asynchronous Jev companion for Hermes Agent covering relevance, completion, recovery and optional admission decisions.
Jev evaluates bounded questions in the background while Hermes retains reasoning and execution responsibilities.
Records decision provenance and supports configuration that avoids blocking ordinary execution.
A commit-msg hook that scores the message against the staged diff with one Jev request of five Nouls and warns by default. Default blocking is a local regex belt on high-precision added-line hits; the secret_shaped Noul blocks only with --strict.
Five Noul questions in one request: checkable message, hunk match, debug leftovers, unmentioned work, and credential-shaped added lines. Default blocking is the regex belt; secret_shaped participates only under --strict.
Turns commit-message review into thresholded probabilities instead of prose; API failures still allow the commit.
Pokemon Red on PyBoy where Python owns the route and the arithmetic, and Jev chooses only among legal actions at actual branches.
A Choice over legal actions at each branch; battle turns also ask Noul faints_this_turn and should_flee; failures take the code default.
The model only picks among code-proven legal moves; a failed call never loosens the script.
An Agent skill recipe that predicts another skill’s closed-set outcome from its rules and evidence.
Jev first assesses whether a closed decision is possible, then selects among the target skill’s outcomes.
Includes API-call and response-check examples; it predicts the outcome without executing the target skill.
A browser extension that classifies YouTube caption segments with Jev, splitting requests when the segment or token budget is exceeded, paints five categories on the seek bar, and auto-skips those painted slices over the threshold.
One Choice per caption segment among content, sponsor, intro, outro, self_promo, recap, and other. Painted categories sponsor, self_promo, intro, outro, and recap skip when probability is at or above the threshold; content and other never skip.
Works on videos nobody has labeled yet; with no captions it does nothing.
A Neovim plugin that asks a plain-language question of every function in the buffer and lists every Jev hit in quickfix, ranked by probability.
Scores each Treesitter function against the user question, splitting across requests if the buffer does not fit. Every hit is listed in quickfix; only hits at or above the threshold get buffer marks.
Finds cross-language shapes that grep misses, and lands the ranked hits in the existing quickfix loop.
A chat-style Jev demo whose answers are selected from predefined or custom options rather than generated prose.
Maps answer styles to Choice options and selects chat titles from fragments of the question.
Shows answer options and probabilities in a chat UI with customizable answer sets.
A web playground for entering state and decision questions, then inspecting Jev answers and probability distributions.
Submits multiple Noul, Choice, and Score questions in one request.
Lets users try questions and answer options before writing application code.
Interactive three-level AI interrogation game powered by TypeSafe Jev; write responses and pass plea, logic, and paradox verdicts to earn release.
For each level, Jev evaluates release probability plus plea, logic, and paradox signals, then selects a persuasion tactic and scores persuasiveness.
Turns structured Jev judgments into playable feedback, pass thresholds, and leaderboard results that show how arguments affect release probability.
A community-maintained directory and radar for Jev, highlighting open-source projects with verified code and clear decision architectures.
Jev is TypeSafe's decision model. This directory groups projects by how they use choices, scores and probability judgements, with implementation links to help you assess fit for your own task.
TypeSafe ↗We prioritize open-source projects with clear Jev implementation evidence. Repositories without verifiable source code are excluded from the main directory.
Directory data and design from Awesome Jev by logicrw, used under the MIT License.
