JevCodeTooling
Plugging Jev scoring into developer tooling to improve everyday coding.
Projects in this category
- langchain-ai/langchainGitHub ↗★ 148.8kPythonAn optional Jev classifier integration for Python LangChain workflows.
- BerriAI/litellmGitHub ↗★ 62.5k—LiteLLM can use Jev to classify requests for its complexity-based model router.
- can1357/oh-my-piGitHub ↗★ 37.4k—Oh My Pi includes an optional TypeSafe judgment provider for bounded decisions in coding-agent workflows.
- davila7/claude-code-templatesGitHub ↗★ 33.0kPythonA community Claude Code Templates mod that uses Jev to suggest subagent models and reasoning levels.
- ComposioHQ/composioGitHub ↗★ 30.9kTypeScriptAn optional TypeSafe provider for Composio that uses Jev to choose among tools and bounded argument options.
- vercel/aiGitHub ↗★ 27.7kTypeScriptThe TypeSafe provider in AI SDK lets TypeScript applications call Jev through the shared evaluate interface.
- pydantic/pydantic-aiGitHub ↗★ 21.0kPythonAn optional TypeSafe provider and Jev model integration for Pydantic AI.
- elizaOS/elizaGitHub ↗★ 19.8kTypeScriptAn optional TypeSafe HTTP adapter in Eliza’s source, not registered with the Agent runtime by default.
- langchain-ai/langchainjsGitHub ↗★ 18.3kTypeScriptAn optional LangChain.js TypeSafeClassifier integration for sending state and predefined questions to Jev.
- openchamber/openchamberGitHub ↗★ 12.4kTypeScriptOpenChamber’s optional automatic model router uses Jev to classify a message before selecting a configured model and reasoning level.
- 0xPlaygrounds/rigGitHub ↗★ 9.0kRustAn experimental TypeSafe crate in Rig for expressing Jev questions and answers with Rust types.
- kunchenguid/firstmateGitHub ↗★ 8.5kShellFirstmate can optionally use Jev to match task briefs to dispatch rules before local policy chooses an Agent configuration.
- tamaratran/fast-jev-compactionGitHub ↗★ 7.8kTypeScriptClaude Code plugin replacing compaction summaries with Jev decisions — each tool call scored in one fast request, stale ones dropped, kept content verbatim.
- latitude-dev/latitude-llmGitHub ↗★ 4.7k—Latitude includes an optional Jev preclassifier for conversation checks and their selection records.
- ax-llm/axGitHub ↗★ 3.0k—Ax provides a TypeSafe integration for boolean or finite-class signatures and native Jev answers.
- bastani-inc/atomicGitHub ↗★ 873TypeScriptAn optional Jev decision backend in the Atomic coding Agent for bounded structured choices such as routing.
- gargpratyush/jev-routerGitHub ↗★ 649JavaScriptA Claude Code and CLI proxy that asks Jev to score task complexity and pick a model from the account’s available set.
- featherless-ai/simple-jevGitHub ↗★ 636PythonAdapter turning open LLM endpoints into Jev-compatible classification services without training a separate classifier head.
- agentjido/req_llmGitHub ↗★ 602ElixirA TypeSafe provider for calling Jev through ReqLLM’s evaluate interface in Elixir.
- BillionsBobby/JevRouterGitHub ↗★ 466—Routes among models, subagents, skills, MCP tools and CLIs using a shared candidate set.
- notque/vexjoy-agentGitHub ↗★ 444PythonAn optional Jev routing path that matches VexJoy requests to specialist Agents, skills and workflows.
- WrongStack/WrongStackGitHub ↗★ 401TypeScriptAn optional Jev dispatch classifier for choosing among WrongStack specialist Agents.
- cognesy/instructor-phpGitHub ↗★ 328PHPA TypeSafe Decision driver within Instructor PHP’s Polyglot module.
- monotykamary/pi-fabricGitHub ↗★ 320TypeScriptPi’s programmable runtime includes an optional Jev loop for observing state, making decisions and running bounded actions.
- typesafe-ai/typesafe-sdk-pythonGitHub ↗★ 307PythonOfficial TypeSafe Python SDK with synchronous and asynchronous clients for Jev System One, plus question and answer types.
- yonatangross/orchestkitGitHub ↗★ 300TypeScriptOrchestKit can optionally use Jev to classify coding sessions and set their colors when confidence meets a threshold.
- typesafe-ai/typesafe-sdk-jsGitHub ↗★ 285TypeScriptThe JavaScript and TypeScript SDK published by TypeSafe, with typed Jev requests and answers.
- kitze/skillboxGitHub ↗★ 277TypeScriptA self-hosted, versioned Agent skills library with optional Jev recommendations.
- 0xNatoshi/jev-codex-routerGitHub ↗★ 275PythonUses Jev to classify each Codex turn, then applies local rules to choose the model, reasoning effort, and speed mode.
- monteduro/killmyideaGitHub ↗★ 272TypeScriptA startup-idea evaluation demo assigning KILL, FIX or SHIP labels from Jev scores.
- cequence-io/openai-scala-clientGitHub ↗★ 257ScalaA dedicated TypeSafe module in a Scala client that supports multiple AI providers.
- NiazMorshed2007/jev-reviewGitHub ↗★ 248TypeScriptA local MCP code-quality reviewer returning structured scores to coding Agents.
- danieljvdm/effect-agentGitHub ↗★ 177TypeScriptAn Effect Agent TypeSafe decision provider for typed question sets and optional model selection.
- tamaratran/jev-prunerGitHub ↗★ 166TypeScriptA Claude Code output-pruning plugin filtering selected Bash output before it reaches the main model.
- Michaelliv/runlineGitHub ↗★ 165TypeScriptA TypeSafe plugin exposing Jev decisions as callable actions in Runline Agent JavaScript.
- supercorp-ai/supercovGitHub ↗★ 159—A quality and coverage CLI for coding agents: Jev assesses source properties while local coverage highlights testing targets.
- ldbumble/taskuaryGitHub ↗★ 143PythonAn optional Jev judgment module in Taskuary for checking user-defined conditions on task state.
- hackclub/aiGitHub ↗★ 142TypeScriptA Jev forwarding endpoint in the Hack Club AI proxy, using its authentication, limits and usage logging.
- mrnugget/jev-shell-historyGitHub ↗★ 119TypeScriptFish-style Zsh history suggestion tool ranked by Jev, ordering candidate commands from local history based on context.
- GhalebDweikat/winnowGitHub ↗★ 115PythonA context filter for Claude Code that hides irrelevant tool-output blocks and keeps the original text available for recall.
- rokcso/bluenoiseGitHub ↗★ 94TypeScriptAn X/Twitter filtering extension using local rules by default, with optional Jev checks for unmatched replies.
- mizchi/jev-playgroundGitHub ↗★ 73TypeScriptA MoonBit and TypeScript Jev playground covering games, browsers, command risk and small languages.
- obie/ruby_decision_modelGitHub ↗★ 59RubyA Ruby decision-model client for Jev through TypeSafe’s native API or OpenRouter.
- yusukebe/hono-jev-routerGitHub ↗★ 52TypeScriptAn experimental semantic HTTP router for Hono using natural-language route descriptions.
- hotchpotch/jev-rerankerGitHub ↗★ 50PythonJev-powered relevance filtering and reranking for RAG in Python.
- alp82/goodwatch-monorepoGitHub ↗★ 50PythonA film-and-TV attribute-scoring experiment inside GoodWatch comparing Jev question designs and batch sizes.
- shiftynick/jev-axiGitHub ↗★ 46TypeScriptA CLI for Jev pick, rate, check, rank, triage, and guard tasks, with optional hooks before Agent tool calls.
- nexibeo/jev-cookbookGitHub ↗★ 39JavaScriptPractical, tested recipes for TypeSafe's Jev decision model on OpenRouter: support triage, database indexing, file organizing, tagging, taxonomies, dedupe, PII detection, extraction, search re-ranking and a browser agent.
- iammrduncan/typesafe-ai-benchmarkGitHub ↗★ 38TypeScriptCompares Jev with other structured-output models on shared application tasks, recording errors, latency, Tokens, and estimated cost.
- GodsBoy/jev-agent-skill-routerGitHub ↗★ 31PythonTyped, confidence-aware agent skill routing with TypeSafe Jev.
- wundercorp/lokiGitHub ↗★ 28PythonLoki optionally adds Jev typed-judgment tools and routes a new session to a model within the selected gateway.
- tumf/jev-cliGitHub ↗★ 19PythonA CLI and stdio MCP server for typed Jev judgments over text or JSON.
- kieranklaassen/ruby_llm-typesafeGitHub ↗★ 19RubyA TypeSafe provider for RubyLLM 2 that exposes Jev’s three judgment types through structured output.
- mejiasd3v/pi-jev-routerGitHub ↗★ 17JavaScriptAutomatic model routing for Pi using TypeSafe's Jev through Vercel AI Gateway
- kavehmz/typesafe-playgroundGitHub ↗★ 15JavaScriptInteractive Jev experiments for support-routing previews and 3D driving simulations.
- prismhq/jev-routerGitHub ↗★ 15PythonOpen-source LLM router that uses TypeSafe's Jev to pick a model, on top of LiteLLM
- Kevthetech143/super-jevGitHub ↗★ 14PythonA TypeScript decision-to-action harness connecting evidence, Jev judgments, permitted actions, and outcome records.
- bohutang/siftGitHub ↗★ 13JavaScriptChrome extension that labels every post on X (Substance · Humor · Chit-chat · Promo · Junk · AI-written) with TypeSafe Jev, and hides the ones you don't want.
- doeixd/jev-prefGitHub ↗★ 13JavaScriptTurns AGENTS.md preferences into rules checked by Jev against hunks, staged files or PRs.
- matthewp/flue-jev-demoGitHub ↗★ 11TypeScriptFlue agent routing with TypeSafe Jev through Cloudflare AI Gateway
- frostney/clean-code-reviewGitHub ↗★ 11TypeScriptEvery code file in a pull request, judged against Uncle Bob's Clean Code by TypeSafe's Jev, then reviewed by Luna. Built on eve and Next.js.
- MarissaFamularo/citation-verifierGitHub ↗★ 11JavaScriptCheck whether each cited paper supports the sentence citing it. Claude proves the quote, TypeSafe's Jev scores it, a human decides.
- abhixhek/jevcalGitHub ↗★ 10PythonA toolkit for evaluating Jev probabilities on labeled data, selecting confidence thresholds and checking model drift.
- gtaras7/typesafe-jevGitHub ↗★ 10TypeScriptScreen a folder of CVs with the TypeSafe Jev decision model: typed judgments, an editable policy, free re-scoring.
- adarshmishra07/jcm-routerGitHub ↗★ 8TypeScriptLocal proxy that picks the Claude model and effort per message using TypeSafe Jev. Routes subagents, leaves your cached main chat alone.
- valentynkit/jev.nvimGitHub ↗★ 8LuaNeovim: ask the buffer a question, get a quickfix list. Treesitter splits functions, Jev scores each one, probabilities land as virtual text
- raihankhan-rk/diffjuryGitHub ↗★ 7TypeScriptDiffJury — TypeSafe Jev PR risk router + code review coach
- kitze/pagegradeGitHub ↗★ 7TypeScriptGrade page sections for clarity, writing and on-page SEO. WXT + TypeSafe AI Jev.
- kuhung/understanding-jevGitHub ↗★ 6HTMLReading Jev: a deep dive into its millisecond judgments and engineering limits.
- FFatTiger/new-api-plugin-typesafeGitHub ↗★ 4JavaScriptTypeSafe AI System One (Jev) task plugin for QuantumNous/new-api — native /v1/systemone, synchronous evaluation, token billing
- cephalization/jev-triageGitHub ↗★ 4TypeScriptUses typeful jev, zero sync to pull and sync large repositories for issue triage
- Butochnikov/laravel-typesafe-jevGitHub ↗★ 3PHPA Laravel adapter for Jev with configuration, dependency injection, a Facade and a request-recording test fake.
- komikat/jev-bfsGitHub ↗★ 1PythonWikipedia link races with direct Jev ranking and a live terminal display.
Indexed in the Jev community ecosystem directory, data snapshot 2026-11-02.
Frequently asked questions
What is Tooling?
"Tooling" is a project category in the Jev ecosystem with 73 projects listed. Plugging Jev scoring into developer tooling to improve everyday coding.
Which projects in "Tooling" should I look at first?
Sorted by stars, start with: langchain-ai/langchain, BerriAI/litellm, can1357/oh-my-pi, davila7/claude-code-templates, ComposioHQ/composio. Each has its own page covering positioning, language, license and alternatives in the same category.
Other categories
Keep going on this site
Try, docs, cases, and pricing link to each other. The next page is on this site.
- Site directoryThe full list of the pages above.
- EcosystemCommunity projects by category.
- Jev coverageEach entry names the decision and its evidence.
- Daily casesThe next batch of coverage cases, each day.
- CommunityPublic posts, each with its source.
- BuildsNotes on model and site updates.
- PrimitivesChoice, Noul, and Score together.
- PatternsRouting, fan-out, and composite scoring.
- SDKsHTTP, Python, and JavaScript.
Use clavue-jev
- Try a judgmentSend a state and read the answer.
- Live scenesTetris, six rapid judgments, and a sort. Copy the call and run it again.
- Judgment LabSupport triage, release review, compliance routing — edit and run on the spot.
- Compareclavue-jev and jev-1.13.0 answer the same question.
- DemosJudgment examples you can edit.
- PricingInput is $0.042 per million tokens. Output is free.
- APICall POST /v1/judge with a key.
Docs
- IntroductionWhat this model is for.
- Quick startThe smallest call that runs.
- System OneWritten here: a state plus one typed question. The model is clavue-jev.
- StateThe text you send in.
- ConfidenceHow sure the answer is, and when to act on it.
- ChoicePick one mutually exclusive option.
- NoulA yes/no question, returned as the probability of yes.
- ScoreRate along a scale.
- Intent routingOne Choice call dispatches the request.
- Confidence routingAct when confidence is high. Hand off when it is low.
- Fan-outAsk several questions of one state.
- Composite scoringFold several scores into one ranking.
- HTTP APIThe request shape without an SDK.
- Python SDKCall a judgment from Python.
- JavaScript SDKCall a judgment from JavaScript.
Cases
- Use-case mapWhich primitive people use for which job.
- GuardrailsA yes/no check before an action runs.
- Function callingPick which function to call.
- Classify with confidenceDo not act when the class is unsure.
- Semantic findFind the passages that match.
- Parallel questionsAsk the whole set in one call.
- Hierarchical classificationCoarse class first, then the fine one.
- Citation checkWhether a sentence is supported by the source.
- Entity alignmentWhether two names are the same thing.
- Skill suggestionChoose which skill fits the moment.