found the perfect use case for @typesafeai Jev: instant compaction in 2026, why is compaction still a summarization prompt? Jev can make it instant by scoring every tool call and dropping what’s irrelevant
Tools & Integrations
40 curated entries. CLIs, MCP servers, playgrounds, and platform integrations that put Jev inside the editors, agents, databases, and gateways you already use.
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Editor-picked entries in tools & integrations.
A Python asyncio runtime that puts Jev in a supervision loop above Codex or OpenCode workers: it judges completion, test sufficiency, and stuck loops, then steers, retries, or stops the job.
Tools & Integrations#community#python#coding-agent
Communityforeman
Run a Pydantic AI agent on Jev: each field of the output type becomes one question, the prompt is the state, and confidence comes back per field.
Tools & Integrations#community#pydantic#python
Community
Showing 40 of 125 resources
The official demo hub, currently home to the Smart Home Assistant, which uses speculative questions to pick a tool and falls back to a general model when nothing fits.
Tools & Integrations#official#demo#tool-calling
Official
TypeSafe's announcement that Jev is available on the Vercel AI Gateway, linking the model page with the Jev API, pricing, and playground.
Tools & Integrations#official#x#vercel
Official
A Python asyncio runtime that puts Jev in a supervision loop above Codex or OpenCode workers: it judges completion, test sufficiency, and stuck loops, then steers, retries, or stops the job.
Tools & Integrations#community#python#coding-agent
Communityforeman
A staged code-review workflow that uses Jev for bounded judgments over Git diffs or whole codebases, with a local dashboard. Policy and thresholds stay in code while Jev screens five risk areas.
Tools & Integrations#community#typescript#code-review
Communityjev-review
A web-search app where Jev picks sources, time ranges, and query terms, then ranks results from a dozen engines through Search1API, returning links and relevance scores instead of generated answers.
Tools & Integrations#community#typescript#search
Communityjev-search
A PostgreSQL extension that filters, ranks, and classifies table rows with plain-language conditions judged by Jev, batching 20 rows per request and caching answers per session.
Tools & Integrations#community#postgres#sql
Communitypg-jev
A browser-use agent where Jev picks one action per step from a page's interactive elements. Runs as an MCP server, CLI, or library and returns a step trace, screenshot, and console errors.
Tools & Integrations#community#typescript#mcp
Communityjev-browser
An MCP server exposing ten Jev judgment tools, including verify, screen, find, rerank, classify, review, and gate, each returning typed probabilities in roughly 150 to 500 ms.
Tools & Integrations#community#typescript#mcp
Communityjev-mcp
Control a headed Chromium window by voice: one Jev request per partial transcript decides intent, target, and completeness in roughly 300 ms, while code applies thresholds and builds the action.
Tools & Integrations#community#javascript#browser
Communityjev-voice-browser
A single-binary Go MCP server exposing one evaluate tool for noul, choice, and score questions, with one-command registration for Claude Code, Claude Desktop, and Codex.
Tools & Integrations#community#go#mcp
Communitytypesafe-mcp
A Claude Code plugin that trims long Bash output after a command runs but before the model sees it: irrelevant chunks are dropped with omission markers while errors, diffs, and code are preserved.
Tools & Integrations#community#typescript#claude-code
Communityjev-pruner
Grep by meaning instead of regex: Jev scores every line, meanings combine with AND, OR, and NOT, and one query matches across Japanese, French, German, Spanish, and more.
Tools & Integrations#community#javascript#cli
Communityjev-semgrep
A Pi coding-agent extension with Jev as a decision layer: a gate judges bash, write, and edit calls before they run, and an output judge flags leaked secrets and classifies failures.
Tools & Integrations#community#typescript#coding-agent
Communitypi-jev
A Rust CLI that ranks agent skills for the next step with a two-stage Jev pass plus lexical prefiltering, with Claude Code hooks, a TUI, abstention, and --why-not explanations.
Tools & Integrations#community#rust#cli
Communityskillranker
A pre-alpha PostgreSQL extension for categorical work in SQL: Noul, Choice, and Score functions plus batched variants that classified 38 strings in two requests.
Tools & Integrations#community#postgres#sql
Communitypg_typesafe
Render a live Jev meter over any video: Whisper transcribes, every sentence is scored, and ffmpeg exports a 16:9 edit with flags and a scoreboard. Presets cover debates, calls, and pitches.
Tools & Integrations#community#python#video
Communityjevmeter
Fish-style zsh autosuggestions ranked by Jev: each keystroke asks which of your last 100 distinct history entries you are completing and shows the best match for one-key acceptance.
Tools & Integrations#community#typescript#zsh
Communityjev-shell-history
A local decision ledger for Jev-class models: caches decisions keyed by redacted model, schema, and state, replays them deterministically in CI, and publishes bundles without raw state.
Tools & Integrations#community#rust#caching
Communityjevcache
LangChain's langchain-typesafe integration exposes Jev as a TypeSafeClassifier plus experimental model-routing and auto-mode middleware that screens risky tool calls before execution.
Tools & Integrations#community#integration#python
Community
Tamara's demo of fast-jev-compaction for Claude Code: instead of summarizing context, Jev scores every tool call and drops the irrelevant ones, with a video of it running.
Tools & Integrations#community#x#video
Community
Alex Volkov reports that a Jev-powered Claude plugin reviewing unnecessary tool calls cut a session from nearly 1M to 86K tokens in about one second, with the install prompt in the post.
Tools & Integrations#community#x#claude
Community
Guillermo Rauch says the fx auto-mode safety reviewer, currently on GPT Luna, is up to 18x faster at p95 and more accurate with Jev, and that Jev is coming to Vercel AI Gateway.
Tools & Integrations#community#x#vercel
Community
OpenRouter's beta announcement for Jev: state plus typed questions returns typed decisions with probabilities, so there is no JSON prompting, parsing layer, or output validation.
Tools & Integrations#community#x#video
Community
Browser Use's Ultrafast agent puts Jev in charge of picking each browser action from a dynamic DOM action space. The author reports a flight search in 7 seconds for about $0.0039.
Tools & Integrations#community#x#video
Community
The pg-jev author demos jev(), a PostgreSQL extension that filters table rows with natural-language conditions and no index or embeddings, judging 129 rows in about a second.
Tools & Integrations#community#x#video
Community
A short demo of a model router built with Jev: each request is classified by Jev and forwarded to the model judged most suitable, shown as a screen recording.
Tools & Integrations#community#x#video
Community
A DuckDB extension that classifies rows in CSV, Parquet, or DuckDB tables with Jev, reported at about 10 seconds for 1,000 rows and framed as more ergonomic than a bespoke classifier.
Tools & Integrations#community#x#duckdb
Community
Cloudflare's developer account announced that Jev is available on AI Gateway, callable from Workers with typed Noul, Choice, and Score questions returning structured answers.
Tools & Integrations#community#x#cloudflare
Community
Use Jev as a Braintrust judge scorer, then inspect selected answers, confidence, and probabilities alongside the scorer answer. Includes tracing for your own calls.
Tools & Integrations#community#evaluation#observability
Community
An agent-first CLI for System One: ask, rank, extract, verify, screen, find, and decide from the shell, with an installable agent skill. Published on PyPI.
Tools & Integrations#community#cli#agent
Communitytypesafeai-cli
@jev.fn compiles a Python function definition (parameters, docstring, return annotation) into a state plus typed questions, then validates the answers back into Pydantic models.
Tools & Integrations#community#python#decorator
Community
A community playground with over a hundred use cases, games, and model challenges, with editable prompts and side-by-side comparisons.
Tools & Integrations#community#playground#nextjs
Communitytypesafe-playground
Run a Pydantic AI agent on Jev: each field of the output type becomes one question, the prompt is the state, and confidence comes back per field.
Tools & Integrations#community#pydantic#python
Community
An MCP server that puts Jev in the coding loop for Cursor, Codex, and other MCP clients: coding-loop checks, ranking, verification, and review tools.
Tools & Integrations#community#mcp#coding-agent
Communityjev-mcp
Jev-backed auto mode for the Pi coding agent: semantically approves bash, write, and edit tool calls, and fails closed whenever a decision cannot be made.
Tools & Integrations#community#coding-agent#permissions
Communitypi-jev-auto-mode
AI Gateway's evaluation modality: call Jev as `typesafe-ai/jev` through the AI SDK's experimental_evaluate API, with structured answers instead of free-form text.
Tools & Integrations#community#vercel#integration
Community
Model card for `typesafe-ai/jev`: evaluation type, $0.042 per 1M input tokens, zero output token charge, and a hosted playground.
Tools & Integrations#community#vercel#pricing
Community
Access Jev through OpenRouter's decisions endpoint, an alternative route to early access that still uses TypeSafe's question and answer shapes.
Tools & Integrations#community#openrouter#api
Community
Drop-in skill for Claude Code, Codex, and other agent environments that teaches the right way to structure states and questions.
Tools & Integrations#official#agent#skill
Officialskills
Get an API key, manage models, and try the playground: three walkthrough lessons plus realistic use cases like resume screening and ticket routing.
Tools & Integrations#official#playground#api-keys
Official
Articles
Original guides that go deeper on tools & integrations.
The fastest-growing corner of the Jev ecosystem is coding agents. A tour of the MCP servers, tool-call gates, context pruners, and skill rankers built for that loop.
Tools & Integrations#agents#mcp#coding-agent
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From the community
Posts from builders shipping with Jev right now.
Instant compaction with Jev
A Claude session from 1M to 86K tokens
This is actually insane. This uses @typesafeai Jev model, as a plugin in Claude to review all the un-nesseasary tool calls, and it takes 1s to run! Like, literally, 1 second to take my Claude session from nearly 1M to ... 86K tokens! 😮 Ask your claude to install it and be Show more
found the perfect use case for @typesafeai Jev: instant compaction in 2026, why is compaction still a summarization prompt? Jev can make it instant by scoring every tool call and dropping what’s irrelevant
Vercel's fx safety reviewer, 18x faster
We're seeing extraordinary results from @typesafeai. Default mode in 𝚏𝚡 is auto, with a safety reviewer analyzing every command. That reviewer runs on GPT Luna today. Jev is up to 18x faster (p95) *and* more accurate. It's coming to @vercel AI Gateway and likely new default.
@fazxes
We benchmarked fx auto mode (safety) classifier with @typesafeai's Jev. tl;dr: ~5-18x faster and more accurate than 𝚐𝚙𝚝-𝟻.𝟼-𝚕𝚞𝚗𝚊, our current top choice
