Jev for Tool calling

408 curated Jev resources. Turn natural language into typed function calls and agent actions.

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Docs5
Repos & sites386
Videos3
Posts7
Articles5
Playgrounds2

All 408 Jev resources for Tool calling

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Showing 145–192 of 408 resources

Independent open-source agent runtime where Jev makes typed tool decisions, an LLM authors text only when needed and reviews low-confidence calls, and code owns execution.

Jev Practices & Patterns#community#awesomejev#catalog-import

Community

parkavenue9639/jevloopPython

macos-computer-use-kit

macOS computer-use kit exposing an 18-tool stdio MCP server plus CLI that drives apps through the accessibility tree, posting input in the background without moving the user cursor.

Jev Demos & Experiments#community#awesomejev#catalog-import

Community

Sur-Cai/macos-computer-use-kitPython

jev-compaction

Context manager where Jev scores tool output into keep, pointer, or quarantine classes while kept lines stay verbatim and anything moved out can be expanded back byte for byte.

Jev Demos & Experiments#community#awesomejev#catalog-import

Community

Waxmell114514/jev-compactionPython

jev-mcp-dispatcher

Proof-of-concept dispatcher that discovers an MCP server's tools at runtime with list_tools() and routes plain-language commands using only Jev Choice and Noul, with no general-purpose LLM calls.

Jev Agents & MCP#community#jevbest#catalog-import

Community

abhishekashokvkumar/jev-mcp-dispatcherPython

open-jev-approvals

Approval gate for Claude Code where hooks send each tool call to Jev and a local policy returns allow or deny without changing the harness model, provider or sandbox.

Jev Agents & MCP#community#jevbest#catalog-import

Community

alexj11324/open-jev-approvalsGo

langchain-skill-router

LangChain deepagents middleware that replaces SkillsMiddleware with per-turn judging, loading only the SKILL.md files a turn needs so large catalogs stay out of the prompt.

Jev Agents & MCP#community#jevbest#catalog-import

Community

deyna256/langchain-skill-routerPython

typesafe-cli

Stdlib-only Python CLI and agent skill that evaluates a state against typed Choice, Score and Noul questions over the System One API without generating prose.

Jev Agents & MCP#community#jevbest#catalog-import

Community

geilt/typesafe-cliPython

jevex

Experiment where Jev controls the tool loop and a LangChain chat model only fills argument values and final prose, using 12 local read-only MCP tools across documents, math, and calendar.

Jev Agents & MCP#community#jevbest#catalog-import

Community

jvsteiner/jevexPython

jev-browse

Browser agent where Jev makes every navigation decision and agent-browser performs clicks and typing, stopping when the named goal page is reached or blocked.

Jev Demos & Experiments#community#jevbest#catalog-import

Community

kyrylosyzonenko/jev-browseJavaScript

jev-plays-pokemon

Autonomous Pokemon Red demo where Jev reads a compact text state each turn and answers typed Choice and Noul questions that deterministic code maps to PyBoy button presses.

Jev Demos & Experiments#community#jevbest#catalog-import

Community

milanboers/jev-plays-pokemonPython

jev-mcp

MCP server exposing Jev Choice, Score, Noul, batched ask, file-reading triage, and model listing as typed tools with full probability distributions.

Jev Agents & MCP#community#jevbest#catalog-import

Community

rashedInt32/jev-mcpTypeScript

prompt2jev

Agent skill plus CLI that rebuilds a plain requirement, an existing prompt, or current LLM-call code as typed Jev choice, score, and noul questions with runnable code.

Jev Agents & MCP#community#jevbest#catalog-import

Community

sumleo/prompt2jevPython

tenbin

Design-time toolkit for using Jev from a coding agent, combining docs, a stdio MCP server, and an agent skill for decomposing judgments into Choice, Score, and Noul.

Jev Practices & Patterns#community#awesomejev#catalog-import

Community

simota/tenbinTypeScript

rh-guard

Hook-level gate for coding agents that watches tool use for grader tampering, hidden-test edits, and eval-process interference, steering toward checks that cannot be gamed.

Jev Practices & Patterns#community#awesomejev#catalog-import

Community

24601/rh-guardTypeScript

construct-auto-classifier

Shell gate for coding assistants that judges commands by effect and blast radius, asking Jev twelve questions or a chat model, with fast rules first.

Jev Agents & MCP#community#awesomejev#catalog-import

Community

godspede/construct-auto-classifierTypeScript

dsh-jev-prune

A DeepSeek Harness plugin that replaces DSH's size-based context compaction with Jev judgments: tool results that are still needed are never trimmed however large, and spent ones get a code-written receipt instead of a model-written summary.

Jev Agents & MCP#community#awesomejev#catalog-import

Community

yangyu666/dsh-jev-pruneJavaScript

jev-browser-control

An MCP server that lets Claude or Codex drive a real Chrome window: Claude plans the task and Jev picks each click, keystroke and scroll from a numbered element list, with irreversible actions held for confirmation.

Jev Demos & Experiments#community#awesomejev#catalog-import

Community

nexibeo/jev-browser-controlJavaScript

jev-storyboard-lab

Companion code comparing Google ADK and Microsoft Agent Framework on one Pydantic VideoTimeline schema, with the same Jev client checking every generated segment for sane captions and durations.

Jev Practices & Patterns#community#awesomejev#catalog-import

Community

jimmyliao/jev-storyboard-labPython

agent-fastpath

Jev MCP server for coding agents with ready presets, deterministic rules before the model call, a confidence gate, server-side file triage, and a headless browser with SSRF protection.

Jev Demos & Experiments#community#awesomejev#catalog-import

Community

abhishekswe/agent-fastpathTypeScript

pi-jev-compaction

Automatic Pi extension that clears safely superseded reads and test runs outright and asks Jev about other large older tool outputs, replacing them with retrievable markers.

Jev Agents & MCP#community#awesomejev#catalog-import

Community

nourhelmi/pi-jev-compactionTypeScript

jet

Coding agent that pairs explicit SQLite-typed context chunks with a small TypeSafe judgment model, so the large generation model only sees selected context.

Jev Practices & Patterns#community#awesomejev#catalog-import

Community

arczhi/jetPython

reflex

Coding agent on Pi that pairs any OpenRouter LLM with TypeSafe Jev reflex checks on tool calls, turns and transcripts, where code thresholds decide allow, ask or block.

Jev Agents & MCP#community#awesomejev#catalog-import

Community

kaustav1996/reflexTypeScript

jev-claw

OpenClaw plugin adding a jev_route tool that classifies task type, complexity and risk with TypeSafe Jev, then maps the result to a route through testable JavaScript policy.

Jev Agents & MCP#community#awesomejev#catalog-import

Community

trietphan/jev-clawJavaScript

jev-guardrails

Mock carrier support agent with the guardrail layer built twice behind one interface: chat-model JSON judging versus TypeSafe Jev typed questions over the same 25 rules.

Jev Practices & Patterns#community#awesomejev#catalog-import

Community

deepansh-saxena/jev-guardrailsPython

jev-pilot

Python helper that wraps TypeSafe Jev for agent arbitration, pre-execution guard, stuck-loop checks, fact verification and intent routing with probabilities and confidence.

Jev Agents & MCP#community#awesomejev#catalog-import

Community

h0j5bz0adh0-stack/jev-pilotPython

wev

Local System One decision models in 1.7B, 4B and 8B sizes that answer choice, yes/no and score questions over the POST /v1/systemone shape, with no text generation and no API key.

Jev Demos & Experiments#community#awesomejev#catalog-import

Community

alanhuangyoo/wevPython

pi-thinking-router-jev

A pi extension that picks the thinking level for each task, escalating on reasoning-type failures and stepping back down after sustained stability, using Jev choice with local rules as fallback.

Jev Agents & MCP#community#awesomejev#catalog-import

Community

Wh0rigin/pi-thinking-router-jevTypeScript

typesafe-ai-firewall

Shadow-mode validation of a pre-execution firewall that batches five typed Jev hazard questions plus a blast-radius score into one call, leaving ALLOW, APPROVE and BLOCK to auditable Python.

Jev Agents & MCP#community#jevbest#catalog-import

Community

AnshChoudhary/typesafe-ai-firewallPython

typesafe-mod

A Claude Code function hook that sends AskUserQuestion dialogs to Jev and draws a probability per option above the dialog, so you still choose while seeing how confident the model is.

Jev Agents & MCP#community#jevbest#catalog-import

Community

BeLazy167/typesafe-modTypeScript

jev-ra

Browser-use layer for CLI coding agents: Jev picks the operation and target element in one round trip per step, exposed over MCP with a CLI, a Python API and an HTTP server.

Jev Demos & Experiments#community#jevbest#catalog-import

Community

brnyxx/jev-raPython

jev-shield

Proxy that sits between any MCP client and any stdio MCP server and screens tool calls, tool results and tool descriptions with Jev probabilities, layering deterministic allowlists, semantic checks and session taint tracking over a JSONL audit trail.

Jev Agents & MCP#community#jevbest#catalog-import

Community

caiovicentino/jev-shieldJavaScript

jev-mcp

Go MCP server exposing Jev through OpenRouter or TypeSafe as five tools: decide, classify, verify, rerank and list_models. Each tool call is one paid inference request, answers are validated against the question asked, and the unchanged provider response is returned with its usage cost.

Jev Agents & MCP#community#jevbest#catalog-import

Community

freepik-company/jev-mcpGo

decision-first

Agent skill that pushes a coding agent to try Jev before it writes another regex or prompt, then writes down what happened. Four reference files, an eval set of 20 trigger prompts, and three stdlib Python scripts for running questions, scoring agreement against labels you already have, and keeping a decision lab.

Jev Agents & MCP#community#jevbest#catalog-import

Community

harrymunro/decision-firstPython

jear

Rust client that lets Jev choose the model and privacy tier for NEAR AI Cloud calls. A client-controlled monthly cap in cents is combined with Jev scores for complexity and sensitivity and nouls for private TEE, risk and urgency, then the NEAR catalog is filtered to what survives that choice.

Jev Agents & MCP#community#jevbest#catalog-import

Community

iJ03l/jearRust

skill-router

Claude Code CLI that ranks every skill installed on your machine against a session goal using Jev, then tells the agent which one to load. Three possible answers: load this skill, nothing you have installed fits, or no skill is needed, and nothing else runs for the rest of the session.

Jev Agents & MCP#community#jevbest#catalog-import

Community

lomeshdutta/skill-routerPython

jev-workbench

Local service for authoring versioned judgment functions on TypeSafe Jev in a browser, then publishing one immutable version that both your backend calls over HTTP and your coding agents call over MCP, using a scoped client token.

Jev Agents & MCP#community#jevbest#catalog-import

Community

molis-ai/jev-workbenchTypeScript

pi-fast-jev-compaction

pi extension that never summarizes: it asks Jev whether each old tool call and tool result is still needed, then drops or truncates only those, passing text, thinking and images through verbatim in a per-request view.

Jev Agents & MCP#community#jevbest#catalog-import

Community

QuentinDanblon/pi-fast-jev-compactionTypeScript

jevarena

Next.js spectator demo in which two independent Jev agents drive separate Snake browsers through same-origin iframes, clicking indexed direction buttons only, with each board state streamed to a server-only endpoint that returns the chosen target.

Jev Demos & Experiments#community#jevbest#catalog-import

Community

raihankhan-rk/jevarenaTypeScript

jev-system-architect

A written agent skill, not code: it walks through where a system contains fuzzy semantic judgment that should become a small Jev decision primitive, and what the deterministic code around it should keep owning.

Jev Agents & MCP#community#jevbest#catalog-import

Community

samtay32/jev-system-architect

jev-browser

Playwright wrapper that routes natural-language operations and assertions through Jev while clicks, typing and waits stay deterministic, with verification provenance.

Jev Demos & Experiments#community#jevbest#catalog-import

Community

tontoko/jev-browserJavaScript

jev-layer

MCP layer that lets an agent harness ask Jev for a bounded choice from a candidate set it already allows, while permissions and execution stay with the host.

Jev Integrations & Adapters#community#jevbest#catalog-import

Community

typakon4/jev-layerJavaScript

siftr

Four read-only MCP tools that rank files, cut a file down to the relevant part and pick from long lists, measured on a frozen SWE-bench Lite split.

Jev Practices & Patterns#community#awesomejev#catalog-import

Community

Bentlybro/siftrPython

JevPromptCoach

Claude Code plugin that scores your prompts against seven coding-agent habits on demand rather than on every keystroke, with a backfill so the first report covers prompts you have already written.

Jev Agents & MCP#community#awesomejev#catalog-import

Community

CrowdLinker/JevPromptCoachTypeScript

jevprune

Filters long command output for coding agents against a task description, keeping retained lines unchanged and in order, collapsing dropped runs into markers with a saved copy you can print back later.

Jev Agents & MCP#community#awesomejev#catalog-import

Community

ibrahemid/jevpruneTypeScript

jev-mode

Python library and CLI that moves bulk semantic judgments — ticket triage, stale-file tagging, bug or question routing — out of the agent's context into typed Jev questions, with a measured comparison against an in-context control.

Jev Practices & Patterns#community#awesomejev#catalog-import

Community

ddfeyes/jev-modePython

jev-decisions

Hermes plugin that puts an agent's plans, drafts and claimed completions up for review — plan_review, evidence_review, action_verify — plus local approval rules that make no model request.

Jev Agents & MCP#community#awesomejev#catalog-import

Community

bojansandhaus/jev-decisionsPython

actiongate-jev

A runtime authorization gateway for agent tool calls: deterministic policy plus six narrow Jev questions produce evidence, then a single-use grant bound to the exact approved action is consumed at execution.

Jev Agents & MCP#community#awesomejev#catalog-import

Community

omkarghugarkar007/actiongate-jevTypeScript

toolgate

A calibrated tool-call firewall for coding agents: seven typed risk questions plus one question about whether the task authorized the call decide whether a Bash, Write or MCP action runs, asks, or is denied.

Jev Practices & Patterns#community#awesomejev#catalog-import

Community

RiskAverseTech/toolgateTypeScript

Start here with Jev

Featured entries for tool calling.

Fast Jev Compaction

7.6k

A Claude Code plugin and npm library that replaces transcript summarization with Jev keep-or-drop judgments, deleting stale tool calls and results while kept text stays verbatim.

Jev Tools & CLIs#community#typescript#claude-code

Community

tamaratran/fast-jev-compactionTypeScript

jevQL

psql-shaped CLI and Go, TypeScript, and Python SDKs that let you write jev(), jev_prob, jev_choice, and jev_score in queries against vanilla PostgreSQL, judging the surviving rows with Jev in batches. No CREATE EXTENSION or superuser required.

Jev Tools & CLIs#community#go#postgres

Community

kylemclaren/jevqlGo

Related use cases

Use cases that overlap with Tool calling.

Jev articles

Original guides that go deeper on Jev tool calling.

All Jev articles

The Cost of a Decision: Token Pricing and the Break-Even Point

Oct 12, 2026

Jev bills input tokens and gives output away, and questions in one call run in parallel. Why the state is where the money is, and how to size a request before you ship it.

Jev Practices & Patterns#pricing#cost#api

Read article

Retrieval with Decisions: Filter, Rerank, and Verify

Oct 12, 2026

Retrieval is a sequence of bounded judgments. How a decision model slots into passage filtering, semantic find, reranking, and citation checks, and what stays in deterministic code.

Jev Cookbooks#retrieval#reranking#rag

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Jev in Customer Support: Triage, Routing, and Escalation

Oct 12, 2026

Support is a long chain of small judgments over text. Triage category and urgency separately, route with a confidence gate, decompose hard tickets, and decide the action in code.

Jev Practices & Patterns#customer-support#routing#triage

Read article

Watch: Jev in action

Video walkthroughs and demos from the community.

YouTube: Sam Witteveen on System 1 thinking, then Choice, Score, and Noul demos, and chained actions.

YouTube: Nate Herk compares speed and cost against ordinary models, then builds an X feed classifier and a paper-trading prototype.

YouTube: Ray Amjad puts Jev inside an agentic coding loop and looks at what it costs to run.

Discussions about Jev

Threads from Reddit and Hacker News about building with Jev.

Hacker News: OpenAI's Luna Decisions API framed as a fast follow to TypeSafe's Jev wave.

matt_d6 pointsOpenAI Answers TypeSafe's Jev with a Decision API Built on LunaRead the thread on Hacker News

Hacker News: Nikola Balić on what made the Jev launch easy to try and easy to share.

nkko2 pointsWhat TypeSafe Got Right with the Jev LaunchRead the thread on Hacker News

Hacker News: Pointer to a DiffusionGemma plus vLLM tutorial for a Jev-shaped classifier.

1 pointHow to build a Jev-style classifier with DiffusionGemma and vLLMRead the thread on Hacker News

Hacker News: SafeDep Gryph plus Jev checks for compromised coding-agent behavior.

2 pointsDetecting Compromised AI Coding Agents with Jev and GryphRead the thread on Hacker News

From the Jev community

Posts from builders shipping with Jev right now.

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