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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 289–336 of 408 resources

agent-desktop
1.8kGitHub stars
Rust CLI that gives agents computer use through OS accessibility trees instead of screenshots: snapshot a live UI, act on stable element refs, then re-verify. Ships a jev-desktop skill where Jev picks the operation and target from accessibility-tree candidates.
Jev Demos & Experiments#community#jevbest
Communitylahfir/agent-desktopRust
agentconnect
1.5kGitHub stars
Open-source platform that puts ACP-compatible agents such as Claude Code, Codex, and Pi inside the team's Slack, Telegram, Discord, and GitHub workflows, with reusable Jev decisions for routing, response gating, and reviewer selection.
Jev Agents & MCP#community#jevbest
Communityagentconnect-md/agentconnectTypeScript
learn-agent-architecture
1.1kGitHub stars
A section-by-section guide to agent harnesses - loop, tool runtime, permissions, hooks, subagents, skills, memory, background work - using Claude Code, mini-swe-agent, Hermes Agent, and deepseek-harness as worked examples.
Jev Integrations & Adapters#community#jevbest
Communityhardness1020/learn-agent-architecturePython
celesto
1kGitHub stars
Sandboxed virtual machines for agents: each sandbox is a microVM that starts in about 500 ms, keeps files and state between sessions, and runs locally or in Celesto Cloud behind a CLI and Python SDK.
Jev Demos & Experiments#community#jevbest
CommunityCelestoAI/celestoPython
vexjoy-agent
441GitHub stars
A four-layer agent toolkit for Claude Code, Codex, Factory, and Reasonix: 43 agents, 62 skills, 78 hooks, 147 scripts, and a Jev-backed router that gates dispatch on intent alignment.
Jev Agents & MCP#community#jevbest
Communitynotque/vexjoy-agentPython
smithers
431GitHub stars
Smithers turns issues into reviewed, tested changes through flows defined beside your code, with an optional step that keeps the project wiki current. The 1.0 release candidate runs from a source checkout.
Jev Integrations & Adapters#community#jevbest
Communitysmithersai/smithersTypeScript
claude-code-trace
376GitHub stars
Claude Code Trace renders the JSONL session files in ~/.claude/projects/ as browsable conversations with expandable tool calls, MCP tool names, and token counts, with an optional Jev pass that scores agent efficiency.
Jev Tools & CLIs#community#jevbest
Communitydelexw/claude-code-traceRust
mu
488GitHub stars
A coding agent built on pi that hands its non-code decisions — what enters the context, whether a command is safe, whether the work is done — to a small judge model at 35 decision points per turn.
Jev Agents & MCP#community#jevbest
Communityqybaihe/muTypeScript
keel
330GitHub stars
A local-first macOS coding workspace that runs Claude Code, Codex, Cursor, Grok, Hermes, and pi over ACP, with a local Laya or hosted Jev selector choosing routes that the host then validates.
Jev Agents & MCP#community#jevbest
Communitycodejunkie99/keelRust
decapod
236GitHub stars
Rust governance kernel that sits between your coding agent and the repository, turning intent into bounded specifications, recorded state, and proof-backed publication across many separate invocations.
Jev Agents & MCP#community#jevbest
CommunityDecapodLabs/decapodRust
Albatross
235GitHub stars
Rust terminal coding harness with one TUI across local and cloud providers, per-turn cost on the status line, routed plans scored by explicit policy, real undo, and forkable session paths.
Jev Agents & MCP#community#jevbest
Communitymorganlinton/AlbatrossRust
awesome-jev
235GitHub stars
A curated index of Jev projects grouped by category, with one sentence of intent per repository: demos, official SDKs and skills, browser and desktop automation, agent tooling, and apps and integrations.
Jev Guides & Articles#community#jevbest
CommunityAmal-David/awesome-jevPython
compact-adviser
210GitHub stars
An agent plugin for Pi, Claude Code, Codex CLI and Grok Build that asks Jev two classification questions to decide whether a session sits at a safe compaction boundary, then hints or compacts for you.
Jev Agents & MCP#community#jevbest
Communitykunchenguid/compact-adviserTypeScript
abide
572GitHub stars
A CLI plus agent hooks that ask Jev one question per rule in your AGENTS.md on every edit or turn and return a probability, so a violating edit gets repaired inside the same turn. Claude Code, Codex, OpenCode, Pi.
Jev Agents & MCP#community#jevbest
Communitycoldteadotai/abideTypeScript
Anna-Agent
147GitHub stars
A local-first desktop agent for macOS that carries work from a conversation through to a reviewable result, split into Home, Cowork and Crew. The part worth a developer's attention is Crew, where Jev suggests an assignee for a single unassigned task and you accept or ignore it.
Jev Agents & MCP#community#jevbest
CommunityFoxtailsss-Andy/Anna-AgentTypeScript
webctl
156GitHub stars
A CLI search wrapper that fans out to up to three providers, dedupes the merged results, has Jev score them for relevance against a stated goal, and optionally scrapes and chunk-filters pages so an agent reads less. Saves context, at the cost of a Jev call per batch.
Jev Demos & Experiments#community#jevbest
Communitydorkitude/webctlGo
awesome-jev
140GitHub stars
Source-audited index of Jev and System One material, in Chinese and English: an integration matrix across SDKs and gateways, papers, evaluations and ecosystem projects, plus a browsable GitHub Pages site with a source log.
Jev Guides & Articles#community#jevbest
CommunityPromethe-us/awesome-jev
jev-engineering-zh
159GitHub stars
Chinese translation and third-party synthesis of TypeSafe founder design notes on building coding agents around Jev, keeping the author's original notes alongside and arguing that KV-cache-era agent design misprices model routing.
Jev Agents & MCP#community#awesomejev
Communityyibie/jev-engineering-zh
building-with-typesafe-jev
137GitHub stars
Unofficial agent skill that teaches coding agents to design for Jev: typed questions, calibrated confidence, and a short code sketch per pattern, plus links to more than 150 community projects indexed by shape.
Jev Agents & MCP#community#jevbest
Communityaaddrick/building-with-typesafe-jevPython
jev-code
116GitHub stars
Stanley is a CLI where you describe a code-review request in plain language and Jev routes it to one of ten bounded workflows. Each workflow is deterministic code that gathers bounded evidence and asks Jev fixed-choice questions per hunk; unmatched requests go to the Pi agent.
Jev Agents & MCP#community#jevbest
Communitydevagrawal09/jev-codeTypeScript
quicksilver
118GitHub stars
A Claude Code skill that moves bulk judgment off Claude and onto Jev. You filter files, classify items, rank candidates or locate lines, and it returns typed verdicts, a shortlist with borderline markers, and a receipt of the tokens Claude did not read.
Jev Agents & MCP#community#jevbest
CommunityUditAkhourii/quicksilverJavaScript
james_library
56GitHub stars
R.A.I.N. Lab is a local-first research environment. Four constrained perspectives investigate a question, quoted spans are checked against a local paper corpus, and experiments are pre-registered with host code, not a model, deciding pass, fail or inconclusive.
Jev Tools & CLIs#community#jevbest
Communitytopherchris420/james_libraryRust
prism-liquidity-agent
124GitHub stars
Prism is an autonomous liquidity agent for Solana concentrated liquidity pools, currently Meteora DLMM. Every ten minutes it recalls past outcomes, reads pool state, scores volume authenticity and decides HOLD, REBALANCE, EXIT or ENTER behind a risk gate.
Jev Tools & CLIs#community#jevbest
Communityirfndi/prism-liquidity-agentTypeScript
WindTunnel
87GitHub stars
WindTunnel is a benchmark harness for browser agents. It runs the same tasks on the same self-hosted Docker sites across every interaction mode, WebMCP, code execution, DOM, accessibility tree and screenshots, and scores the resulting application state instead of judging the run.
Jev Practices & Patterns#community#jevbest
Communitynekuda-ai/WindTunnelHTML
total-agent-memory
73GitHub stars
An MCP memory server for coding agents: decisions, fixes and session summaries live in a local SQLite store, and recall fuses BM25, locally computed dense embeddings, fuzzy matching and a knowledge graph.
Jev Agents & MCP#community#jevbest
Communityvbcherepanov/total-agent-memoryPython
jimothy
75GitHub stars
A Node package that distils Jev-style typed answers into small local classifiers, trained either from saved labels or from a Jev teacher, then served in Node or a browser worker.
Jev Demos & Experiments#community#jevbest
CommunityAndrewPrifer/jimothyTypeScript
Jev-Mem
198GitHub stars
Splits agent memory work in two: a lightweight System-One controller routes queries and allocates search budget across four graph views, and a larger model only writes the final answer.
Jev Agents & MCP#community#awesomejev
Communitylibingzheren/Jev-MemPython
jmeter-ai
63GitHub stars
Feather Wand, a JMeter plugin adding multi-model chat, an AI CLI terminal and an agent mode that edits your test plan through 21 tools, with optional Jev routing to narrow the toolset.
Jev Agents & MCP#community#jevbest
CommunityQAInsights/jmeter-aiJava
awesome-jev (BeatAPI)
68GitHub stars
Curated index of decision-model projects grouped into ten types, with a fixed-commit source link per listing, task-shaped scenario guides, and an agent skill for searching it.
Jev Guides & Articles#community#awesomejev
CommunityBeatAPI/awesome-jevJavaScript
jevk5
147GitHub stars
Apache-2.0 open-weight stand-in for a hosted decision model: Qwen3.5-4B with a distilled adapter scores noul, choice and score questions through a systemone-shaped server, with no generated tokens.
Jev Demos & Experiments#community#jevbest
Communityallebee/jevk5Python
ghosthands
56GitHub stars
macOS agent loop that moves a real USB HID mouse and keyboard under a vision model, with an experimental decision-model lane picking the next operation and screen target from an element table.
Jev Demos & Experiments#community#jevbest
Communityaffirmitv/ghosthandsPython
jev-cli
3GitHub stars
A Python CLI wrapper for calling TypeSafe Jev from the terminal, surfaced through a Show HN post in the launch week.
Jev Tools & CLIs#community#python#cli
CommunityjoshLong145/jev-cliPython
Show HN: Jev-CLI – CLI wrapper for JEV typesafe AI model
The Hacker News Show HN thread for joshLong145's Python jev-cli wrapper around the TypeSafe System One HTTP API.
Jev Guides & ArticlesPost#community#cli
Community
Jevify skill
The Hacker News thread for an agent skill that scans a repo for LLM calls that could move to Jev and converts them to TypeSafe, OpenRouter, or Vercel.
Jev Guides & ArticlesPost#community#agents
Community
We tested Jev on 100 real agent tool calls
Hacker News link to Archestra's write-up comparing Jev with a constant benign baseline on production Claude Code tool calls.
Jev Guides & ArticlesPost#community#agents#evaluation
Community
jev-harness-lab
3GitHub stars
Evaluation scripts, MCP tools, and a skill router built to measure where jev-1.13.0 fits in agent harnesses, with raw results under eval/.
Jev Benchmarks & Evaluations#community#evaluation#agents
CommunityAitejiu/jev-harness-labPython
Jev Demo with Cursor
Patrick Desjardins wires Jev into Cursor for deterministic decisions from the public docs, with blog posts on hundreds of text rules under two seconds.
Jev Media & TalksVideo#community#video#tutorial
Community
agent-chaperone
22GitHub stars
An MCP proxy and hooks adapter that screens an agent's tool calls before they run and the tool results before the agent reads them, with thresholds in a policy file.
Jev Agents & MCP#community#mcp#security
Communityagent-chaperone/agent-chaperoneTypeScript
What Jev can do inside an agent harness
A black-box pass over ten public datasets with jev-1.13.0: injection detection, reranking, intent, tool routing, and three tasks the author says do not work.
Jev Guides & ArticlesArticle#community#article#evaluation
Community
Jev on 100 real agent tool calls
Archestra labels 100 production Claude Code tool calls and compares Jev with a constant benign baseline, Sonnet 5, Laya, and several open decoders.
Jev Guides & ArticlesArticle#community#article#evaluation
Community
Jev with Coding Agents
Guidance on how Jev fits coding agents: it is not a drop-in agent model, so the page routes readers to routing, rubric scoring, and truth checks instead.
Jev Guides & ArticlesDocs#official#docs#coding-agent
Official
system1-agents
131GitHub stars
A Python toolkit that puts Jev, Laya, or Cua-S1 at the center of browser, computer-use, robotics, and game agents, with a CLI and an MCP server.
Jev Repos & SDKs#community#python#agents
CommunityThinkFlowLab/system1-agentsPython
perch
351GitHub stars
A semantic linting CLI that parses a repository into a method-level call graph, then asks Jev to flag likely defects and check rules written in plain English.
Jev Tools & CLIs#community#javascript#cli
Communitylakeday-org/perchJavaScript
GIF Decider
Say the moment and get reaction GIFs: Jev picks a reaction and literal subjects, then scores a KLIPY shortlist of up to 30 candidates from titles and tags.
Jev Tools & CLIsPlayground#community#playground#gifs
Community
JevHub
A git host for agents where every push and pull request gets a typed Jev review, every branch move a signed certificate, and sites deploy from a repo.
Jev Tools & CLIsPlayground#community#playground#code-review
Community
Will Jev Replace LLM's? What is Jev From TypeSafe AI
A Krish Naik explainer on whether Jev replaces LLMs and where decision models fit next to generative models.
Jev Media & TalksVideo#community#video#explainer
Community
fx auto mode benchmarked with Jev
Vercel's Pranit reports benchmarking the fx auto-mode safety classifier with Jev: about 5 to 18 times faster and more accurate than GPT-5.6 Luna.
Jev Practices & PatternsPost#community#x#benchmark
Community
Fast Jev Compaction
7.6kGitHub stars
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
Communitytamaratran/fast-jev-compactionTypeScript

Start here with Jev

Featured entries for tool calling.

Fast Jev Compaction
7.6kGitHub stars
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
Communitytamaratran/fast-jev-compactionTypeScript
jevQL
14GitHub stars
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
Communitykylemclaren/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
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
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
Read article
Jev in Customer Support: Triage, Routing, and Escalation
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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