An unofficial, MIT-licensed Go client for TypeSafe's System One Jev model. The README labels it alpha and warns that breaking changes and bugs should be expected.

How does the typed question API work?

You build a question, keep its value as a programmer handle, send a state plus the questions, and read each answer back through the same handle, without string keys or type assertions.

How do I install the Go client?

Run go get github.com/mhmdkzr/jev. The README says the jev package has no dependencies outside the Go standard library and requires Go 1.27 or newer.

Does the client require an API key?

Yes. The quickstart creates the client with jev.NewClient(jev.WithAPIKey(os.Getenv("JEV_API_KEY"))), so a Jev API key is supplied through the JEV_API_KEY environment variable.

What does the quickstart example ask Jev?

It defines a Noul question about whether a message conveys urgency and a Choice question about which team should handle it, with billing, technical and sales options; the captured text cuts off in the sales option.

Is the client stable enough for production?

The README explicitly calls it alpha and says to expect breaking changes and potential bugs, so it is not presented as production-stable. GitHub metadata shows 0 stars, created 2026-09-17 and pushed 2026-09-18.

What is missing from the captured README?

The excerpt stops inside the first Choice example, so the rest of the request flow, response handling, error behaviour and any score questions are not visible; only the install and partial quickstart are grounded.

Jev directory

CommunityJev Repos & SDKs

Jev (unofficial Go client)

An unofficial Go client for TypeSafe's System One Jev model. It sends a state plus typed questions and returns one typed answer per question, with alpha status and no dependencies outside the standard library.

See highlights Open github.com

Stars: 0
Language: Go
License: MIT
Reading time: 2 min
Published by: Community
Author: mhmdkzr
Last verified: Oct 2026

mhmdkzr/jev

User repository on GitHub

View on GitHub

An unofficial Go client for TypeSafe's System One Jev model

Forks: 0
Last pushed: Updated Sep 2026

Repo stats from the GitHub API, cached Oct 2026.

Tagscommunity github go sdk

Works forJev for Classification Jev for Routing

Used inJev for Software & DevTools

Languages: Go
Platforms: API
Capabilities: Open sourceRequires API key

Highlights

Sends a state plus typed questions and returns one typed answer per question, read back through the same handle.
Questions are programmer handles, so results need no string keys or type assertions, per the README.
Requires Go 1.27 or newer; the jev package has no dependencies outside the standard library.
README marks the project alpha and warns of breaking changes and potential bugs.
MIT-licensed, 0 stars, created 2026-09-17 and last pushed 2026-09-18.

Quickstart

bash

go get github.com/mhmdkzr/jev

Watch out

README reviewed 2026-10-17; the captured quickstart cuts off inside the department Choice example, so error handling, scoring, full authentication and the end of the request flow are not visible. The project is self-described alpha, and metadata shows 0 stars.

Questions about this entry

Short answers drawn from the linked project or page.

From the Jev guides

Original write-ups on what this entry is for.

The Open Reimplementations: Local Models That Speak System One

Sep 22, 2026

Closed weights have not stopped the ecosystem from rebuilding the shape in the open. API-compatible servers, retrained heads on small models, and inference-time tricks that skip generation entirely.

Jev Repos & SDKs#open-models#research#local

Read article

From the Jev AI model community

Posts from builders shipping with Jev right now.

Follow @typesafeai