Command-line tool for TypeSafe AI's Jev model. Ask yes/no, multiple-choice and rubric questions about any text and get calibrated probabilities back. Answers become exit codes for shells and CI, JSON
Ask any text a typed question. Get a probability back, not a paragraph.
jev is a command-line tool for TypeSafe AI's Jev model, the model that never writes text. Send it some content and a question you defined, get a calibrated probability, and branch on it in a shell script, a CI job or an AI agent. It is a semantic if statement for your terminal.
Quick start · What can I use it for? · Documentation · Command reference · FAQ
It takes two seconds, and it is how the next person finds jev.
Ask a question, get a probability, branch on the exit code, then ask several questions at once.
[!IMPORTANT] Unofficial project. jev is community-built. It is not affiliated with, endorsed by, or sponsored by TypeSafe AI. "TypeSafe" and "Jev" belong to their owner. You need a TypeSafe API key to use it.
You have text: a support ticket, a commit message, a user's answer, a product review, a model's output. You need a decision about it: is it angry, which team owns it, how risky is it, should this pipeline continue?
Today you either write brittle keyword rules, or you ask a large language model and then parse a sentence it might phrase differently tomorrow.
Jev is a third option. You define the question and the possible answers. The model returns a number for each one. Your code decides what to do.
One question, one number, about a hundredth of a cent. No prompt engineering, no JSON parsing, no "As an AI language model".
From the project README.
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