jev-judgment

September 17, 2026 · View on GitHub

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An Agent Skill that sends closed judgments to TypeSafe Jev and acts on the probabilities. The main coding model keeps writing code. Jev answers yes/no, choice, and score questions in ~250 ms so the agent guesses less and interrupts the user only when a person must decide.

This repository is the skill only. Install it with the skills CLI; it does not depend on any particular agent harness.

Install

npx skills add HyunjunJeon/jev-judgment
npx skills add HyunjunJeon/jev-judgment -g -a claude-code codex

Then set TYPESAFE_API_KEY in the environment or in <cwd>/.env. Mint a key at console.typesafe.ai. Without a key the bundled script fails open and the agent continues as if the skill were not installed.

Requires python3 3.9+ (standard library only) and network access to api.typesafe.ai.

What it does

Call Jev at three points:

  1. Before asking the user a closed question — if the conversation already determines the answer, proceed and say so; otherwise ask.
  2. Before a command that may destroy data, leak secrets, or reach beyond the task — stop and confirm when any dimension crosses its threshold.
  3. After a command fails — classify the failure and check the output for secrets before retrying.

Jev's confidence is evidence about the context, not permission to act. Deletion outside the request, breaking changes, new dependencies, paid or remote actions, and anything the user said to ask about always go to the user.

The request body is the TypeSafe API as-is: POST https://api.typesafe.ai/v1/systemone with {state, questions}. The bundled scripts/jev.py redacts credentials, truncates long strings, and never blocks the agent on a network error.

Full protocol, thresholds, and question templates: skills/jev-judgment/SKILL.md.

Layout

jev-judgment/
├── skills/jev-judgment/
│   ├── SKILL.md
│   ├── scripts/jev.py
│   └── references/
│       ├── questions.md
│       └── api.md
├── LICENSE
└── README.md

The skills/<name>/SKILL.md layout is what npx skills add owner/repo discovers.

License

MIT