Recipes 01 hands-on 6 min Updated Sep 20, 2026
Prepare materials
API key, SDK or HTTP, optional Gateway; decide atomic judgments, state fields, thresholds, and escalate paths before you code.
Goal
Have accounts, a first call path, and a design checklist before you automate support, RAG, or n8n.
Ingredients
- TypeSafe API key as
TYPESAFE_API_KEY(console). - Call path: official Python/JS SDK, or raw System One HTTP; optional Vercel AI Gateway model
typesafe-ai/jev. - Feel first: Playground (or community jevplayground.com).
- Optional: Agent skill for coding agents — not required for these tutorials.
Design checklist (before coding)
- Which judgments are atomic (one Choice / Score / Noul each)?
- Which state fields does each question need — and what stays out?
- Which thresholds will code own (confidence / P(yes))?
- Where does low confidence go (human, confirm, LLM draft)?
What Jev decides vs code
| Jev | Code |
|---|---|
| Narrow typed judgments | Control flow, side effects, composition, escalate |
Related
Calling hosted Jev from your laptop, plus independent local runtimes, is on the local deployment checklist. Product notes: Compare.