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)

1. Which judgments are atomic (one Choice / Score / Noul each)?
2. Which state fields does each question need — and what stays out?
3. Which thresholds will code own (confidence / P(yes))?
4. Where does low confidence go (human, confirm, LLM draft)?

What Jev decides vs code

Next

→ Support routing

Sources

• Quick start
• SDK
• How to build