TypeSafe’s Jev (System One) is a decision model: Choice / Score / Noul — not a chat model. The hype is real; the hard part for most builders is how to ask and which repos to learn from first.
This post is a community learning path (not affiliated with TypeSafe). We don’t resell the API. We point you at public docs/repos and ship copy-paste question templates.
Start here (four steps)
- Official use-case map
- hello-jev — three question types + confidence branching
- jev-ultrafast — browser agent chooses actions/elements fast
- fast-jev-compaction — KEEP/DROP tool-result compaction
We mirrored this path on our docs site:
https://www.jev-tutorial.org/tutorials
Also browse chaptered use cases (routing, moderation, agent guardrails) under https://www.jev-tutorial.org/use-cases.
What we sell (optional)
A template pack: ready Choice/Score patterns (ticket routing, moderation, livestream comment labels via paste — not DOM scraping). Price target ~$49 one-time on Gumroad when the buy link is live. CTA on the site: Get the template pack.
Hard no’s
- Not an API relay / Gateway reseller
- Not money/refund final decisions
- Community-sourced indexes ≠ official endorsement
- Accuracy not guaranteed — use confidence gates + humans
Why this beats a random awesome-list dump
Directories are swallowing new GitHub repos daily. A short path + a few runnable killers beats 50 undifferentiated links.
If you only have an hour: use-case-map → hello-jev → jev-ultrafast → compaction.
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