CoolJev is an independently authored Jev guide and learning site. It is not affiliated with or endorsed by TypeSafe AI.
Who it is for
For developers and technically minded teams connecting natural-language decisions to code. Read the full handbook, explore four scenarios, adapt templates and download code.
What you can do here
- Discover projects：what seven Jev projects do, the role Jev plays, how to start and their limits.
- Play a game：Who Is the Undercover and more, with every Jev decision open for replay; no sign-up needed.
- Scenarios and workspaces：four scenarios such as review classification and ticket triage, with editable templates; online workspaces are a free public beta with daily credits.
- The Jev handbook：complete free bilingual chapters, PDFs and seven runnable Python examples.
Content and evidence
API descriptions cite official sources. Teaching inputs, answers and explanations are authored, not measured model outputs. Offline tests verify program behavior only.
The handbook and accompanying basic examples remain free. The site offers review classification and ticket triage in public beta, without credit purchases, paid membership, affiliate links or paid sponsorships.
Read handbook sources and edition notesMaintainer
CoolJev is written and maintained independently by Yin Mu (尹睦). For corrections, ideas or collaboration, reach out on X at @dunduncoming.