Jev in production › SDKs and workflow integrations
zio-typesafe-ai
Scala 3/ZIO client for Jev's System One API with fully typed requests and responses and compile-time-validated Choice and Score criteria.
- Use
- SDKs and workflow integrations
- Industry
- Developer tools
- Form
- Open-source tool
- Stage
- Announced
- Listed
- 2026-09-25
- Found via
- github
- Repository
- jamesward/zio-typesafe-ai
- Stars
- 5
- Forks
- 1
- Last push
- 2026-10-09
- Language
- Scala
- License
- Apache-2.0
The README opens with
A Scala 3 / ZIO library for TypeSafe AI's Jev / System One API — a "System One model" that answers typed, atomic questions about a piece of state instead of generating text.
- Typed end-to-end. No raw JSON, no stringly-typed answer lookups. - Ask several questions in one round-trip via a NamedTuple; the typed answer comes back keyed and shaped exactly like the questions you asked. - Illegal states are unrepresentable: ChoiceCriteria / ScoreCriteria can't be built out of range (1–255 options, 2–10 levels), and every noul / confidence / probability is a Probability — a Double provably within [0.0, 1.0]. - Built on ZIO HTTP's Client.
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For the project's own README, linking back here:
Also used for sdks and workflow integrations
- JarvisCore (Prescott Data) 434 ms median warm
- Jev for Apple Foundation Models 40–150ms
- Laravel Jev 70–500ms
- JevForce 11.1×
- Semantic Validator 90
- openpave-jev 35 to 500 milliseconds
- Yao Agents 70–500ms
- Juspay NeuroLink ~$0.00002/decision