pi-jev

What it is

Semantic tool routing and typed decisions for the Pi coding agent powered by TypeSafe Jev (System One).

What the README says it does

• Semantic Tool Router (jevfindtools): Automatically searches registered inactive tools and additively activates only the tools needed for the user's specific prompt or workflow.
• Typed Judgments (jevevaluate): Run fast, calibrated System One decisions directly from the agent using Choice, Noul (yes/no probability), and Score primitives.
• Custom Jev Endpoint: PIJEVBASEURL / TYPESAFEBASEURL points the TypeSafe client at Jev-compatible local servers or proxies such as Laya laya-serve.
• Dynamic Evaluations (/jev test ): The active model designs the Jev question schema for a free-form prompt, then Jev evaluates it.
• Automatic Mode (opt-in): --jev-auto / PIJEVAUTO=1 / /jev auto on routes tools and suggests skills before every prompt. Off by default.

From the project’s README.

Getting started

From the README:

pi install npm:pi-jev

Where the decision sits

pi-jev calls the hosted decision API rather than running its own weights. That keeps the project small and means its behaviour moves whenever the vendor ships a new model version. It also means an API key and a network round trip sit in the path of every decision.

Models it references: Jev.

How active it is

Created 2026-09-17, last pushed 2026-10-29, 72 stars and 14 forks when we read it on 2026-11-02. Everything in this category is weeks old at most, so a stale push date means something different here than it would on a mature project. Check the repository before you depend on it.