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judgment

Rust crate that turns TypeSafe System One (Jev) answers into verified, testable Rust types — typed choice/noul/score questions, a Fake backend that…

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From the repository

Typed, calibrated judgments from System One models: a decision written as a .jud file or as Rust types, answered by a model, verified before it is read, testable with no key. Rust crate, jud CLI (cat event.json | jud triage.jud), Claude Code plugin. Not affiliated with TypeSafe AI.

calibrationclassificationjevsystem-onetypesafe

How builders describe it

Typed, calibrated judgments from System One models: a decision written as a .jud file or as Rust types, answered by a model, verified before it is read, testable with no key. Rust crate, jud CLI (cat event.json | jud triage.jud), Claude Code plugin. Not affiliated with TypeSafe AI.

Rust crate that turns TypeSafe System One (Jev) answers into verified, testable Rust types — typed choice/noul/score questions, a Fake backend that checks scripted answers like a server would, and .jud rubric documents that keep thresholds beside the questions.

The decision Jev makes

Any Jev question: yes or no, a choice, or a score, from your own stack.

Where it fits

Official and community SDKs, MCP servers and integrations for calling Jev from the languages and tools you already use. All 625 sdks & integrations projects →

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