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TypeSafe.Jev

.NET library that turns C# enums into Jev Choice questions and returns real enum values with probabilities and confidence.

Libraryproduction
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Overview

TypeSafe.Jev is a .NET package for asking Jev typed questions and getting answers a switch statement can use. You declare an enum, optionally with descriptions per member, and the enum becomes the Choice options; the answer comes back as that enum, so the compiler can flag a missing branch when you add a member. Noul and Score questions are also supported, with confidence treated as a first-class number for auto-approval thresholds.

It targets net8.0, net9.0 and net10.0 and has a single dependency, enforced by CI. It is trim- and Native AOT-safe, with a native binary built and run on every build. Retries match the official SDKs (408, 429, 5xx, jitter, Retry-After, per-attempt timeouts and an overall budget) without Polly, and logging and OpenTelemetry are built in. Examples and tests run offline without a key. Version 1.0.0 is on NuGet.

What the decision model decides

TypeQuestionAnswers
ChoiceWhich category does this message belong to?Billing · TechnicalIssue · FeatureRequest · Other

How it works

  1. Declare an enum with descriptions.
  2. Call SystemOneAsync with state and questions.
  3. Read res.Choice(...).As<YourEnum>() and its confidence.
  4. Auto-approve above threshold; route the rest to a human.

Strengths

  • Answers as real enums with compile-time exhaustiveness.
  • Native AOT and trim safe.
  • Single dependency; built-in logging and OpenTelemetry.
  • Offline-testable.

Caveats

  • Requires C# 12+ and a TypeSafe key.

Getting started

dotnet add package TypeSafe.Jev

At a glance

Type
Library
Status
production
Language
C#
Runtime
.NET library
Has code
yes
Has tests
yes

Use cases and integrations

How curated lists describe it

  • Typed AI decisions for .NET: ask Jev (TypeSafe AI System One) yes/no, choice and score questions and get a C# enum with calibrated probabilities back.

    hellogumbo/awesome-jev

Frequently asked questions

What is special about it?

Your C# enum is the question, and the answer comes back as that enum.

Does it work with Native AOT?

Yes, it is trim- and AOT-safe, verified on every build.

Which frameworks are supported?

net8.0, net9.0 and net10.0.

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