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jev-net

Lightweight .NET client for TypeSafe's System One / Jev API with one dependency, ported faithfully from the official Python SDK.

Libraryproduction
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Overview

Jev.Net is a community .NET client for TypeSafe's System One API. You ask small typed questions (Noul, Choice, Score) about text or structured state and get probabilities back. It is a faithful port of the official Python SDK as of version 0.7.4: same request shape, protected headers, exception hierarchy, message text, retry rules and dotted field paths for malformed responses, with a test suite mirroring upstream file by file. Differences forced by .NET are listed.

Its main selling point is a single dependency (Microsoft.Extensions.Logging.Abstractions); retries, backoff, Retry-After handling and per-attempt timeouts are implemented in about a hundred lines, and CI fails if a second dependency appears. It targets net8.0 and net10.0 and is trim and Native AOT compatible. The README points to TypeSafeAI.Net as an alternative with dependency-injection and Microsoft.Extensions.AI middleware for apps that want that shape.

What the decision model decides

TypeQuestionAnswers
Yes / noIs this about billing?yes · no
ChoiceWhat is the customer's tone?calm · frustrated · angry
ScoreHow urgent is this ticket?can wait · this week · today

How it works

  1. dotnet add package Jev.Net and set TYPESAFE_API_KEY
  2. Build a dictionary of typed questions
  3. Call SystemOneAsync with the state
  4. Read typed answers from Nouls, Choices and Scores

Strengths

  • Only one dependency, enforced by CI
  • Native AOT and trimming compatible
  • Behaviour matches the official Python SDK
  • Mirrored test suite

Caveats

  • Community package, not affiliated with TypeSafe
  • Fewer framework integrations than TypeSafeAI.Net

Getting started

dotnet add package Jev.Net

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

  • A lightweight .NET client for the TypeSafe AI API (System One / Jev).

    wh000wh000/awesome-jev-live

  • A lightweight .NET client for the TypeSafe AI API (System One / Jev). One dependency; a faithful port of the official Python SDK.

    hellogumbo/awesome-jev

Frequently asked questions

How is it different from TypeSafeAI.Net?

Jev.Net prioritises one dependency and parity with the Python SDK; TypeSafeAI.Net offers DI and Microsoft.Extensions.AI integration.

Does it support Native AOT?

Yes. A smoke app is published as a native binary on every build.

Is it official?

No. It is a community package not endorsed by TypeSafe AI.

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