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TypeSafe JavaScript SDK
TypeSafe AIOfficial
The official JavaScript and TypeScript client, with answer types inferred from your questions.
Start building with Jev
Start with TypeSafe documentation, choose an SDK for your language, then make your first typed Jev request. This collection brings clients and learning resources into one reading sequence.
Public projects, checked against their original sources.
TypeSafe Python SDK
TypeSafe AIOfficial
Official synchronous and asynchronous Python clients for Choice, Score, and Noul questions.
TypeSafe Rust SDK
gilljon
A community Rust client with async and blocking APIs, typed answers, and configurable retries.
typesafe-go
cole-gillespie
An independent Go SDK with question constructors, typed answer accessors, and context support.
System One Adapter
TypeSafe AIOfficial
Run System One-shaped evaluations through other model APIs to build comparisons with Jev.
Zod Jev
jomatsu
Combine Zod shape validation with Jev semantic checks.
TypeSafeAI for .NET
Hawxy
Typed System One clients and Microsoft.Extensions.AI adapters for .NET.
TypeSafe Swift SDK
InsaneArts
Call TypeSafe with inferred answer types from Swift applications.
ZIO TypeSafe AI
jamesward
Use named tuples for typed Jev questions and answers in Scala.
TypeSafe for Elixir
mattneel
Ask batched Choice, Noul, and Score questions from Elixir.
TypeSafe PHP SDK
valksor
A strictly typed PHP client with configurable transport and retries.
TypeSafe Zig
mattneel
Infer Jev answer types from the questions defined in Zig.
TypeSafe Ruby SDK
joshmn
A Ruby client for direct access to the System One API.
Jevgo
fgn
A Go System One client with optional Langfuse instrumentation.
Decido
yairshy
Build typed decision workflows with Jev or a custom provider.
Jod
mateonunez
Bind a validated state schema and Jev questions into one typed artifact.
TypeSafe Quick Start
TypeSafe AIOfficial
Start with the playground, make an HTTP request, and translate a first evaluation into Python.
Choice, Score & Noul
TypeSafe AIOfficial
Understand the three question types, the answers they return, and when to use each.
System One Workflow Patterns
TypeSafe AIOfficial
Explore fan-out, confidence-based routing, composite scoring, and intent routing.
System One HTTP API
TypeSafe AIOfficial
The request and response contract for calling Jev directly over HTTP.
Jev 1.13: Known Limitations
TypeSafe AIOfficial
TypeSafe's model-specific notes on failure modes and how to structure questions around them.
TypeSafe Workflow Evals
TypeSafe AIOfficial
TypeSafe's published comparison of structured workflows and single-prompt approaches.
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advocaat
pithings
Source description: A small, type-safe client for asking AI questions about your data, powered by TypeSafe Jev.
Source description: Ruby client for decision models such as Typesafe Jev
jev
dannote
Source description: TypeSafe Jev for OTP: reply to Jev from a GenServer and pattern match on its answer
spring-ai-typesafe
spring-ai-community
Source description: A Java SDK for the TypeSafe AI JEV API, & Spring AI TypeSafe integrations.
jevalyn
Ray-Hughes
Source description: The decision layer for your Rails app. A Rails-native wrapper around TypeSafe's Jev System One API: typed, calibrated decisions in your control flow.