System One adapter (Python)

Official drop-in TypeSafeClient replacement backed by OpenAI, Anthropic, and compatible LLM APIs, for comparing Jev against chat models.

Drop-in TypeSafeClient replacement backed by LLM APIs

How it uses Jev

A drop-in replacement for typesafe sdk 's system one evaluation API, backed by LLM APIs instead of TypeSafe.

Getting started

Unlike TypeSafeClient , the client is configured with how the LLM should answer, and each call names a provider alongside the model :

Source: community catalog. Details and metrics reflect the published community snapshot and are not a performance endorsement. Documentation details extracted from GitHub · the README.

Keep exploring

Similar to System One adapter (Python)

Browse all
lichen project preview
Applications
A local, API-compatible replacement for Jev, TypeSafe's System One model
jeff project preview
Applications
A self-hosted drop-in replacement for TypeSafe's jev, powered by GliFormer.
system-one-adapter-rust project preview
Benchmarks & research
Rust port of TypeSafe system-one-adapter (LLM-backed system_one evaluations)
Jev for robotics
EmbodiedJev: MuJoCo robot decision workbench with MiniCPM5-2B, Jev and compatible model APIs
dsh-jev-adapter project preview
Agent tooling
Use the Jev (System One) decision-model paradigm with any OpenAI-compatible LLM — no TypeSafe key required. A jev_decide tool for DeepSeek Harness (dsh).
stuntd project preview
Demos & playgrounds
Local proxy that learns your app's typed LLM decisions and answers them with a Laya head. Jev and OpenAI compatible.
jev-guardrails project preview
Benchmarks & research
Comparing LLM-as-judge vs TypeSafe Jev for agent guardrails: same rules, same agent, measured on cost, latency, calibration and coverage.
hunch project preview
Browser & computer use
⚡ Browser agent that acts on a hunch: Jev (TypeSafe System One) picks every click in ~150 ms, an LLM is only needed when confidence drops. Zero-dependency Python on top of agent-browser.
jev-chat-windows-deepseek-jev project preview
Windows 微信回复助手:DeepSeek 官方生成话术,TypeSafe JEV 官方判断排序,支持可取消的 3 秒自动发送。