System One · open source · on npm
NotJev : Kev
Typed decisions for software. Send state. Ask choice, score, or noul. Get probabilities your app can trust.
npm · @kev-ai
Install
Three public packages. Start the server, call the SDK, or wire MCP into your agent host.
@kev-ai/sdk
TypeScript client · choice / score / noul
npm install @kev-ai/sdk
@kev-ai/server
Decision API + playground · kev-server
npm install -g @kev-ai/server
@kev-ai/cli
CLI + MCP · kev · kev-mcp
npm install -g @kev-ai/cli
# run locally
$ npm i -g @kev-ai/server @kev-ai/cli
$ kev-server
$ kev demo
OpenJev held-out · qwen3.5:9b · GPU
Public suite accuracy — why teams pick NotJev : Kev over chat prompts.
83%
Banking77
choice · 77 labels
86%
CLINC OOS
choice · 151 intents
86.5%
AG News
choice · 4 topics
89.5%
SST-5
score · within-1
81%
Toxicity
noul gate
Workbench
Fixed showcase — same shape as production System One: state in, typed answers with confidence bars out.
Route tickets and decide whether to escalate.
Try it →State
Questions
urgent noul Needs a reply within the hour?
team choice billing · shipping · technical
tone score calm · annoyed · furious
showcase · fixed response
Why NotJev : Kev
The open control plane for System One. Competitive accuracy without proprietary weights or a closed API.
Apache-2.0, self-host
No vendor lock-in. Run on your laptop, GPU box, or cluster — your keys, your data.
Bring your own model
Ollama, vLLM, OpenAI, Gemini-compat. The control plane is open; the brain is yours.
Calibrated numbers
choice, score, and noul return distributions you can threshold — not chat to parse.
Competitive held-out accuracy
Matches or beats published Jev Banking77 held-out (~82%) at 83% with qwen3.5:9b.
Docs like a serious OSS project
Quick start, API, SDKs, CLI, MCP, backends, and benchmarks — then npm i @kev-ai/sdk and ship.