Kev
Open-source System One decision engine. Typed choice / score / noul with calibrated probabilities. Self-host with Ollama or any OpenAI-compatible model. Apache-2.0.
How it uses Jev
NotJev : Kev is an open-source System One decision engine: Apache-2.0, self-hosted, Jev-style wire format. Bring your own model (Ollama, vLLM, OpenAI-compatible) — or start with the built-in mock.
Highlights
- System One primitives — choice · score · noul with calibrated distributions
- Self-host first — Docker-friendly, playground, OpenAPI
- BYO model — mock · Ollama · any OpenAI-compatible endpoint
- Production knobs — API keys, rate limits, LRU cache, audit log, OTel-style spans
- Agent-ready — MCP server, LangChain / LlamaIndex adapters, images[] in state
- Scale — cascadeChoice() for big taxonomies
Getting started
Requirements: Node 20+, pnpm 9.
- Languages
- TypeScript 82% · JavaScript 8% · CSS 5% · Python 3%
- License
- Apache-2.0
- Last activity
- Sep 2026
- Added
- 2026-09-23
- Stars at snapshot
- 7
- Status
- Community listing
Source: community catalog. Details and metrics reflect the published community snapshot and are not a performance endorsement. Documentation details extracted from GitHub · the README · the project website.