Use cases / Tooling and open replicas
Tooling and open replicas
SDKs, MCP servers, CLI plugins, and community models that copy the System One interface.
Directory entries
typesafe-ai/skills: official agent skill
Tool by TypeSafe AI, added 17 Sep 2026
VerifiedNot yet tested by us
An MIT-licensed skill that teaches Claude Code, Codex, and other agents to call Jev.
JevTooling and open replicas
jev-mcp: an MCP server for Jev
Tool by jkudish, added 17 Sep 2026
VerifiedNot yet tested by us
Lets Claude Code, Claude Desktop, and Codex call Jev and branch on the probabilities.
JevTooling and open replicas
llm-typesafe plugin for the LLM CLI
Tool by Simon Willison, added 22 Sep 2026
VerifiedNot yet tested by us
Adds Jev to the llm command-line tool and Python library.
JevTooling and open replicas
openjev (now SemIf): a Jev-style model on one RTX 3090
Open replica by TheoLeeCJ, added 16 Sep 2026
VerifiedNot yet tested by us
Runs a Jev-style decision model locally on a single consumer GPU.
Other modelTooling and open replicas
jevlike: an open reimplementation
Open replica by vinnylarouge, added 16 Sep 2026
VerifiedNot yet tested by us
Trains a small model to score a changing list of options in one forward pass, with Doom, chess, and Wikispeedia demos.
Other modelTooling and open replicas
Kev: Jev-like models on Qwen
Open replica by Community, added 21 Sep 2026
PlausibleNot yet tested by us
Open Jev-like decision models built on Qwen, with a TypeSafe-compatible API.
Other modelTooling and open replicas
This category sponsor slot is open. Sponsors are labeled and never change a verdict.See sponsorship