Jev Decisions

A Claude skill that answers with decisions instead of paragraphs: given a state and typed questions it returns JSON with probabilities and confidence, a few dozen tokens, zero explanation, ready for code to threshold on.

DevMortimer's Pi extension hands batched Choice, Score, and Noul judgments to Jev: a typesafe_evaluate agent tool, a terminal playground, and a typed API other extensions reuse, with daily request, token, and dollar caps.

Amidabuddha's local stdio MCP server wraps TypeSafe's Jev in a single jev_decide tool: batched choice, score, and noul judgments with probabilities and token usage, leaving thresholds and actions to the caller.

OpenRouter's listing for typesafe/jev-1.14: TypeSafe's structured decision model at $0.042 per million input tokens with output free, a 262K context, and one provider behind the OpenRouter Decisions API.

An independent agent skill that walks a coding agent through designing a bounded Jev decision layer: contract, criteria, error behavior, fallback, and evaluation plan first, then scaffolding through TypeSafe or OpenRouter.

Python with a smart if: .jev files add the ~ question operator and jev/case blocks that Jev answers with a number or a label, never text. Files are rewritten to plain Python at import time; every ~ is one paid TypeSafe API call.

Dependency-free TypeScript SDK that turns Jev Noul, Choice and Score answers into named decisions: enter/exit thresholds with hysteresis, nested decision trees settled in one call, a JSONL journal, threshold replay without inference and Brier calibration.