TypeSafe ships an official Claude Code skill for building on Jev
TypeSafe released an official Claude Code skill of about 1,300 words that forces the agent to pull live docs first, keep rules and lookups in normal code, and use Jev only for judgment calls, citing a test where 13 questions in one call were 12.2x cheaper.
TypeSafe shipped an official skill that teaches Claude Code how to build on Jev. It is one of the cleanest skills I've read. About 1,300 words. Almost every line blocks the agent from guessing. What it forces Claude Code to do: ➔ Pull TypeSafe live docs before any code lands ➔ Keep rules, maths, and lookups in normal code; reserve Jev for judgment calls ➔ Pick the right question type: Choice for one of a set, Noul for yes or no, Score for how much The money line: ask independent questions in one call, not one by one. TypeSafe ran that pattern in their cookbook. 13 questions in a single call came back 12.2x cheaper and 10x faster with the same answers. Install in Claude Code: claude plugin marketplace add typesafe-ai/skills claude plugin install typesafe@typesafe-ai The skill is free and MIT licensed. You'll need a TypeSafe API key to run Jev.
This post quotes another post: x.com/kaiandai/status/2103871840066130241