TypeSafe Releases Claude Code Skill for Building on Jev
Mnimiy describes an official TypeSafe skill that teaches Claude Code to structure calls to Jev, batching questions into one request to cut costs by 12.2 times in TypeSafe's cookbook. The post also outlines fallback strategies for when Jev's 70-500 ms checks fail or go silent.
Original post · 1 min read
TypeSafe just dropped the official skill that teaches Claude Code to build on Jev
left alone, coding agents ask Jev one question per call and guess the field names.
this skill rewires the order before a single line gets written:
docs -> behaviour -> judgments -> one request -> code decides
every rule in it, broken down on two pages:
> see the failure behind each of its 11 instructions
> pick Choice, Noul or Score in one glance
> paste the prompt skeleton straight into your agent
12.2x
the bill drop when 13 questions share one call, measured in TypeSafe's cookbook.
a short file that does a lot of the thinking for your agent.
Mnimiy @Mnilaxit's f*cking insane
Jev sat between GPT and me, killing every draft that broke my rules before i saw it. good setup.
then Jev did not answer. the agent decided silence was safer and stopped sending me anything at all. took a second agent to unstick it.
your checker needs a branch for the moment it goes quiet:
> let it through tagged unverified and keep moving
> hand the risky span to the big model
> park it in a queue and retry in a minute
> wake a human when the action is irreversible
70-500 ms
one Jev call, by TypeSafe's own number. a half-second checker still takes down the whole pipe…