Jev guide: ten steps to move calls off the LLM
A step-by-step walkthrough of replacing agent decisions with Jev, from sorting calls and the Choice/Score/Noul primitives to pip install, Playground testing and an end-to-end gate.
Jev is the Bitcoin moment for AI: 10,000 decisions cost 42 cents instead of $300 what it is, how to use it, and how to find the calls in your own agent that shouldn't cost what they cost: step 1 → sort your agent's calls first. can you list every valid answer? would a human settle it at a glance? does it fire often enough for milliseconds to matter? three yeses and the call leaves the LLM step 2 → send state plus typed questions, get typed probabilities back, no text generated at all. nothing to parse, and no fifth option nobody defined step 3 → every fork becomes one of three primitives: Choice picks from up to 255 options, Score places state on a scale you define, Noul returns the probability of yes step 4 → install in five minutes: pip install typesafe-sdk in a fresh venv, your key in an environment variable, the official skill via npx if a coding agent writes your calls step 5 → test one decision in the Playground before writing app code: paste a ticket as state, add one Noul and one Choice, change one field and watch how far the distribution moves step 6 → wire it end to end: three questions, one call, all evaluated in parallel. your code owns every branch after the answer step 7 → build the gate that ships: code counts files, lines and test status, Jev answers ship, return or escalate, and blast radius gets checked before the verdict step 8 → ask eight questions in one call, since a sixth or seventh barely moves the latency. anything that needs a fresh result goes in a second request step 9 → rebuild the menu every turn: the workers online right now, the sources you hold right now, filtered in code before Jev chooses step 10 → add the harness: a middleware that checks every tool call before it runs, and a router that picks the cheapest model able to finish the task Browser Use ran a live flight search on it in 7 seconds for $0.0039. one developer classified 1,018 research papers for $0.08 total. another sorted 500 emails for 3.5 cents the rule above all ten: if code already solves it, keep the code now open your last agent run and count the forks that never needed a sentence the full build with the code is in the article below
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