Putting Jev inside a chief-of-staff agent to route work to the next worker
The author uses Jev to make typed 'which worker goes next' decisions for an agent, returning options with confidence scores at about $0.000042 per decision, and lists real-world cases including Browser Use.
i think Jev is the part most AI agents are missing every agent makes the same small calls all day: which tool, which worker, retry or stop, safe or not. most of them pay a frontier model for each one Jev by typesafeai does only that job. you give it the state and the allowed answers, it returns a typed decision with a confidence score. it can't write, and it can't invent an option you didn't give it I put it inside a chief-of-staff agent and gave it one question: which worker goes next? research 0.88 write 0.09 review 0.03 0.88 clears the 0.85 bar, so the job goes to research. anything below goes to a human the price is the whole point. Jev 1.13 costs $0.042 per 1M input tokens and output is free. at ~1k tokens per decision: 1 decision = $0.000042 10,000 decisions = $0.42 builders already proved it outside my setup: > Browser Use: flights found in 7s for $0.0039 > 1,018 research papers classified for $0.08 > 500 emails triaged for 3.5¢ > a Claude session cut from 1M to 86K tokens in ~1s the split: the LLM thinks Jev decides code executes the full Jev setup and the router are in the guide below
This post quotes another post: “Long read: how to build a Jev-powered agent stack”