Jev is for the parts of your agent that just decide something.
which tool to use next. is this worth keeping. does a human need to see this.
those aren't writing jobs, and you're paying a big model to do them anyway.
four good places to put it:
1/ picking the cheap path before the expensive one runs
2/ checking a step before it actually happens
3/ checking the result before it goes out
4/ trimming a long run down to what still matters
start with the last one. easiest to add and you'll notice it on the bill.
Check out the full guide on Jev it the article below ↓