@yelkhayami built an extension that judges tweets as they are typed. They say it reacts to each keystroke and that an hour of testing cost half a cent.

Youssef 🚜 (@yelkhayami) published this on 2026-09-17. @yelkhayami built an extension that judges tweets as they are typed. They say it reacts to each keystroke and that an hour of testing cost half a cent. i got early access to jev by @typesafeai and decided to build a little extension that judges my tweets while i type them it runs so fast it can react to each keystroke, and it's basically free, after testing for an hour it cost me half a cent 🤯 https://t.co/HRU6q9kunq How Jev or TypeSafe is used, in the post's own words: “i got early access to jev by @typesafeai and decided to build a little extension that judges my tweets while i type them it runs so fast it can react to each keystroke, and it's basically free, after testing for an hour it cost me half a cent 🤯 https://t.co/HRU6q9kunq” The post does not name a separate audience. It is for people reading what @yelkhayami shows here (it includes media).