Post · Safety & guardrails
A CAPTCHA rebuilt with Jev
The browser measures how you fill the form.
Open x.com ↗I rebuilt CAPTCHA with Jev
The browser measures how you fill in the form. Server turns that into a few plain sentences, and Jev decides: person or bot.
Blog post with source code in the comments:
How builders describe it
The browser measures how you fill the form. Jev decides.
The decision Jev makes
Allow, flag or escalate a message, tool call or action.
Where it fits
Screening messages, tool calls and outputs before they cause trouble. Jev gives a fast, calibrated verdict that can sit in front of every request or agent action. All 229 safety & guardrails projects →
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