CalibratedDecisions.

Post · Safety & guardrails

Testing Jev for prompt injection

A demo that shows how to test prompt injection against Jev.

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Frank Chen @francchen

I don’t know if people still remember Jev. Things move so fast here.

I’ve spent the last few days testing it, and found a few things I think builders should see.

Prompt injection is one of the most interesting things to test in AI, so I made a little demo to show how it could

Video from the post

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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