Arcveil routes mandate judgment clauses to Jev to block prompt injection

Arcveil @Arcveil_AIOriginally posted 2026.09.20

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Prompt injection works because the model can write the next instruction. A structured evaluation model cannot. Jev's only output is typed a probability, a label, a point on a scale. Text that tries to hijack an agent can move the number. It cannot become a command. That is why the judgement clauses in an Arcveil mandate go to Jev and not to a chat model. Built and tested

This post quotes another post: “x402 clients use Jev to score tool selection”