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Designing an eval harness for prompt-injection detection: what measuring my defenses actually taught me

This story is from 2026-09-22. It is preserved in the archive; the latest stories are on the live feed.

Designing an eval harness for prompt-injection detection: what measuring my defenses actually taught me Context I built a LangGraph agent — a travel concierge that retrieves hotel docs from a RAG corpus, reads a fake CRM, searches the web, and sends emails — and then I broke it on purpose. My testb…

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  1. 2026-09-22 05:08 · DEV Community — AI
    Designing an eval harness for prompt-injection detection: what measuring my defenses actually taught me

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