Every Guardrails & Safety comparison and buyer's guide for building AI agents — 3 pieces and counting. Each is a head-to-head or a “best X for Y” roundup with a sources-backed verdict.
Three open-source tools promise to catch prompt injection before it reaches your agent. Their GitHub status pages tell you more about whether detection works than any benchmark does.
You cannot patch prompt injection out of a model. The defenses that actually hold treat it as an architecture problem — and start by taking away what a hijacked agent could do.
They get filed together as "LLM guardrails," but they guard three different things — format, flow, and content. Picking by stars gets you a tool that protects the wrong layer.