Check an agent prompt
before you trust it.

Paste a system prompt and the tool script that comes with it. PromptShield masks the private data hiding inside, catches prompt-injection attacks, and inspects the script for risky behavior — before any of it reaches your agent. Pasted scripts are only read, never executed.

Agent prompt

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Tool script optional

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Grounding check Verify + Rerank

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Paste the policy or source doc the prompt claims to follow. PromptShield checks the prompt's claims against it (Verify) and surfaces the passages that matter (Rerank). Verdicts come with evidence, not proof; a claim marked supported can still be wrong, so the passage behind every verdict stays visible.