Sentinel Gateway blocks agent hijack attempts

This is the right instinct: model-side guardrails are still advice, while execution-layer enforcement can actually block bad actions. The "eliminates any and all risk" line is the part to treat skeptically.

• –The product page explicitly frames the system as execution-layer enforcement with token-gated, cryptographically signed scopes and full audit trails: https://sentinel-gateway.com/
• –The Reddit post and Loom demo frame it as a walkthrough of 3-4 prompt-injection attempts, so the value prop is easy to understand but still needs third-party proof: https://www.reddit.com/r/artificial/comments/1rxtw4v/solution_to_ai_agent_prompt_injection_hijacking/ and https://www.loom.com/share/887679aa59c34a4e9109baafa353eecd
• –It seems strongest for regulated workflows where read-only review and narrow tool scopes matter more than model creativity.
• –If every agent path does not funnel through the gateway, or if scopes are too broad, the protection story weakens fast.
• –Claimed Claude/CrewAI/LangChain/AutoGen compatibility and on-prem deployment lower adoption friction, which matters for enterprise security buyers.