CrabTrap: An LLM-as-a-judge HTTP proxy to secure agents in production

Hacker News / 4/22/2026

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Key Points

CrabTrap is presented as an HTTP proxy that uses an LLM as a “judge” to help secure AI agents when they are running in production.
The approach focuses on inserting an additional inspection/control layer into the agent’s HTTP traffic, rather than relying only on upstream safeguards.
By routing requests and evaluating them with an LLM-based rubric, CrabTrap aims to detect or mitigate risky behaviors before they reach sensitive systems.
The article highlights the project’s open-source nature and frames it as a practical deployment pattern for production-grade agent security.
Overall, it emphasizes using LLM judgment in an inline proxy position to improve safety and governance for agent workflows.

Points: 111

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