# Show HN: A Firewall for AI agents with auditing

> Source: <https://github.com/beebeeVB/trajeckt/>
> Published: 2026-06-29 23:52:48+00:00

Hi all,

As there are more and more agents in the internet; Security is going to be a big problem. Currently, the problem is solved using a LLM to guard Agent but this creates the problem of hallucination and latency, so I coded a firewall in rust that runs under five miliseconds. This works by creating a plan and enforcing the plan; for per action call, this enforces using the Model context protocols list and for sequence it tracks every single tool call and data flow; there is also a taint mechanism where if the agent reads something outside of the user context, it flags and adds more security mechanism. It works by using a DAG.

Comments URL: [https://news.ycombinator.com/item?id=48726867](https://news.ycombinator.com/item?id=48726867)

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