---
title: "Comment by Cai on \"The Bug That Made My Pentesting Agent Give Up\n\" | Hashnode"
description: "Good writeup. The engagement-scoped cache pattern you landed on is the right fix, and it mirrors something that shows up across agent systems more broadly: ever"
url: "https://hashnode.com/posts/the-bug-that-made-my-pentesting-agent-give-up/6a4c10e47b6d490fc0580230/comment/6a4d210bcb787c0e8278d7a7"
---

[Discussion](https://hashnode.com/posts/the-bug-that-made-my-pentesting-agent-give-up/6a4c10e47b6d490fc0580230)

Comment [The Bug That Made My Pentesting Agent Give Up](https://hashnode.com/posts/the-bug-that-made-my-pentesting-agent-give-up/6a4c10e47b6d490fc0580230)

[Cai](https://hashnode.com/@cailab)

[Jul 7](https://hashnode.com/posts/the-bug-that-made-my-pentesting-agent-give-up/6a4c10e47b6d490fc0580230/comment/6a4d210bcb787c0e8278d7a7)

Good writeup. The engagement-scoped cache pattern you landed on is the right fix, and it mirrors something that shows up across agent systems more broadly: every piece of cached state needs an explicit scope boundary that matches its validity domain. The same trap appears in idempotency keys on tool results. If a tool call returns a transient error and the result gets cached without a request-scoped idempotency key, the next call against a different target inherits the stale negative result. We started threading request IDs through the entire execution chain for the same reason you added engagement\_id. The silent-failure property you mention is the dangerous part. A cache that quietly accumulates false negatives is harder to detect than a crash.

[Chris Sheridan](https://hashnode.com/@auto-majicly)

[Jul 7](https://hashnode.com/posts/the-bug-that-made-my-pentesting-agent-give-up/6a4c10e47b6d490fc0580230/comment/6a4d210bcb787c0e8278d7a7#reply-6a4d27186c3c5c5a455900b4)

Well we appreciate the insight. We will keep our eyes on the silent-failure for sure. Today we should be finalising the multi-agent system that relies on specialists for specialist tasks. Hope that you'll tune in to watch it unfold.