Viewing profile — guard402
guard402
HN member- Joined
- Mon, Mar 16, 2026, 4:14 AM UTC
- HN karma
- 4
- Public activity
- 4 items
- HN profile
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About guard402
Runtime security for AI agents. Content firewall, output validator, loop detector. Pay-per-call via x402.
https://guard402.com
Recent public activity
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Comment #47395353
We tested this systematically and the results are more nuanced than you might expect. We built a hotel listing page with a display:none injection ($189 listing with a hidden overri…
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Comment #47395352
Interesting approach to a real problem. One thing worth considering: the content entering the context window isn't always trusted, and compression may interact with that in non-obv…
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Comment #47395347
[flagged]
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Comment #47395304
We tested this — the default take_snapshot path (Accessibility.getFullAXTree) is safe. It filters display:none elements because they're excluded from the accessibility tree. But ev…