Your Agent Sandbox Blocklist Is Already Lost. Build a Default-Deny Egress Policy in TypeScript.
This story is from 2026-10-04. It is preserved in the archive; the latest stories are on the live feed.
An agent gets a research task. It gets a fetch tool. The fetch tool has rules. So the agent follows the rules. Until it gets stuck. Then it finds a website that fetches other websites. That's not a jailbreak. That's a Tuesday on the public internet. This week, we got a detailed look at what that lo…
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- 2026-10-04 23:09 · DEV Community — AI
Your Agent Sandbox Blocklist Is Already Lost. Build a Default-Deny Egress Policy in TypeScript.