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A comment on Launch HN: Rivet (YC F25) – Scale and Orchestrate Agents on S3.

Re:Launch HN: Rivet (YC F25) – Scale and Orchestrate Agents ... by SriniK on Thursday November 05, 2026 @03:07PM (#50383787)
Congrats! How is the security posture? Without really comparing isolation and sandboxing etc.. comparing with E2B is not the same.
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Re:Launch HN: Rivet (YC F25) – Scale and Orchestrate Agents ... by NathanFlurry on Thursday November 05, 2026 @03:27PM (#50384035)
Hey! Rivet includes a library for running untrusted user code called agentOS: https://rivet.dev/agentos/

It provides Linux-compatible sandboxing using V8 / WebAssembly. Supports full POSIX filesystems, networking stacks, and process trees. Security-wise, it's the same model as Cloudflare Workers & Chromium.

Rivet is frequently used for running the harness outside of the sandbox. Wrote a bit about why here: https://rivet.dev/blog/2026-07-27-run-your-harness-outside-t...

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