Congrats! How is the security posture? Without really comparing isolation and sandboxing etc.. comparing with E2B is not the same.
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...