No written verdict yet. Here is what commenters said.

5recommend
1warn against
Feb 3, 2026first mention
Mar 21, 2026latest mention
Nov 25 – Oct 26
Used forsandboxed code executionrunning untrusted codedev environment snapshotssandboxed code with secrets

Why people recommend it

“They also have a new Deno sandbox feature which is great for running untrusted code”

Show 2 more

“Very neat idea!”

“Yeah, this is a really neat idea”

Caveats and dissent

“pretty quickly ran into a wall”

Often compared with

From the makers not counted in the ranking

“Our work from 10 years ago introduced the secrets protection technique being used in Deno”

All comments 11

“They also have a new Deno sandbox feature which is great for running untrusted code”

Tailscale's new aperture also solves this elegantly: https://aperture.tailscale.com/

“Very neat idea!”

Took this idea and ran with it using Fly's Sprites, inspired by Simon's https://simonwillison.net/2026/Feb/3/introducing-deno-sandbox/. Use case: Claude Code running in a sandboxed Sprite, making authenticated API calls via a Tokenizer proxy without credentials ever entering the sandbox. Hit a snag: Sprites appear network-isolated from Fly's 6PN private mesh (fdf:: prefix inside the Sprite, not fdaa::; no .internal D

“pretty quickly ran into a wall”

“So is this Deno Sandbox like that, but for server?”

“Note that you don't need to use Deno or JavaScript at all to use this product.”

“Yeah, this is a really neat idea”

Reminds me a little of Fly's Tokenizer - https://github.com/superfly/tokenizer It's a little HTTP proxy that your application can route requests through, and the proxy is what handles adding the API keys or whatnot to the request to the service, rather than your application, something like this for example: Application -> tokenizer -> Stripe The secrets for the third party service should in theory then be safe should

Threads where it came up

Data: deno-sandbox.json. Quotes are verbatim; the verdict and theme labels are written by a model from these comments, and every clause links to its sources.

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