Tenki Sandbox just landed on Crabbox alongside AWS, Azure, E2B, and Modal as a supported provider. If you're already using Crabbox, you can now spin up Tenki sandboxes directly.
Containers share one OS kernel, like apartments on a shared foundation. Crack that layer and every unit is exposed.
MicroVMs give each app its own kernel behind a hardware boundary, so a kernel-level break-in stays contained.
Also…they start in under 2 seconds.
Unpopular opinion:
Taking the human out of the development loop makes debugging harder, not faster.
Every autonomous iteration builds on the last. If something goes wrong on loop 3, by loop 10 that mistake is buried under 7 layers of AI-generated code that all looks correct.
Here's a quick test we did: Opus 4.8 vs Fable 5
This is what Tenki Code Reviewer found:
Opus-written PR:
3 high-severity bugs across 22 files and 1,615 lines of code
Fable-written PR:
zero issues across 22 files and 1,134 lines of code
Same repository, same prompts.
Small
Teams treat their CI pipeline like a junk drawer.
Every quarter someone adds a step. Nobody ever removes one.
Then you wonder why builds take 20 minutes.