CubeSandbox
An open-source RustVMM/KVM sandbox service with an E2B-compatible API.
Routing Summary
Consider when owning the sandbox data plane is a real requirement. Compare managed Daytona and Vercel Sandbox before taking on fleet operations.
Verified documentation
The README documents single-node/cluster operation, egress credential injection, volumes, and snapshot operations. It also lists remaining E2B compatibility work. ARM64 support is announced while quick-start text still says x86_64/KVM: verify the chosen deployment path. Startup and memory figures are upstream benchmarks, not local proof. Source: official documentation, checked 2026-09-25
Evidence status
Documentation review only; no account setup, workload benchmark, or isolation test was performed. Keep rules, skills, approvals, source history, and proof in Kevin's control plane. Provider execution must remain replaceable. See Agent Sandboxes for the comparison contract.
Timeline
- 2026-09-25 | Recovered this provider identity from the July 7 test2 snapshot and rewrote it against current primary documentation. Source: test2 snapshot