agent-sandbox vs CubeSandbox
Self-hosted AI-agent sandboxes compared
agent-sandbox and CubeSandbox both provide self-hosted environments for running untrusted AI-agent workloads, with E2B-compatible interfaces. agent-sandbox is built around Kubernetes sandbox management, while CubeSandbox runs workloads in KVM-based microVMs and supports single-node or multi-node deployment.
agent-sandbox: Run Isolated Sandboxes for AI Agents
Agent-Sandbox provides a self-hosted Kubernetes service for creating and managing isolated environments for AI agent code and actions. It wraps sandbox lifecycle operations in a REST API and MCP server, with E2B compatibility.
CubeSandbox: Run Secure, Fast Sandboxes for AI Agents
CubeSandbox is a self-hostable sandbox service for running untrusted AI-agent workloads in hardware-isolated microVMs. It combines E2B SDK compatibility with snapshots, network controls, and single-node or multi-node deployment.
| agent-sandbox | CubeSandbox | |
|---|---|---|
| Language | Go | Go |
| License | Apache-2.0 | NOASSERTION |
| Stars | 218 | 12.8k |
| Forks | 21 | 1.2k |
| Last analyzed | Oct 3, 2026 | Oct 3, 2026 |
Key differences
- agent-sandbox uses Kubernetes as its sandbox foundation and requires Kubernetes 1.28 or later; CubeSandbox uses KVM-based microVMs and requires Linux infrastructure with KVM.
- agent-sandbox provides REST and MCP interfaces; CubeSandbox provides REST APIs compatible with the E2B SDK interface.
- agent-sandbox includes a web UI and stores templates, blueprints, and sandbox state in Kubernetes objects; CubeSandbox offers pluggable volume backends, snapshots, cloning, and rollback.
- agent-sandbox is licensed Apache-2.0; CubeSandbox's metadata reports NOASSERTION, while its README states Apache License 2.0, so verify the applicable terms.
- The supplied repository snapshot lists 218 stars for agent-sandbox and 12.8k for CubeSandbox; these figures alone do not establish production maturity.
- agent-sandbox targets teams operating Kubernetes and provides browser or desktop environments; CubeSandbox emphasizes microVM isolation, network controls, and infrastructure for code-execution services.
Choose agent-sandbox if you…
- need a Kubernetes service with REST and MCP sandbox management.
- want a web UI, warm pools, and Kubernetes-object storage for sandbox state.
- need browser or desktop environments, or E2B-compatible integrations on Kubernetes.
Choose CubeSandbox if you…
- need per-sandbox microVMs with dedicated OS kernels and network controls.
- want to deploy on Linux with KVM, either on a single node or across multiple nodes.
- need snapshot, clone, and rollback workflows for sandbox environments.
Compare the numbers side by side, or add more projects
This comparison is generated with AI from the OSRepos analyses of both projects. Always check each project's repository and documentation before choosing.