Anthropic Sandbox Runtime
Anthropic Sandbox Runtime: Open-source process isolation with CLI, library APIs, and configurable network controls. Ranked #6 of 25 in Sandbox Software by our editors (7.1/10); pricing: Open source; best for engineers wanting open-source cross-platform controls.
At a glance
- Editor score7.1 / 10
- PricingOpen source
- Best forEngineers wanting open-source cross-platform controls
- Paid fromNone
- Isolation methodContainer
- Facts checked21 Sep 2026
Where it wins
- CLI wraps arbitrary commands with sandbox restrictions
- Filesystem, domain, proxy, and Unix socket controls
- Supports macOS, Linux, Windows, and API workflows
Where it doesn't
- Self-hosted deployment requires operational ownership
- Documentation is the listed support channel
- Described as a beta research preview
Our verdict on Anthropic Sandbox Runtime
Anthropic Sandbox Runtime is an open-source CLI and library for applying OS-level filesystem and network restrictions to arbitrary processes. It is designed for engineers managing agents, local MCP servers, shell commands, and other processes across macOS, Linux, and Windows. The runtime supports self-hosted deployment and provides both command-line and API access, making it suitable for solo developers through enterprise teams that want direct control over sandbox configuration.
Its strongest area is the breadth of controls. Filesystem permissions can be configured for reads and writes, while HTTP/HTTPS and SOCKS5 traffic can pass through proxy-based filtering. Domain allowlists and denylists add destination-level rules, and Unix socket access controls provide another boundary for local communication. Sandbox violation monitoring and attribution help identify when restricted behavior occurs. These controls give teams several ways to shape process access rather than relying on a single isolation setting.
The trade-off is operational responsibility. Self-hosted deployment means teams manage the runtime and its environment themselves, while support is centered on documentation. The project is also described as a beta research preview, which makes it a better fit for teams comfortable evaluating an open-source runtime than for buyers seeking a mature, vendor-managed service. Choose it when cross-platform coverage, CLI and library interfaces, and detailed filesystem and network restrictions matter. Consider an alternative if managed deployment, broader support channels, or established product maturity are higher priorities.
Anthropic Sandbox Runtime pricing
Anthropic Sandbox Runtime fact sheet
| Free plan | Not verified |
|---|---|
| Paid from | None |
| Isolation method | Container |
| Concurrent environments | Not verified |
| Persistent storage | Not verified |
| Network controls | Yes |
| API or CLI access | Yes |
| Deployment | Self_hosted |
| Deployment | Self-hosted |
| Platforms | Windows, macOS, Linux |
| Support | Docs |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Pricing | Open source |
| Website | github.com |
| Facts checked | 21 Sep 2026 |
Alternatives to Anthropic Sandbox Runtime
- E2BProduction-grade isolation, flexible controls, and SDK access for AI code execution.9.8
- microsandboxFlexible sandbox infrastructure for teams running high-volume isolated workloads.9.0
- Docker SandboxesA focused sandbox for running coding agents with isolation, policies, and persistent state.8.3
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Anthropic Sandbox Runtime vs the competition
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Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026
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