Compare code sandboxes
Cloudflare Sandbox SDK vs Cosmonic
Two code sandboxes tools for AI agents, side by side. Facts come from each tool's own site.
Cloudflare Sandbox SDK
developers.cloudflare.comRun untrusted or generated code in Linux VMs or isolated Workers on Cloudflare.
Visit Cloudflare Sandbox SDK
Cosmonic
cosmonic.comWebAssembly sandboxes for agent code, MCP servers and tools, with no access until you grant it: the free Cosmonic Desktop app (public beta) and Cosmonic Control for Kubernetes. Open source core: CNCF wasmCloud.
Visit Cosmonic| Cloudflare Sandbox SDK | Cosmonic | |
|---|---|---|
| What it does | Run untrusted or generated code in Linux VMs or isolated Workers on Cloudflare. | WebAssembly sandboxes for agent code, MCP servers and tools, with no access until you grant it: the free Cosmonic Desktop app (public beta) and Cosmonic Control for Kubernetes. Open source core: CNCF wasmCloud. |
| In their words | Overview ยท Cloudflare Sandboxes docs | Cosmonic: Sandbox AI agents and tools |
| Open source | No | No |
| Website | developers.cloudflare.com | cosmonic.com |
| Link checked | 2026-10-20 | 2026-10-20 |
More options:Alternatives to Cloudflare Sandbox SDKAlternatives to CosmonicGuide: Best code sandboxes for AI agents
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