Firecracker microVM sandboxes that run untrusted code and AI agents securely, billed by the second.
What it does
Hopx (by Bunnyshell) provides isolated microVM sandboxes for running untrusted or AI-generated code, agents and jobs. Sandboxes start in roughly 100ms, support multiple languages, filesystem and shell access, and can run indefinitely. Billing is pay-per-use by the second with scale-to-zero.
Core features
Instant Firecracker microVM sandboxes (~100ms start)
Multi-language execution (Python, JS, Bash, Go)
Filesystem, shell and process management
Desktop automation and preview URLs
Native MCP integration for AI agents
No execution time limits with state persistence
Best for
→Running untrusted or user-submitted code safely
→Executing and validating AI-generated code
→Hosting long-running agents and background workers
→Isolated CI/CD testing and data processing
Pricing
Free
Compute
$0.000014
Toolspool rankingby monthly traffic