Cloud agent sandbox with persistent filesystem and on-demand compute
On-demand cloud macOS for AI agents, billed per minute
Stage
MVP
Startup
Founded
Not given
2026
Based in
US
Not given
Pricing model
Paid
Paid
Pricing
Compute: $0.015 per GiB-hour (approximately $0.000004167 per GiB-second, billed by the second). Storage: $0.02 per GiB-month for retained incremental RootFS data and memory checkpoints. Network ingress and egress currently free. Object-store GET and PUT requests free. New users receive $5 free credi
$0.90 per hour, billed per minute. Prepaid credit starts at $10, never expires and needs no subscription. Bigger top-ups add up to 20% bonus credit: $100 buys 133 hours. 7-day money-back guarantee on first purchase.
Key features
Automatic filesystem growth as storage fills
Pause compute without losing work or paying compute charges
Resume to same environment on demand
Access files while paused without waking compute
Public HTTP services with auto-resume capability
Command-line interface (s0 CLI) for agent-native workflows
Incremental checkpoints to avoid full filesystem copies
Scoped API keys and team-based access controls
On-demand file reads without downloading entire filesystem
Real macOS on Apple M6 or M5 Pro silicon, ready in about a minute
Full admin access with no password prompts
Xcode 27 preinstalled with Homebrew, Node, Python and CocoaPods
iOS Simulator with screenshots and screen recordings
Persistent 20 GB encrypted drive between sessions
Control via MCP, CLI, API or SSH
App Store submissions and TestFlight uploads
Secrets management without chat exposure
Desktop view and control in browser
What makes it different
Persistent filesystem across pause/resume without duplicating data
Pay only for compute time used; paused sandboxes have zero compute charges
Automatic filesystem growth so agents can install and persist unlimited tools
Same API for both human users and AI agents
Agents work autonomously without human prompts or permission dialogs
Pay only for minutes used, not idle Mac time
Complete end-to-end app building and publishing from iOS Simulator to App Store
Built-in isolation and security with ephemeral sessions
NoMac