Persistent cloud sandboxes for agents that run code and install tools
Sandbox0 provides isolated cloud computers for AI agents, with a durable writable filesystem that survives pauses and resumes. Developers can run code, install dependencies, manage files, and release compute between tasks while retaining the same environment.
Agenticness = how independently a tool can take action, scored across 9 dimensions. Scored independently by David Kooi, Skylark Creations — see full rubric → Last re-evaluated 23 October 2026.
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About
Sandbox0 is managed agent infrastructure for developers building AI agents that need an isolated computer rather than a stateless code-execution session. Each sandbox provides a cloud runtime where an agent can run shell commands, install software,...
Sandbox0 is infrastructure for an agent, not an AI agent or model itself. It is a strong fit when your application needs users' agents to retain installed packages and filesystem state across intermittent jobs, especially when continuously running...
Proposes and executes multi-step plans with your approval.
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- Free credit: $5 credit for new users; no credit card required.
- Cloud compute: $0.015 per GiB-hour (approximately $0.000004167 per GiB-second), billed by the second.
- Retained incremental storage: $0.02 per GiB-month. Shared base images are excluded from this charge.
When Sandbox0 changes its pricing, we catch it the next morning
We recrawl every tool in this directory daily. AI Insider is the 3-minute brief on what actually changed — pricing, features, score moves on our 36-point rubric — often before any press coverage. Sent daily. Skipped when nothing happened.