Fly – A global load balancer with middleware

In plain words

Fly provides isolated Linux computers designed for AI agents, evaluations, and tools that need more than sandboxed environments. Each agent gets its own hardware-isolated Linux box that checkpoints its state, allowing tools like Claude and Codex to resume work exactly where they left it. The service bills only when resources are actively used, making it suitable for agents that need access to sensitive data like inboxes and calendars without running on local machines.

written from the facts on this page · September 2026

From the sources

Sandboxes aren't enough. Give your agent a real computer and get back to building. Fly.io is where agents run and where the things they create go live. Let agents prototype, iterate, and scale on the same primitives, from first sandbox to production. Real hardware-isolated Linux computers for agents, evals, and tools. The bill goes to zero when nobody's home. Every agent gets its own Linux box. A Sprite checkpoints itself while the agent works, so harnesses like Claude and Codex find everything where they left it. Hermes, Pi, Openclaw… whatever your flavour, an agent with access to your inbox and calendar shouldn't live on your laptop. Give it a Sprite that sleeps until it's needed and…from fly.io

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