Simon Willison • 1/10/2026

Fly's new Sprites.dev addresses both developer sandboxes and API sandboxes at the same time

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Fly.io's new Sprites.dev product provides stateful, checkpointable sandbox environments designed to solve two key problems: securely running AI coding agents in 'YOLO' mode and providing an API for executing untrusted code. It offers persistent VMs with pre-installed tools, addressing the limitations of ephemeral containers for development and secure code execution.

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#Claude Code #Flyio #Developer Sandboxes
Fly's new Sprites.dev addresses both developer sandboxes and API sandboxes at the same time

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