



Open-source virtualization technology from AWS that powers secure sandboxes for AI agents with hardware-level isolation. Used by E2B and other sandbox platforms.
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Firecracker is an open-source virtualization technology from AWS that creates lightweight microVMs for secure, multi-tenant container and function-based services.
E2B and other AI agent sandbox platforms use Firecracker to provide secure isolation for running untrusted AI-generated code. Each sandbox is powered by Firecracker, a microVM made to run untrusted workflows.
Firecracker provides KVM-based virtualization with a minimalist device model, optimized for serverless and container workloads. It's written in Rust for memory safety and uses a minimal attack surface.
Firecracker powers AWS Lambda and AWS Fargate, processing trillions of requests per month. In 2026, it's also widely adopted by AI agent platforms requiring secure code execution.
Open-source under Apache 2.0 license.