E2B

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E2B is open-source cloud infrastructure that gives AI agents secure computers to work in. Its core idea addresses a basic problem with agentic systems: an agent that writes and runs code needs somewhere to execute it, but running untrusted, AI-generated code on your own machines or servers is dangerous. E2B provides isolated, disposable cloud sandboxes where an agent can run code, browse the web, and operate a desktop without ever touching your own infrastructure. Each sandbox is a fast Linux virtual machine that spins up on demand in milliseconds and can persist its filesystem and state across a multi-step task, so an agent can install packages, write and edit files, run commands, and pick up where it left off. E2B builds these on Firecracker microVMs, the same lightweight virtualization used for serverless computing, which gives a stronger isolation boundary than ordinary containers, an important property when the code being executed was generated by a model and cannot be trusted. The platform is deliberately model- and framework-agnostic, working with any major LLM and any language. Developers drive it through Python and TypeScript SDKs and a CLI, with a code-interpreter SDK for running model-generated code and capturing its output, and an E2B Desktop variant that gives an agent a full graphical Linux desktop to see and control for computer-use tasks. Because everything is open source, including the underlying infrastructure, teams can also self-host. A defining strength is concurrency and scale: E2B is built to launch large numbers of sandboxes in parallel, which makes it a common substrate not just for coding agents but for running many agent instances at once, evaluating reinforcement-learning reward functions across many environments, and powering data analysis and research workflows. It is used as the execution layer behind well-known AI products and autonomous agents, and offered as a hosted service as well as bring-your-own-cloud and on-premises deployments for enterprises with security or data-residency requirements. In short, E2B is the secure runtime that lets agents act on the world through code, without putting the host environment at risk.