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A multi-turn agent that spins up a fresh sandbox every turn loses its filesystem, its installed packages, and its running processes each time. Here's the exact pause/resume code — and the auto-pause config that stops you paying for idle boxes between turns.
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E2B's Build System 2.0 kills the e2b.Dockerfile and the `e2b template build` CLI step — you define the sandbox environment in Python or TypeScript, and the build runs itself. Here's the exact code, and the one capability it unlocks that a Dockerfile never could.
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A copy-pasteable walkthrough for founders shipping a coding or data-analysis agent — execute model-generated Python in an isolated E2B microVM, capture stdout/stderr, enforce timeouts, and kill runaway processes without touching your own server.
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