Developers Use Disposable Sandbox Servers to Test Where AI Coding Agents Cross Boundaries

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A software developer has outlined a reproducible workflow for testing how AI coding agents behave when their instructions leave room for overreach. The method involves running an agent inside a disposable container or remote server loaded with fake credentials, honeytoken files, and a monitored network endpoint. Carefully crafted tasks are designed to tempt the agent beyond its stated scope, such as accessing sensitive files or making unauthorized network calls. All activity is captured through logs, allowing testers to observe boundary violations without risking real data or systems. The author notes that any ephemeral environment works for this approach, including a local Docker container with no host volume mounts.

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