self-hosted-sandboxes-security changedmanaged-agents/self-hosted-sandboxes-security
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33Anthropic secures the control plane across all environments: session and work queue integrity, multitenant isolation, and agent-context minimization. When you self-host sandboxes, the following responsibilities fall to you.
33In every environment, Anthropic secures the parts it runs: session and work queue integrity, multitenant isolation, and agent-context minimization. When you self-host sandboxes, the following responsibilities fall to you.
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3535## What you own
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4747## What Anthropic cannot do for you
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4949* **Know that your key leaked.** Anthropic can detect anomalous usage patterns, but cannot know your key was compromised. If you suspect `ANTHROPIC_ENVIRONMENT_KEY` leaked, revoke it and generate a replacement immediately. Revocation is validated on every request, so it takes effect on the worker’s next call.
50* **Verify your worker build.** Anthropic does not inspect your sandbox image or runtime. A supply-chain compromise in your image is not detectable from the control plane.
50* **Verify your worker build.** Anthropic does not inspect your sandbox image or runtime. A supply-chain compromise in your image is not detectable from Anthropic’s side.
5151* **Isolate tools inside your sandbox.** Anthropic’s security boundary stops at the sandbox. How you isolate individual tool executions from each other inside that boundary is entirely your responsibility.
5252* **Enforce data retention in your environment.** Once session content reaches your worker, it is outside Anthropic’s data lifecycle controls.
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