# Sandboxing

- [OpenAI's Agents SDK Gets Sandboxed Execution and a Model-Native Harness: The Agent Infrastructure Layer Is Now Table Stakes](https://sdd.sh/2026/04/openais-agents-sdk-gets-sandboxed-execution-and-a-model-native-harness-the-agent-infrastructure-layer-is-now-table-stakes.md): OpenAI's April 15 Agents SDK update ships sandboxed execution, a model-native harness with configurable memory, provider-agnostic model support, and durable state via snapshotting. The primitives Claude Code has offered since day one are becoming the standard SDK layer. Here's what that means.