The SDK now includes a model-native harness and native sandbox execution. It also adds configurable memory, Codex-like filesystem tools, and standardized integrations such as MCP and AGENTS.md.
This lowers the friction of building production-grade agent systems. It also helps teams move from prototype frameworks to more controlled, model-aware execution patterns.
Developers building file-aware or command-aware agents should review the new harness first. If you need safety and repeatable tool use, this is the SDK update to test.
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