AI BriefingLangSmith Sandboxes Reaches General Availability
Key point
LangChain has launched LangSmith Sandboxes, a hardware virtualization-based service for secure code execution by agents, to general availability.
Details
LangSmith Sandboxes has reached general availability (GA). This service provides a secure and scalable environment designed to safely run untrusted code generated by agents.
Each sandbox is powered by a hardware-virtualized microVM, isolated at the kernel level, providing complete protection from existing services or other sandboxes. This offers a level of security that is difficult to guarantee with general container technology alone.
Recently, agents such as Cursor and Claude Code require computer-like environments to perform tasks such as code generation, dependency installation, and test execution. However, existing container approaches share a kernel, making them highly vulnerable to kernel exploits like Copy Fail or supply chain attacks like the Shai-Hulud npm worm.
LangSmith Sandboxes provides the following powerful features for agent workflows:
- Snapshots and inexpensive copy-on-write forks
- Blueprints for pre-configured environments
- Service URLs, Sandbox CLI, Auth Proxy
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