LangChain released Deep Agents Code integrated with NVIDIA’s NemoClaw blueprint to run coding agents securely against sensitive codebases. The system pairs the open Nemotron 3 Ultra model with Deep Agents Code inside an OpenShell sandbox that enforces deny-by-default networking, human approval on sensitive operations, and a full audit trail. A single command (nemo-deepagents onboard) deploys the stack, including for legacy modernization tasks such as COBOL migrations, while keeping source code, model choice, and operational logs under the organization’s control.