Remote built a Code Execution Agent using LangChain and LangGraph to automate customer data migrations during onboarding. The system separates LLM reasoning from code execution: models decide what transformations to perform, while Python code in a WebAssembly sandbox handles actual data processing. This hybrid approach bypasses
Table of contents
The Challenge: Context windows and hallucinationsThe Solution: Let the models reason, let code executeWhy LangChain and LangGraphResults and impactLessons learnedWhat’s nextFinal thoughtsSort: