LangChain/LangGraph use cases

1 real, sourced examples of what people do with LangChain/LangGraph, ranked by community upvotes.

Top 10 by upvotes

Have a LangChain agent draw pictures in the ROS 2 turtlesim 30 HN points

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Have a LangChain agent draw pictures in the ROS 2 turtlesim

A robotics grad student built a LangChain agent that controls ROS 2's turtlesim simulator to draw pictures from text instructions.

30 HN points · Hacker News · 2025-05-31