Conditional Node Execution in LangGraph

[octadion]

hi! if it’s possible to conditionally skip nodes. For example, if the state X is False, I want to skip node B and go directly from node A to node C. Is this kind of behavior supported in LangGraph?

Thanks!

[vbarda]

hi @octadion! yes, the recommended way would be to use Command API in LangGraph where you can combine dynamic control flow and state updates, and route directly from your node to a different node:

def node_a(state):
     ...
     goto = "node_b" if state["X"] else "node_c"
     ...
     return Command(goto=goto, update={...})

check out the concept docs here https://langchain-ai.github.io/langgraph/concepts/low_level/#command and how-to guide here https://langchain-ai.github.io/langgraph/how-tos/command/