langgraph/concepts/time-travel/

[giscus[bot]]

langgraph/concepts/time-travel/

Build language agents as graphs

https://langchain-ai.github.io/langgraph/concepts/time-travel/

[sivaTwks010928]

Let’s say I’m using interrupt from langgraph.types inside some nodes of a subgraph. I have two subgraphs, both of which contain nodes that use interrupt, and I’ve combined them into a parent graph (each subgraph is compiled into a node in the parent graph).

Now, suppose I want to "travel back in time" — meaning I want the user to be able to select a checkpoint to return to, and then resume execution from that point, potentially following a different path than the original one.

How can I implement this kind of behavior, especially considering that the subgraphs are already compiled into the parent graph?

[mbn18]

Tried to to use time travel from a point in a sub-graph, couldn't find a way.
Is that possible?