Unverified50% confidenceFactExact time
In LangGraph's StateGraph, the parent graph and subgraph each maintain their own state schema, and only keys declared on both sides are passed across the boundary; keys produced by the parent step but not declared in the sub-schema silently disappear on the subgraph side, without throwing an exception or producing a warning log.
1
Sources
50%
Confidence
Long-term
Relevance
10/14/2026
First Seen
Sources
Related Entities
Related Claims
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