Nested Graph Composition And Subgraph Execution

Build resilient language agents as graphs.

Unique: Enables true hierarchical agent composition where subgraphs execute as isolated units with explicit state marshaling, rather than flattening all nodes into a single graph. This architectural pattern allows developers to build reusable agent components with clear boundaries and independent execution semantics.

vs others: Provides cleaner modularity than flat graph architectures by isolating subgraph state and execution, and enables component reuse that imperative orchestration frameworks cannot match without custom abstraction layers.