Agent Graph Engineering — References

Reviewed 2026-10-13. The sources use related but non-identical scopes for graph engineering.

• 3 Years of Graph Engineering with LangGraph — Sydney Runkle and Harrison Chase, July 22, 2026. Execution graphs, deterministic/agentic steps, and the relationship between cycles and ordinary agent loops.
• Graph API overview — LangChain. Primary documentation for node, edge, state, reducer, and routing mechanisms.
• Persistence — LangChain. Runtime state persistence and continuation; verify behavior against the deployed version.
• Temporal Workflow — Temporal. History-based replay and the separation between workflow decisions and external activity execution.
• Graph Engineering in the Era of LLM Agents: From Individual Intelligence to System Intelligence — Feng and colleagues, August 2026. A research framing spanning task, agent, and state graphs. Its broad taxonomy is distinct from a particular runtime API.

The ticket workflow and trace invariants in this capability are illustrative design guidance. They are not a claim that any cited framework automatically enforces the application's policies.