Back to Vault
Coding Agents
Tier 4
LangGraph
Summary
LangChain's low-level orchestration framework modeling agents as stateful graphs: nodes, edges, checkpoints, and human-in-the-loop interrupts - the infrastructure layer many production agents standardize on.
Key Takeaways
- Graphs with checkpoints make agent state durable and resumable
- Interrupts formalize human approval points in the loop
Reliability Note
Official repository of an actively maintained project.
Flows informed by this source
2Agent Architecture
Error Recovery and Retry Policy for the Agent Loop
Design the retry, backoff, and give-up behavior that separates production agents from demos that loop forever.
01Build the error taxonomy
02Implement retries and corrective feedback
03Add the loop breaker
+1 more steps to Done
Best forbuilders who have shipped a basic app before
4 steps60-90 minutesIntermediate
Agent Architecture
Single-Agent vs Multi-Agent: Decide and Design
A decision flow for the most expensive architecture choice in agent systems - grounded in what actually ships versus what demos well.
01Analyze the workload for separability
02Score the three architectures
03Sketch the chosen architecture
+1 more steps to Done
Best forbuilders who have shipped a basic app before
4 steps45-75 minutesIntermediate