Node Overview

Underlying models:

• Workflow definition: Workflow.java
• Node interface: Node.java
• Edge definition: Edge.java

Workflow top-level structure

Fields in workflow JSON:

• id: workflow ID
• apiKey: key for external execution (for example chat, suggestion, order_approval_v1)
• name / description: name and description
• version: version number
• nodes: node array, each element is a Node of a specific type
• edges: edge array
• metadata: custom metadata

Key fields of Edge:

• sourceNodeID / targetNodeID: source/target node IDs
• sourcePortID / targetPortID: port IDs (for conditions/multiple branches)
• weight / condition / label: optional, for priority and display

Node types

• Start: see Start
• End: see End
• HTTP: see HTTP
• Condition: see Condition
• Code: see Code
• LLM: see LLM
• Loop: see Loop
• Approval: see Approval
• Metadata nodes: see Metadata nodes