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Edges connect nodes in your workflow, defining the execution path from one step to another. Each edge has a source node, target node, and label.

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Edge labels

  • Default label: “next” - used by most nodes
  • Custom labels: Required for decide nodes to match condition labels
  • Unique labels: Each outgoing edge from a node must have a unique label

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Node-specific edges

For function-mode DecideNodes, the condition labels are automatically provided to your function in the available_edges array, ensuring your function knows which edges can be taken.

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Validation rules

  • Source and target node identifiers must exist in the workflow definition
  • Exactly one Start node must be present and have at least one outgoing edge
  • Node identifiers must be unique across the workflow
  • Workflow must include at least one node
  • Decide node edge labels must match condition labels exactly in both AI and function modes (otherwise execution cannot route)