Node
A unit of work in a workflow graph.
Node names must be unique within a graph, since the scheduler keys on them.
Every member except name and description requires opting in to ExperimentalWorkflowApi, so implementing a node does too; those two need no opt-in because App, Runner and InvocationContext expose a node as stable API.
Inheritors
Properties
The node's retry policy and execution timeout.
What the node does, for humans and for a model that may call it.
Checks the input as JSON; the node receives the checked value unless it takes a Content. An edge fails to build when the predecessor's output schema admits values this one rejects; what that schema leaves open (no type, undeclared keys, undescribed ARRAY items) is checked at run time.
Validates the output value the node emits with the same rules, and the checked value is the output. A value set with Context.setOutput and a message-as-output event's content are not checked.
Whether the node runs only once every predecessor has completed, receiving all their outputs keyed by node name. A fan-in node overrides this to true.
On resume, whether to run the node again from scratch rather than completing it with the resuming answer as its output.
Declares the state keys the node uses. Child nodes inherit it unless they declare their own.
Whether the node stays re-triggerable until it produces an output or a route, instead of completing when its run completes.