Type Alias InferAgentState<T>

InferAgentState: InferSchemaInput<InferAgentType<T, "State">> & InferMiddlewareStates<
InferAgentType<T, "Middleware">,
>

Helper type to infer the full merged state from an agent, including:

The agent's own state schema (if provided via stateSchema)
All middleware states

This matches the state type returned by invoke and used throughout the agent.

Type Parameters

T

Example

const middleware = createMiddleware({
  name: "counter",
  stateSchema: z.object({ count: z.number() }),
});

const agent = createAgent({
  model: "gpt-4",
  tools: [],
  stateSchema: z.object({ userId: z.string() }),
  middleware: [middleware],
});

type State = InferAgentState<typeof agent>;
// { userId: string; count: number }