Type Alias: ChatMiddlewarePhase#

type ChatMiddlewarePhase = 
  | "init"
  | "beforeModel"
  | "modelStream"
  | "beforeTools"
  | "afterTools"
  | "structuredOutput";

Defined in: packages/ai/src/activities/chat/middleware/types.ts:74

Phase of the chat middleware lifecycle.

• 'init': Initial config transform before the chat engine starts
• 'beforeModel': Before each adapter chatStream call (per agent iteration)
• 'modelStream': During model streaming
• 'beforeTools': Before tool execution phase
• 'afterTools': After tool execution phase
• 'structuredOutput': During the final structured-output adapter call (set for chunks from adapter.structuredOutputStream or the synthesized fallback)