Interface: GenerationMiddlewareContext<TContext>

Defined in: packages/ai/src/activities/middleware/types.ts:51

Stable context passed to every GenerationMiddleware hook. Created once per activity call and shared across the hooks of that call.

Carries only fields every activity can honor. ChatMiddlewareContext structurally includes all of these plus chat-only state (messages, iteration, capabilities, …), which is why a chat middleware that reads those extra fields is not assignable to GenerationMiddleware.

Type Parameters

TContext

TContext = unknown

Properties

activity

activity: GenerationActivity;

Defined in: packages/ai/src/activities/middleware/types.ts:58

Which activity this call is. Discriminates media from chat.

context

context: TContext;

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

Runtime context provided by the activity options, if any.

createId()

createId: (prefix) => string;

Defined in: packages/ai/src/activities/middleware/types.ts:72

Generate a unique id with the given prefix.

Parameters

prefix

string

Returns

string

model

model: string;

Defined in: packages/ai/src/activities/middleware/types.ts:62

Model id. Emitted as gen_ai.request.model.

modelOptions?

optional modelOptions: unknown;

Defined in: packages/ai/src/activities/middleware/types.ts:68

Provider-specific options passed to the activity, if any. Typed unknown because each activity's options are strongly typed per model; a supertype of ChatMiddlewareContext's modelOptions.