export interface ActivitySuccess {
    'result'?: (Buffer | Uint8Array | string);
    /**
     * Optional structured observability metadata (step.llm: model, token
     * counts, cost estimate, finish reason), JSON-serialized by the SDK.
     * Copied verbatim into the COMPLETED checkpoint's StepCheckpoint.meta.
     */
    'meta'?: (Buffer | Uint8Array | string);
}
export interface ActivitySuccess__Output {
    'result': (Buffer);
    /**
     * Optional structured observability metadata (step.llm: model, token
     * counts, cost estimate, finish reason), JSON-serialized by the SDK.
     * Copied verbatim into the COMPLETED checkpoint's StepCheckpoint.meta.
     */
    'meta': (Buffer);
}