diff --git a/packages/app/control/src/services/db/apps/templateReferrals/types.ts b/packages/app/control/src/services/db/apps/templateReferrals/types.ts
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+/**
+ * Represents the essential information about a template used for app creation.
+ * This can be used to track the origin of an app when it's built from a template.
+ */
+export interface TemplateReference {
+  /**
+   * The unique identifier of the template from which an app was created.
+   * This links the app back to its template origin, which is crucial for
+   * associating the app with a template creator for referral purposes.
+   */
+  templateId: string;
+}
+
+/**
+ * Defines the data structure for capturing template referral information
+ * when an app is created from an external template. This allows `echo-start`
+ * to identify the template creator as a referrer for the new app.
+ */
+export interface AppTemplateReferralInfo {
+  /**
+   * The unique identifier of the template used to create the app.
+   * This field is mandatory as it identifies the specific template.
+   */
+  templateId: string;
+  /**
+   * The unique identifier of the user who created the `templateId`.
+   * This user will be automatically registered as a referrer for the new app
+   * in the external referral system (e.g., echo.merit.systems referral service).
+   * This field is mandatory to identify the referrer.
+   */
+  referrerUserId: string;
+  /**
+   * Optional: A timestamp indicating when the app was created using this template,
+   * or when the referral process was initiated/completed. This can be used for auditing.
+   */
+  referredAt?: Date;
+  /**
+   * Optional: The current status of the referral registration with the external referral system.
+   * Possible values could include 'pending' (referral initiated but not confirmed),
+   * 'registered' (referral successfully recorded), or 'failed' (referral attempt failed).
+   */
+  referralStatus?: 'pending' | 'registered' | 'failed';
+  /**
+   * Optional: Any additional metadata from the template or creation process
+   * that might be relevant to the referral or its tracking.
+   */
+  templateMetadata?: Record<string, any>;
+}
+
+/**
+ * An interface to extend standard app creation options when an app is specifically
+ * being created from a template and requires template creator referral tracking.
+ * `echo-start` would consume this type to include and process the referral information
+ * when creating a new application instance.
+ */
+export interface AppCreationWithTemplateReferralOptions {
+  // Assuming a base AppCreationOptions type exists elsewhere,
+  // this interface extends it with template and referral specific fields.
+  // The 'appId' field is assumed to be part of the app creation context
+  // or generated during the process, and is necessary to link the referral.
+  appId: string; 
+
+  /**
+   * Comprehensive information about the template used and the template creator
+   * who should be registered as a referrer. This field would be populated by
+   * `echo-start` when an external template is used for app instantiation.
+   */
+  templateReferral: AppTemplateReferralInfo;
+
+  // Other standard app creation fields (e.g., appName, ownerId, initial configuration)
+  // would typically be included in a base interface that this type implicitly extends or combines with.
+}