diff --git a/libs/common/src/abstractions/api.service.ts b/libs/common/src/abstractions/api.service.ts
index a8e2f45283..d130f51413 100644
--- a/libs/common/src/abstractions/api.service.ts
+++ b/libs/common/src/abstractions/api.service.ts
@@ -163,6 +163,11 @@ import { TwoFactorYubiKeyResponse } from "../models/response/two-factor-yubi-key
 import { UserKeyResponse } from "../models/response/user-key.response";
 import { SendAccessView } from "../models/view/send-access.view";
 
+/**
+ * @deprecated The `ApiService` class is deprecated and calls should be extracted into individual
+ * api services. The `send` method is still allowed to be used within api services. For background
+ * of this decision please read https://contributing.bitwarden.com/architecture/adr/refactor-api-service.
+ */
 export abstract class ApiService {
   send: (
     method: "GET" | "POST" | "PUT" | "DELETE",
diff --git a/libs/common/src/services/api.service.ts b/libs/common/src/services/api.service.ts
index 6b660bb367..d1bf0325b5 100644
--- a/libs/common/src/services/api.service.ts
+++ b/libs/common/src/services/api.service.ts
@@ -172,6 +172,11 @@ import { TwoFactorYubiKeyResponse } from "../models/response/two-factor-yubi-key
 import { UserKeyResponse } from "../models/response/user-key.response";
 import { SendAccessView } from "../models/view/send-access.view";
 
+/**
+ * @deprecated The `ApiService` class is deprecated and calls should be extracted into individual
+ * api services. The `send` method is still allowed to be used within api services. For background
+ * of this decision please read https://contributing.bitwarden.com/architecture/adr/refactor-api-service.
+ */
 export class ApiService implements ApiServiceAbstraction {
   private device: DeviceType;
   private deviceType: string;