diff --git a/src/webapp/api-client/ApiClient.ts b/src/webapp/api-client/ApiClient.ts
index b530427e..a8b63d4c 100644
--- a/src/webapp/api-client/ApiClient.ts
+++ b/src/webapp/api-client/ApiClient.ts
@@ -57,6 +57,8 @@ import type {
   GetUrlCardsResponse,
   GetProfileResponse,
   GetProfileParams,
+  GetUrlStatusForMyLibraryParams,
+  GetUrlStatusForMyLibraryResponse,
 } from './types';
 
 // Main API Client class using composition
@@ -152,6 +154,13 @@ export class ApiClient {
     return this.queryClient.getUserCollections(params);
   }
 
+  async getUrlStatusForMyLibrary(
+    params: GetUrlStatusForMyLibraryParams,
+  ): Promise<GetUrlStatusForMyLibraryResponse> {
+    this.requireAuthentication('getUrlStatusForMyLibrary');
+    return this.queryClient.getUrlStatusForMyLibrary(params);
+  }
+
   // Card operations - delegate to CardClient (all require authentication)
   async addUrlToLibrary(
     request: AddUrlToLibraryRequest,
diff --git a/src/webapp/api-client/clients/QueryClient.ts b/src/webapp/api-client/clients/QueryClient.ts
index 5a21f258..26074da1 100644
--- a/src/webapp/api-client/clients/QueryClient.ts
+++ b/src/webapp/api-client/clients/QueryClient.ts
@@ -7,6 +7,7 @@ import {
   GetProfileResponse,
   GetCollectionPageResponse,
   GetCollectionsResponse,
+  GetUrlStatusForMyLibraryResponse,
   GetMyUrlCardsParams,
   GetUrlCardsParams,
   GetCollectionPageParams,
@@ -14,6 +15,7 @@ import {
   GetCollectionsParams,
   GetCollectionPageByAtUriParams,
   GetProfileParams,
+  GetUrlStatusForMyLibraryParams,
 } from '../types';
 
 export class QueryClient extends BaseClient {
@@ -157,4 +159,14 @@ export class QueryClient extends BaseClient {
 
     return this.request<GetCollectionsResponse>('GET', endpoint);
   }
+
+  async getUrlStatusForMyLibrary(
+    params: GetUrlStatusForMyLibraryParams,
+  ): Promise<GetUrlStatusForMyLibraryResponse> {
+    const searchParams = new URLSearchParams({ url: params.url });
+    return this.request<GetUrlStatusForMyLibraryResponse>(
+      'GET',
+      `/api/cards/library/status?${searchParams}`,
+    );
+  }
 }
diff --git a/src/webapp/api-client/types/requests.ts b/src/webapp/api-client/types/requests.ts
index 17821ec9..2c6b9789 100644
--- a/src/webapp/api-client/types/requests.ts
+++ b/src/webapp/api-client/types/requests.ts
@@ -127,3 +127,7 @@ export interface GenerateExtensionTokensRequest {
 export interface GetProfileParams {
   identifier: string; // Can be DID or handle
 }
+
+export interface GetUrlStatusForMyLibraryParams {
+  url: string;
+}
diff --git a/src/webapp/api-client/types/responses.ts b/src/webapp/api-client/types/responses.ts
index 1e76e84e..0b088d07 100644
--- a/src/webapp/api-client/types/responses.ts
+++ b/src/webapp/api-client/types/responses.ts
@@ -297,3 +297,13 @@ export interface GetGlobalFeedResponse {
     nextCursor?: string;
   };
 }
+
+export interface GetUrlStatusForMyLibraryResponse {
+  cardId?: string;
+  collections?: {
+    id: string;
+    uri?: string;
+    name: string;
+    description?: string;
+  }[];
+}