diff --git a/src/webapp/api-client/ApiClient.ts b/src/webapp/api-client/ApiClient.ts
index a8b63d4c..fced1ff1 100644
--- a/src/webapp/api-client/ApiClient.ts
+++ b/src/webapp/api-client/ApiClient.ts
@@ -59,6 +59,12 @@ import type {
   GetProfileParams,
   GetUrlStatusForMyLibraryParams,
   GetUrlStatusForMyLibraryResponse,
+  GetLibrariesForUrlParams,
+  GetLibrariesForUrlResponse,
+  GetNoteCardsForUrlParams,
+  GetNoteCardsForUrlResponse,
+  GetCollectionsForUrlParams,
+  GetCollectionsForUrlResponse,
 } from './types';
 
 // Main API Client class using composition
@@ -161,6 +167,24 @@ export class ApiClient {
     return this.queryClient.getUrlStatusForMyLibrary(params);
   }
 
+  async getLibrariesForUrl(
+    params: GetLibrariesForUrlParams,
+  ): Promise<GetLibrariesForUrlResponse> {
+    return this.queryClient.getLibrariesForUrl(params);
+  }
+
+  async getNoteCardsForUrl(
+    params: GetNoteCardsForUrlParams,
+  ): Promise<GetNoteCardsForUrlResponse> {
+    return this.queryClient.getNoteCardsForUrl(params);
+  }
+
+  async getCollectionsForUrl(
+    params: GetCollectionsForUrlParams,
+  ): Promise<GetCollectionsForUrlResponse> {
+    return this.queryClient.getCollectionsForUrl(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 26074da1..b0cb6e80 100644
--- a/src/webapp/api-client/clients/QueryClient.ts
+++ b/src/webapp/api-client/clients/QueryClient.ts
@@ -16,6 +16,12 @@ import {
   GetCollectionPageByAtUriParams,
   GetProfileParams,
   GetUrlStatusForMyLibraryParams,
+  GetLibrariesForUrlParams,
+  GetLibrariesForUrlResponse,
+  GetNoteCardsForUrlParams,
+  GetNoteCardsForUrlResponse,
+  GetCollectionsForUrlParams,
+  GetCollectionsForUrlResponse,
 } from '../types';
 
 export class QueryClient extends BaseClient {
@@ -169,4 +175,49 @@ export class QueryClient extends BaseClient {
       `/api/cards/library/status?${searchParams}`,
     );
   }
+
+  async getLibrariesForUrl(
+    params: GetLibrariesForUrlParams,
+  ): Promise<GetLibrariesForUrlResponse> {
+    const searchParams = new URLSearchParams({ url: params.url });
+    if (params.page) searchParams.set('page', params.page.toString());
+    if (params.limit) searchParams.set('limit', params.limit.toString());
+    if (params.sortBy) searchParams.set('sortBy', params.sortBy);
+    if (params.sortOrder) searchParams.set('sortOrder', params.sortOrder);
+
+    return this.request<GetLibrariesForUrlResponse>(
+      'GET',
+      `/api/cards/libraries/url?${searchParams}`,
+    );
+  }
+
+  async getNoteCardsForUrl(
+    params: GetNoteCardsForUrlParams,
+  ): Promise<GetNoteCardsForUrlResponse> {
+    const searchParams = new URLSearchParams({ url: params.url });
+    if (params.page) searchParams.set('page', params.page.toString());
+    if (params.limit) searchParams.set('limit', params.limit.toString());
+    if (params.sortBy) searchParams.set('sortBy', params.sortBy);
+    if (params.sortOrder) searchParams.set('sortOrder', params.sortOrder);
+
+    return this.request<GetNoteCardsForUrlResponse>(
+      'GET',
+      `/api/cards/notes/url?${searchParams}`,
+    );
+  }
+
+  async getCollectionsForUrl(
+    params: GetCollectionsForUrlParams,
+  ): Promise<GetCollectionsForUrlResponse> {
+    const searchParams = new URLSearchParams({ url: params.url });
+    if (params.page) searchParams.set('page', params.page.toString());
+    if (params.limit) searchParams.set('limit', params.limit.toString());
+    if (params.sortBy) searchParams.set('sortBy', params.sortBy);
+    if (params.sortOrder) searchParams.set('sortOrder', params.sortOrder);
+
+    return this.request<GetCollectionsForUrlResponse>(
+      'GET',
+      `/api/collections/url?${searchParams}`,
+    );
+  }
 }
diff --git a/src/webapp/api-client/types/requests.ts b/src/webapp/api-client/types/requests.ts
index 2c6b9789..ca0656b7 100644
--- a/src/webapp/api-client/types/requests.ts
+++ b/src/webapp/api-client/types/requests.ts
@@ -131,3 +131,27 @@ export interface GetProfileParams {
 export interface GetUrlStatusForMyLibraryParams {
   url: string;
 }
+
+export interface GetLibrariesForUrlParams {
+  url: string;
+  page?: number;
+  limit?: number;
+  sortBy?: string;
+  sortOrder?: 'asc' | 'desc';
+}
+
+export interface GetNoteCardsForUrlParams {
+  url: string;
+  page?: number;
+  limit?: number;
+  sortBy?: string;
+  sortOrder?: 'asc' | 'desc';
+}
+
+export interface GetCollectionsForUrlParams {
+  url: string;
+  page?: number;
+  limit?: number;
+  sortBy?: string;
+  sortOrder?: 'asc' | 'desc';
+}
diff --git a/src/webapp/api-client/types/responses.ts b/src/webapp/api-client/types/responses.ts
index 0b088d07..6a88ae95 100644
--- a/src/webapp/api-client/types/responses.ts
+++ b/src/webapp/api-client/types/responses.ts
@@ -307,3 +307,41 @@ export interface GetUrlStatusForMyLibraryResponse {
     description?: string;
   }[];
 }
+
+export interface GetLibrariesForUrlResponse {
+  libraries: {
+    userId: string;
+    name: string;
+    handle: string;
+    avatarUrl?: string;
+  }[];
+  pagination: Pagination;
+  sorting: Sorting;
+}
+
+export interface GetNoteCardsForUrlResponse {
+  notes: {
+    id: string;
+    note: string;
+    authorId: string;
+    createdAt: string;
+    updatedAt: string;
+  }[];
+  pagination: Pagination;
+  sorting: Sorting;
+}
+
+export interface GetCollectionsForUrlResponse {
+  collections: {
+    id: string;
+    uri?: string;
+    name: string;
+    description?: string;
+    authorId: string;
+  }[];
+  pagination: Pagination;
+  sorting: {
+    sortBy: 'name' | 'createdAt' | 'updatedAt' | 'cardCount';
+    sortOrder: 'asc' | 'desc';
+  };
+}