diff --git a/frontend-web/src/api/client.js b/frontend-web/src/api/client.js
new file mode 100644
index 00000000..e63a00f7
--- /dev/null
+++ b/frontend-web/src/api/client.js
@@ -0,0 +1,22 @@
+import axios from "axios";
+import { auth } from "../firebase";
+
+const apiClient = axios.create({
+  baseURL: import.meta.env.VITE_API_BASE_URL, // You will need to add this to your .env file
+});
+
+apiClient.interceptors.request.use(
+  async (config) => {
+    const user = auth.currentUser;
+    if (user) {
+      const token = await user.getIdToken();
+      config.headers.Authorization = `Bearer ${token}`;
+    }
+    return config;
+  },
+  (error) => {
+    return Promise.reject(error);
+  }
+);
+
+export default apiClient;
\ No newline at end of file
diff --git a/frontend-web/src/api/krowSDK.js b/frontend-web/src/api/krowSDK.js
new file mode 100644
index 00000000..45d6c64f
--- /dev/null
+++ b/frontend-web/src/api/krowSDK.js
@@ -0,0 +1,466 @@
+import apiClient from './client';
+import { auth, dataConnect } from '../firebase';
+import { signOut } from 'firebase/auth';
+
+import * as dcSdk from '@dataconnect/generated'; // listEvents, createEvent, etc.
+
+// --- Auth Module ---
+const authModule = {
+  /**
+   * Fetches the currently authenticated user's profile from the backend.
+   * @returns {Promise<object>} The user profile.
+   */
+  me: async () => {
+    const { data } = await apiClient.get('/auth/me');
+    return data;
+  },
+
+  /**
+   * Logs the user out.
+   * @param {string} [redirectUrl] - Optional URL to redirect to after logout.
+   */
+  logout: async (redirectUrl) => {
+    await signOut(auth);
+    if (redirectUrl) {
+      window.location.href = redirectUrl;
+    }
+  },
+
+  /**
+   * Checks if a user is currently authenticated.
+   * @returns {boolean} True if a user is authenticated.
+   */
+  isAuthenticated: () => {
+    return !!auth.currentUser;
+  },
+};
+
+// --- Core Integrations Module ---
+const coreIntegrationsModule = {
+  /**
+   * Sends an email.
+   * @param {object} params - { to, subject, body }
+   * @returns {Promise<object>} API response.
+   */
+  SendEmail: async (params) => {
+    const { data } = await apiClient.post('/sendEmail', params);
+    return data;
+  },
+
+  /**
+   * Invokes a large language model.
+   * @param {object} params - { prompt, response_json_schema, file_urls }
+   * @returns {Promise<object>} API response.
+   */
+  InvokeLLM: async (params) => {
+    const { data } = await apiClient.post('/invokeLLM', params);
+    return data;
+  },
+
+  /**
+   * Uploads a public file.
+   * @param {File} file - The file to upload.
+   * @returns {Promise<object>} API response with file_url.
+   */
+  UploadFile: async ({ file }) => {
+    const formData = new FormData();
+    formData.append('file', file);
+    const { data } = await apiClient.post('/uploadFile', formData, {
+      headers: { 'Content-Type': 'multipart/form-data' },
+    });
+    return data;
+  },
+
+  /**
+   * Uploads a private file.
+   * @param {File} file - The file to upload.
+   * @returns {Promise<object>} API response with file_uri.
+   */
+  UploadPrivateFile: async ({ file }) => {
+    const formData = new FormData();
+    formData.append('file', file);
+    const { data } = await apiClient.post('/uploadPrivateFile', formData, {
+      headers: { 'Content-Type': 'multipart/form-data' },
+    });
+    return data;
+  },
+
+  /**
+   * Creates a temporary signed URL for a private file.
+   * @param {object} params - { file_uri, expires_in }
+   * @returns {Promise<object>} API response with signed_url.
+   */
+  CreateFileSignedUrl: async (params) => {
+    const { data } = await apiClient.post('/createSignedUrl', params);
+    return data;
+  },
+};
+
+const dataconnectEntityConfig = {
+  User: {
+    list: 'listUsers',
+    get: 'getUserById',
+    create: 'createUser',
+    update: 'updateUser',
+    delete: 'deleteUser',
+    filter: 'filterUsers',
+  },
+  Event: {
+    list: 'listEvents',
+    create: 'createEvent',
+    get: 'getEventById',
+    update: 'updateEvent',
+    delete: 'deleteEvent',
+    filter: 'filterEvents',
+  },
+
+  Staff: {
+    list: 'listStaff',
+    create: 'createStaff',
+    get: 'getStaffById',
+    update: 'updateStaff',
+    delete: 'deleteStaff',
+    filter: 'filterStaff',
+  },
+
+  Vendor: {
+    list: 'listVendor',
+    get: 'getVendorById',
+    create: 'createVendor',
+    update: 'updateVendor',
+    delete: 'deleteVendor',
+    filter: 'filterVendors',
+  },
+
+  VendorRate: {
+    list: 'listVendorRate',
+    get: 'getVendorRateById',
+    create: 'createVendorRate',
+    update: 'updateVendorRate',
+    delete: 'deleteVendorRate',
+    filter: 'filterVendorRates',
+  },
+  
+  VendorDefaultSetting:{
+    list: 'listVendorDefaultSettings',
+    get: 'getVendorDefaultSettingById',
+    create: 'createVendorDefaultSetting',
+    update: 'updateVendorDefaultSetting',
+    delete: 'deleteVendorDefaultSetting',
+    filter: 'filterVendorDefaultSettings',
+  },
+
+  Invoice:{
+    list: 'listInvoice',
+    get: 'getInvoiceById',
+    create: 'createInvoice',
+    update: 'updateInvoice',
+    delete: 'deleteInvoice',
+    filter: 'filterInvoices',
+
+  },
+  
+  Business:{
+    list: 'listBusiness',
+    get: 'getBusinessById',
+    create: 'createBusiness',
+    update: 'updateBusiness',
+    delete: 'deleteBusiness',
+    filter: 'filterBusiness',
+  },
+
+  Certification:{
+    list: 'listCertification',
+    get: 'getCertificationById',
+    create: 'createCertification',
+    update: 'updateCertification',
+    delete: 'deleteCertification',
+    filter: 'filterCertification',
+  },
+  
+  Team:{
+    list: 'listTeam',
+    get: 'getTeamById',
+    create: 'createTeam',
+    update: 'updateTeam',
+    delete: 'deleteTeam',
+    filter: 'filterTeam',
+  },
+
+  TeamMember: {
+    list: 'listTeamMember',
+    get: 'getTeamMemberById',
+    create: 'createTeamMember',
+    update: 'updateTeamMember',
+    delete: 'deleteTeamMember',
+    filter: 'filterTeamMember',
+  },
+
+  TeamHub: {
+    list: 'listTeamHub',
+    get: 'getTeamHubById',
+    create: 'createTeamHub',
+    update: 'updateTeamHub',
+    delete: 'deleteTeamHub',
+    filter: 'filterTeamHub',
+  },
+
+  TeamMemberInvite: {
+    list: 'listTeamMemberInvite',
+    get: 'getTeamMemberInviteById',
+    create: 'createTeamMemberInvite',
+    update: 'updateTeamMemberInvite',
+    delete: 'deleteTeamMemberInvite',
+    filter: 'filterTeamMemberInvite',
+  },
+  
+  Conversation:{
+    list: 'listConversation',
+    get: 'getConversationById',
+    create: 'createConversation',
+    update: 'updateConversation',
+    delete: 'deleteConversation',
+    filter: 'filterConversation',
+  }, 
+  
+  Message:{
+    list: 'listMessage',
+    get: 'getMessageById',
+    create: 'createMessage',
+    update: 'updateMessage',
+    delete: 'deleteMessage',
+    filter: 'filterMessage',
+  }, 
+  
+  ActivityLog:{
+    list: 'listActivityLog',
+    get: 'getActivityLogById',
+    create: 'createActivityLog',
+    update: 'updateActivityLog',
+    delete: 'deleteActivityLog',
+    filter: 'filterActivityLog',
+  },
+
+  Enterprise:{
+    list: 'listEnterprise',
+    get: 'getEnterpriseById',
+    create: 'createEnterprise',
+    update: 'updateEnterprise',
+    delete: 'deleteEnterprise',
+    filter: 'filterEnterprise',
+  }, 
+  
+  Sector:{
+
+  },
+  
+  Partner:{
+
+  }, 
+  
+  Order:{
+
+  }, 
+  
+  Shift:{
+
+  }
+  
+};
+
+// Helper for methods not implemented 
+const notImplemented = (entityName, method) => async () => {
+  throw new Error(`${entityName}.${method} is not implemented yet for Data Connect`);
+};
+
+// --- Entities Module ( Data Connect, without REST Base44) ---
+const entitiesModule = {};
+
+Object.entries(dataconnectEntityConfig).forEach(([entityName, ops]) => {
+  entitiesModule[entityName] = {
+    
+    get: notImplemented(entityName, 'get'),
+    update: notImplemented(entityName, 'update'),
+    delete: notImplemented(entityName, 'delete'),
+    filter: notImplemented(entityName, 'filter'),
+    list: notImplemented(entityName, 'list'),
+    create: notImplemented(entityName, 'create'),
+
+    // list
+    ...(ops.list && {
+      list: async (params) => {
+        const fn = dcSdk[ops.list];
+        if (typeof fn !== 'function') {
+          throw new Error(
+            `Data Connect operation "${ops.list}" not found for entity "${entityName}".`
+          );
+        }
+        
+        return fn(dataConnect);
+      },
+    }),
+
+    // create
+    ...(ops.create && {
+      create: async (params) => {
+        const fn = dcSdk[ops.create];
+        if (typeof fn !== 'function') {
+          throw new Error(
+            `Data Connect operation "${ops.create}" not found for entity "${entityName}".`
+          );
+        }
+
+        const { data } = params ?? {};
+        if (!data) {
+          throw new Error(
+            `${entityName}.create expects a payload like { data: { ...fields } }`
+          );
+        }
+
+        return fn(dataConnect, data);
+      },
+    }),
+
+    //get
+    ...(ops.get && {
+      get: async (params) => {
+        const fn = dcSdk[ops.get];
+        if (typeof fn !== 'function') {
+          throw new Error(
+            `Data Connect operation "${ops.get}" not found for entity "${entityName}".`
+          );
+        }
+
+        if (!params || typeof params !== 'object') {
+          throw new Error(`${entityName}.get expects an object of variables (e.g. { id })`);
+        }
+
+        return fn(dataConnect, params);
+      },
+    }),
+    
+    //update
+    ...(ops.update && {
+      update: async (params) => {
+        const fn = dcSdk[ops.update];
+        if (typeof fn !== 'function') {
+          throw new Error(
+            `Data Connect operation "${ops.update}" not found for entity "${entityName}".`
+          );
+        }
+
+        if (!params || typeof params !== 'object') {
+          throw new Error(
+            `${entityName}.update expects an object of variables matching the GraphQL mutation`
+          );
+        }
+
+        const { id, data } = params;
+
+        if (!id) {
+          throw new Error(`${entityName}.update requires an "id" field`);
+        }
+
+        if (!data || typeof data !== 'object') {
+          throw new Error(
+            `${entityName}.update requires a "data" object with the fields to update`
+          );
+        }
+        
+        const vars = { id, ...data };
+
+        return fn(dataConnect, vars);
+
+      },
+    }),
+    
+    
+    // delete
+    ...(ops.delete && {
+      delete: async (params) => {
+        const fn = dcSdk[ops.delete];
+        if (typeof fn !== 'function') {
+          throw new Error(
+            `Data Connect operation "${ops.delete}" not found for entity "${entityName}".`
+          );
+        }
+
+        if (!params || typeof params !== 'object') {
+          throw new Error(
+            `${entityName}.delete expects an object like { id }`
+          );
+        }
+
+        const { id } = params;
+
+        if (!id) {
+          throw new Error(`${entityName}.delete requires an "id" field`);
+        }
+
+        // Data Connect solo espera { id } como variables
+        return fn(dataConnect, { id });
+      },
+    }),
+
+
+    // filter
+    ...(ops.filter && {
+      filter: async (params) => {
+        const fn = dcSdk[ops.filter];
+        if (typeof fn !== 'function') {
+          throw new Error(
+            `Data Connect operation "${ops.filter}" not found for entity "${entityName}".`
+          );
+        }
+
+        if (!params) {
+          if (ops.list) {//if no params, call to list()
+            const listFn = dcSdk[ops.list];
+            if (typeof listFn !== 'function') {
+              throw new Error(
+                `Data Connect operation "${ops.list}" not found for entity "${entityName}".`
+              );
+            }
+            return listFn(dataConnect);
+          }
+          throw new Error(`${entityName}.filter expects params or a list operation`);
+        }
+        const rawFilters = params.filters ?? params;
+        const variables = {};
+
+        for (const [key, value] of Object.entries(rawFilters)) {//cleaning undefined/null/'' values
+          if (value !== undefined && value !== null && value !== '') {
+            variables[key] = value;
+          }
+        }
+
+        // if no valid filters, call to list()
+        if (Object.keys(variables).length === 0) {
+          if (ops.list) {
+            const listFn = dcSdk[ops.list];
+            if (typeof listFn !== 'function') {
+              throw new Error(
+                `Data Connect operation "${ops.list}" not found for entity "${entityName}".`
+              );
+            }
+            return listFn(dataConnect);
+          }
+          throw new Error(`${entityName}.filter received no valid filters and no list operation`);
+        }
+
+        return fn(dataConnect, variables);
+      },
+    }),
+
+  };
+});
+
+
+// --- Main SDK Export ---
+export const krowSDK = {
+  auth: authModule,
+  integrations: {
+    Core: coreIntegrationsModule,
+  },
+  entities: entitiesModule,
+};