diff --git a/apps/browser-extension/entrypoints/background.ts b/apps/browser-extension/entrypoints/background.ts
index 12126115..81c67394 100644
--- a/apps/browser-extension/entrypoints/background.ts
+++ b/apps/browser-extension/entrypoints/background.ts
@@ -1,7 +1,8 @@
 import { TwitterImporter, type TwitterImportConfig } from '../utils/twitter-import';
 import { captureTwitterTokens } from '../utils/twitter-auth';
-import { CONTEXT_MENU_IDS, MESSAGE_TYPES, API_ENDPOINTS, CONTAINER_TAGS } from '../utils/constants';
+import { CONTEXT_MENU_IDS, MESSAGE_TYPES, CONTAINER_TAGS } from '../utils/constants';
 import type { ExtensionMessage, MemoryPayload } from '../utils/types';
+import { getDefaultProject, saveMemory, searchMemories } from '../utils/api';
 
 export default defineBackground(() => {
   let twitterImporter: TwitterImporter | null = null;
@@ -69,34 +70,23 @@ export default defineBackground(() => {
    */
   const saveMemoryToSupermemory = async (data: any): Promise<{ success: boolean; data?: any; error?: string }> => {
     try {
-      const result = await browser.storage.local.get(['bearerToken']);
-      const bearerToken = result.bearerToken;
-
-      if (!bearerToken) {
-        return { success: false, error: 'No authentication token found' };
+      let containerTag: string = CONTAINER_TAGS.DEFAULT_PROJECT;
+      try {
+        const defaultProject = await getDefaultProject();
+        if (defaultProject?.containerTag) {
+          containerTag = defaultProject.containerTag;
+        }
+      } catch (error) {
+        console.warn('Failed to get default project, using fallback:', error);
       }
 
       const payload: MemoryPayload = {
-        containerTags: [CONTAINER_TAGS.DEFAULT_PROJECT],
+        containerTags: [containerTag],
         content: data.highlightedText + '\n\n' + data.html + '\n\n' + data?.url,
         metadata: { sm_source: 'consumer' },
       };
 
-      const response = await fetch(`${API_ENDPOINTS.SUPERMEMORY_API}/v3/memories`, {
-        method: 'POST',
-        credentials: 'omit',
-        headers: {
-          'Content-Type': 'application/json',
-          Authorization: `Bearer ${bearerToken}`,
-        },
-        body: JSON.stringify(payload),
-      });
-
-      if (!response.ok) {
-        return { success: false, error: `API call failed: ${response.status}` };
-      }
-
-      const responseData = await response.json();
+      const responseData = await saveMemory(payload);
       return { success: true, data: responseData };
     } catch (error) {
       return {
@@ -108,35 +98,11 @@ export default defineBackground(() => {
 
   const getRelatedMemories = async (data: any): Promise<{ success: boolean; data?: any; error?: string }> => {
     try {
-      const result = await browser.storage.local.get(['bearerToken']);
-      const bearerToken = result.bearerToken;
-
-      if (!bearerToken) {
-        return { success: false, error: 'No authentication token found' };
-      }
-
-      const response = await fetch(`${API_ENDPOINTS.SUPERMEMORY_API}/v3/search`, {
-        method: 'POST',
-        credentials: 'omit',
-        headers: {
-          'Content-Type': 'application/json',
-          Authorization: `Bearer ${bearerToken}`,
-        },
-        body: JSON.stringify({
-          q: data
-        }),
-      });
-
-      if (!response.ok) {
-        return { success: false, error: `API call failed: ${response.status}` };
-      }
-
-      const responseData = await response.json();
+      const responseData = await searchMemories(data);
       const content = responseData.results[0].chunks[0].content;
       console.log('Content:', content);
       return { success: true, data: content };
-    }
-    catch(error){
+    } catch (error) {
       return {
         success: false,
         error: error instanceof Error ? error.message : 'Unknown error',
diff --git a/apps/browser-extension/entrypoints/popup/App.css b/apps/browser-extension/entrypoints/popup/App.css
index d088d98b..eab4fe8f 100644
--- a/apps/browser-extension/entrypoints/popup/App.css
+++ b/apps/browser-extension/entrypoints/popup/App.css
@@ -1,7 +1,8 @@
 .popup-container {
   width: 320px;
   padding: 0;
-  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
+  font-family:
+    -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
   background: #ffffff;
   border-radius: 8px;
 }
@@ -78,7 +79,8 @@
   line-height: 1.4;
 }
 
-.authenticated, .unauthenticated {
+.authenticated,
+.unauthenticated {
   text-align: left;
 }
 
@@ -114,3 +116,170 @@
   height: 20px;
   flex-shrink: 0;
 }
+
+/* Project Selection Styles */
+.project-section {
+  margin-bottom: 16px;
+  padding: 10px;
+  background-color: #f8f9fa;
+  border-radius: 3%;
+  border: 1px solid #e9ecef;
+}
+
+.project-header {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+}
+
+.project-label {
+  font-size: 13px;
+  font-weight: 500;
+  color: #495057;
+}
+
+.project-change-btn {
+  padding: 4px 8px;
+  background-color: #ffffff;
+  color: #000000;
+  border: 1px solid #ced4da;
+  border-radius: 4px;
+  font-size: 12px;
+  cursor: pointer;
+  transition: background-color 0.2s ease;
+}
+
+.project-change-btn:hover {
+  background-color: #f8f9fa;
+}
+
+.project-current {
+  padding: 4px 0;
+}
+
+.project-info {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+}
+
+.project-name {
+  font-size: 14px;
+  font-weight: 500;
+  color: #000000;
+  flex: 1;
+  text-overflow: ellipsis;
+  overflow: hidden;
+  white-space: nowrap;
+}
+
+.project-count {
+  font-size: 12px;
+  color: #6c757d;
+  margin-left: 8px;
+}
+
+.project-none {
+  font-size: 14px;
+  color: #6c757d;
+  font-style: italic;
+}
+
+/* Project Selector Modal */
+.project-selector {
+  position: absolute;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  background-color: #ffffff;
+  border-radius: 8px;
+  z-index: 100;
+  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
+}
+
+.project-selector-header {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  padding: 16px;
+  border-bottom: 1px solid #e5e7eb;
+  font-size: 16px;
+  font-weight: 600;
+}
+
+.project-close-btn {
+  background: none;
+  border: none;
+  font-size: 20px;
+  cursor: pointer;
+  color: #6c757d;
+  padding: 0;
+  width: 24px;
+  height: 24px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+
+.project-close-btn:hover {
+  color: #000000;
+}
+
+.project-loading {
+  padding: 32px 16px;
+  text-align: center;
+  color: #6c757d;
+  font-size: 14px;
+}
+
+.project-list {
+  max-height: 240px;
+  overflow-y: auto;
+}
+
+.project-item {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  padding: 12px 16px;
+  cursor: pointer;
+  transition: background-color 0.2s ease;
+  border-bottom: 1px solid #f1f3f4;
+}
+
+.project-item:hover {
+  background-color: #f8f9fa;
+}
+
+.project-item:last-child {
+  border-bottom: none;
+}
+
+.project-item.selected {
+  background-color: #e3f2fd;
+}
+
+.project-item-info {
+  display: flex;
+  flex-direction: column;
+  flex: 1;
+  gap: 2px;
+}
+
+.project-item-name {
+  font-size: 14px;
+  font-weight: 500;
+  color: #000000;
+}
+
+.project-item-count {
+  font-size: 12px;
+  color: #6c757d;
+}
+
+.project-item-check {
+  color: #1976d2;
+  font-weight: bold;
+  font-size: 16px;
+}
diff --git a/apps/browser-extension/entrypoints/popup/App.tsx b/apps/browser-extension/entrypoints/popup/App.tsx
index 84691a57..796a42be 100644
--- a/apps/browser-extension/entrypoints/popup/App.tsx
+++ b/apps/browser-extension/entrypoints/popup/App.tsx
@@ -1,15 +1,31 @@
 import React, { useState, useEffect } from 'react';
 import './App.css';
+import { getProjects, getDefaultProject, setDefaultProject } from '../../utils/api';
+import { Project } from '../../utils/types';
 
 function App() {
   const [userSignedIn, setUserSignedIn] = useState<boolean>(false);
   const [loading, setLoading] = useState<boolean>(true);
+  const [projects, setProjects] = useState<Project[]>([]);
+  const [defaultProject, setDefaultProjectState] = useState<Project | null>(null);
+  const [loadingProjects, setLoadingProjects] = useState<boolean>(false);
+  const [showProjectSelector, setShowProjectSelector] = useState<boolean>(false);
 
   useEffect(() => {
     const checkAuthStatus = async () => {
       try {
         const result = await chrome.storage.local.get(['bearerToken']);
-        setUserSignedIn(!!result.bearerToken);
+        const isSignedIn = !!result.bearerToken;
+        setUserSignedIn(isSignedIn);
+        
+        if (isSignedIn) {
+          try {
+            const defaultProj = await getDefaultProject();
+            setDefaultProjectState(defaultProj);
+          } catch (error) {
+            console.error('Error loading default project:', error);
+          }
+        }
       } catch (error) {
         console.error('Error checking auth status:', error);
         setUserSignedIn(false);
@@ -30,6 +46,44 @@ function App() {
     }
   };
 
+  const loadProjects = async () => {
+    setLoadingProjects(true);
+    try {
+      const projectsList = await getProjects();
+      setProjects(projectsList);
+      console.log('Projects:', projectsList);
+      console.log('Default project:', defaultProject);
+      // If no default project is set and projects are available, set first as default
+      if (!defaultProject && projectsList.length > 0) {
+        const firstProject = projectsList[0];
+        await setDefaultProject(firstProject);
+        setDefaultProjectState(firstProject);
+      }
+    } catch (error) {
+      console.error('Error loading projects:', error);
+    } finally {
+      setLoadingProjects(false);
+    }
+  };
+
+  const handleProjectSelect = async (project: Project) => {
+    try {
+      await setDefaultProject(project);
+      setDefaultProjectState(project);
+      setShowProjectSelector(false);
+    } catch (error) {
+      console.error('Error setting default project:', error);
+    }
+  };
+
+  const handleShowProjectSelector = () => {
+    console.log('handleShowProjectSelector, projects.length:', projects.length);
+    if (projects.length === 0) {
+      loadProjects();
+    }
+    setShowProjectSelector(true);
+  };
+
   if (loading) {
     return (
       <div className="popup-container">
@@ -53,10 +107,63 @@ function App() {
       <div className="content">
         {userSignedIn ? (
           <div className="authenticated">
-            <div className="status">
-              <span className="status-indicator signed-in"></span>
-              <span>Signed in</span>
+            
+            <div className="project-section">
+              <div className="project-header">
+                <span className="project-label">Default Project:</span>
+                <button 
+                  className="project-change-btn" 
+                  onClick={handleShowProjectSelector}
+                >
+                  Change
+                </button>
+              </div>
+              <div className="project-current">
+                {defaultProject ? (
+                  <div className="project-info">
+                    <span className="project-name">{defaultProject.name}</span>
+                  </div>
+                ) : (
+                  <span className="project-none">No project selected</span>
+                )}
+              </div>
             </div>
+
+            {showProjectSelector && (
+              <div className="project-selector">
+                <div className="project-selector-header">
+                  <span>Select Default Project</span>
+                  <button 
+                    className="project-close-btn"
+                    onClick={() => setShowProjectSelector(false)}
+                  >
+                    ×
+                  </button>
+                </div>
+                {loadingProjects ? (
+                  <div className="project-loading">Loading projects...</div>
+                ) : (
+                  <div className="project-list">
+                    {projects.map((project) => (
+                      <div
+                        key={project.id}
+                        className={`project-item ${defaultProject?.id === project.id ? 'selected' : ''}`}
+                        onClick={() => handleProjectSelect(project)}
+                      >
+                        <div className="project-item-info">
+                          <span className="project-item-name">{project.name}</span>
+                          <span className="project-item-count">{project.documentCount} docs</span>
+                        </div>
+                        {defaultProject?.id === project.id && (
+                          <span className="project-item-check">✓</span>
+                        )}
+                      </div>
+                    ))}
+                  </div>
+                )}
+              </div>
+            )}
+            
             <div className="actions">
               <button
                 onClick={() => {
diff --git a/apps/browser-extension/utils/api.ts b/apps/browser-extension/utils/api.ts
new file mode 100644
index 00000000..cbd41311
--- /dev/null
+++ b/apps/browser-extension/utils/api.ts
@@ -0,0 +1,188 @@
+/**
+ * API service for Supermemory browser extension
+ */
+import { API_ENDPOINTS, STORAGE_KEYS } from './constants';
+import { 
+  Project, 
+  ProjectsResponse, 
+  MemoryPayload,
+  SupermemoryAPIError, 
+  AuthenticationError 
+} from './types';
+
+/**
+ * Get bearer token from storage
+ */
+async function getBearerToken(): Promise<string> {
+  const result = await chrome.storage.local.get([STORAGE_KEYS.BEARER_TOKEN]);
+  const token = result[STORAGE_KEYS.BEARER_TOKEN];
+  
+  if (!token) {
+    throw new AuthenticationError('Bearer token not found');
+  }
+  
+  return token;
+}
+
+/**
+ * Make authenticated API request
+ */
+async function makeAuthenticatedRequest<T>(
+  endpoint: string,
+  options: RequestInit = {}
+): Promise<T> {
+  const token = await getBearerToken();
+  
+  const response = await fetch(`${API_ENDPOINTS.SUPERMEMORY_API}${endpoint}`, {
+    ...options,
+    credentials: 'omit',
+    headers: {
+      'Authorization': `Bearer ${token}`,
+      'Content-Type': 'application/json',
+      ...options.headers,
+    },
+  });
+
+  if (!response.ok) {
+    if (response.status === 401) {
+      throw new AuthenticationError('Invalid or expired token');
+    }
+    throw new SupermemoryAPIError(
+      `API request failed: ${response.statusText}`,
+      response.status
+    );
+  }
+
+  return response.json();
+}
+
+/**
+ * Fetch all projects from API
+ */
+export async function fetchProjects(): Promise<Project[]> {
+  try {
+    const response = await makeAuthenticatedRequest<ProjectsResponse>('/v3/projects');
+    return response.projects;
+  } catch (error) {
+    console.error('Failed to fetch projects:', error);
+    throw error;
+  }
+}
+
+/**
+ * Get projects from cache or fetch fresh
+ */
+export async function getProjects(useCache: boolean = true): Promise<Project[]> {
+  if (useCache) {
+    try {
+      const cached = await chrome.storage.local.get([STORAGE_KEYS.PROJECTS_CACHE]);
+      const cachedData = cached[STORAGE_KEYS.PROJECTS_CACHE];
+      
+      if (cachedData && cachedData.timestamp && cachedData.projects) {
+        // Cache for 5 minutes
+        const cacheAge = Date.now() - cachedData.timestamp;
+        if (cacheAge < 5 * 60 * 1000) {
+          return cachedData.projects;
+        }
+      }
+    } catch (error) {
+      console.warn('Failed to read projects cache:', error);
+    }
+  }
+
+  // Fetch fresh data
+  const projects = await fetchProjects();
+  
+  // Cache the results
+  try {
+    await chrome.storage.local.set({
+      [STORAGE_KEYS.PROJECTS_CACHE]: {
+        projects,
+        timestamp: Date.now(),
+      },
+    });
+  } catch (error) {
+    console.warn('Failed to cache projects:', error);
+  }
+
+  return projects;
+}
+
+/**
+ * Get default project from storage
+ */
+export async function getDefaultProject(): Promise<Project | null> {
+  try {
+    const result = await chrome.storage.local.get([STORAGE_KEYS.DEFAULT_PROJECT]);
+    return result[STORAGE_KEYS.DEFAULT_PROJECT] || null;
+  } catch (error) {
+    console.error('Failed to get default project:', error);
+    return null;
+  }
+}
+
+/**
+ * Set default project in storage
+ */
+export async function setDefaultProject(project: Project): Promise<void> {
+  try {
+    await chrome.storage.local.set({
+      [STORAGE_KEYS.DEFAULT_PROJECT]: project,
+    });
+  } catch (error) {
+    console.error('Failed to set default project:', error);
+    throw error;
+  }
+}
+
+/**
+ * Save memory to Supermemory API
+ */
+export async function saveMemory(payload: MemoryPayload): Promise<any> {
+  try {
+    const response = await makeAuthenticatedRequest<any>('/v3/memories', {
+      method: 'POST',
+      body: JSON.stringify(payload),
+    });
+    return response;
+  } catch (error) {
+    console.error('Failed to save memory:', error);
+    throw error;
+  }
+}
+
+/**
+ * Search memories using Supermemory API
+ */
+export async function searchMemories(query: string): Promise<any> {
+  try {
+    const response = await makeAuthenticatedRequest<any>('/v3/search', {
+      method: 'POST',
+      body: JSON.stringify({ q: query }),
+    });
+    return response;
+  } catch (error) {
+    console.error('Failed to search memories:', error);
+    throw error;
+  }
+}
+
+/**
+ * Save tweet to Supermemory API (specific for Twitter imports)
+ */
+export async function saveTweet(content: string, metadata: any, containerTag: string = 'sm_project_twitter_bookmarks'): Promise<void> {
+  try {
+    const payload: MemoryPayload = {
+      containerTags: [containerTag],
+      content,
+      metadata,
+    };
+    await saveMemory(payload);
+  } catch (error) {
+    if (error instanceof SupermemoryAPIError && error.statusCode === 409) {
+      // Skip if already exists (409 Conflict)
+      return;
+    }
+    throw error;
+  }
+}
\ No newline at end of file
diff --git a/apps/browser-extension/utils/constants.ts b/apps/browser-extension/utils/constants.ts
index 184a3cb7..db76c1d8 100644
--- a/apps/browser-extension/utils/constants.ts
+++ b/apps/browser-extension/utils/constants.ts
@@ -16,6 +16,8 @@ export const STORAGE_KEYS = {
   TWITTER_COOKIE: 'cookie',
   TWITTER_CSRF: 'csrf',
   TWITTER_AUTH_TOKEN: 'auth',
+  DEFAULT_PROJECT: 'defaultProject',
+  PROJECTS_CACHE: 'projectsCache',
 } as const;
 
 /**
diff --git a/apps/browser-extension/utils/twitter-import.ts b/apps/browser-extension/utils/twitter-import.ts
index 6349a3f8..22794bfe 100644
--- a/apps/browser-extension/utils/twitter-import.ts
+++ b/apps/browser-extension/utils/twitter-import.ts
@@ -13,6 +13,7 @@ import {
   type Tweet 
 } from './twitter-utils';
 import { getTwitterTokens, createTwitterAPIHeaders, type TwitterAuthTokens } from './twitter-auth';
+import { saveTweet } from './api';
 
 export type ImportProgressCallback = (message: string) => Promise<void>;
 
@@ -53,48 +54,20 @@ class RateLimiter {
  * @returns Promise that resolves when tweet is imported
  */
 async function importTweet(tweetMd: string, tweet: Tweet): Promise<void> {
-  return new Promise<void>((resolve, reject) => {
-    browser.storage.local.get(['bearerToken'], ({ bearerToken }) => {
-      if (!bearerToken) {
-        reject(new Error('No bearer token found'));
-        return;
-      }
-      
-      const backendURL = 'https://api.supermemory.ai';
-      
-      fetch(`${backendURL}/v3/memories`, {
-        method: 'POST',
-        headers: {
-          'Content-Type': 'application/json',
-          Authorization: `Bearer ${bearerToken}`,
-        },
-        body: JSON.stringify({
-          containerTags: ['sm_project_twitter_bookmarks'],
-          content: tweetMd,
-          metadata: { 
-            sm_source: 'twitter_bookmarks',
-            tweet_id: tweet.id_str,
-            author: tweet.user.screen_name,
-            created_at: tweet.created_at,
-            likes: tweet.favorite_count,
-            retweets: tweet.retweet_count || 0,
-          },
-        }),
-      })
-      .then(async (response) => {
-        if (!response.ok) {
-          if (response.status === 409) {
-            resolve(); // Skip if already exists
-          } else {
-            reject(new Error(`Failed to save tweet: ${response.status}`));
-          }
-        } else {
-          resolve();
-        }
-      })
-      .catch(reject);
-    });
-  });
+  const metadata = { 
+    sm_source: 'consumer',
+    tweet_id: tweet.id_str,
+    author: tweet.user.screen_name,
+    created_at: tweet.created_at,
+    likes: tweet.favorite_count,
+    retweets: tweet.retweet_count || 0,
+  };
+
+  try {
+    await saveTweet(tweetMd, metadata);
+  } catch (error) {
+    throw new Error(`Failed to save tweet: ${error instanceof Error ? error.message : 'Unknown error'}`);
+  }
 }
 
 /**
diff --git a/apps/browser-extension/utils/types.ts b/apps/browser-extension/utils/types.ts
index 0f390da5..69cccf0f 100644
--- a/apps/browser-extension/utils/types.ts
+++ b/apps/browser-extension/utils/types.ts
@@ -66,6 +66,11 @@ export interface StorageData {
   cookie?: string;
   csrf?: string;
   auth?: string;
+  defaultProject?: Project;
+  projectsCache?: {
+    projects: Project[];
+    timestamp: number;
+  };
 }
 
 /**
@@ -128,4 +133,17 @@ export class AuthenticationError extends ExtensionError {
     super(message, 'AUTH_ERROR');
     this.name = 'AuthenticationError';
   }
+}
+
+export interface Project {
+  id: string;
+  name: string;
+  containerTag: string;
+  createdAt: string;
+  updatedAt: string;
+  documentCount: number;
+}
+
+export interface ProjectsResponse {
+  projects: Project[];
 }
\ No newline at end of file
diff --git a/apps/browser-extension/utils/ui-components.ts b/apps/browser-extension/utils/ui-components.ts
index 73422d55..73305ea8 100644
--- a/apps/browser-extension/utils/ui-components.ts
+++ b/apps/browser-extension/utils/ui-components.ts
@@ -114,8 +114,8 @@ export function createTwitterImportButton(onClick: () => void): HTMLElement {
   button.id = ELEMENT_IDS.TWITTER_IMPORT_BUTTON;
   button.style.cssText = `
     position: fixed;
-    bottom: 20px;
-    right: 20px;
+    top: 10px;
+    right: 10px;
     z-index: 2147483646;
     background: #ffffff;
     color: black;
@@ -195,7 +195,7 @@ export function createTwitterImportUI(
     ${isAuthenticated ? `
       <div>
         <p style="color: #536471; font-size: 14px; margin: 0 0 12px 0; line-height: 1.4;">
-          This will import all your Twitter bookmarks to Supermemory. Make sure you're logged into Twitter/X first.
+          This will import all your Twitter bookmarks to Supermemory
         </p>
         
         <button id="${ELEMENT_IDS.TWITTER_IMPORT_BTN}" style="width: 100%; background: #1d9bf0; color: white; border: none; border-radius: 20px; padding: 12px 16px; cursor: pointer; font-size: 14px; font-weight: 500; margin-bottom: 12px;">