--- name: firebase-mobile description: Firebase backend services integration for mobile apps version: 1.0.0 category: Backend Services slug: firebase-mobile status: active graph: domains: [domain:mobile] specializations: [specialization:mobile-development] skillAreas: [skill-area:push-notifications, skill-area:analytics-tracking] roles: [role:mobile-engineer] workflows: [workflow:feature-development, workflow:release-management] topics: [topic:accessibility] --- # Firebase Mobile Skill ## Overview This skill provides Firebase backend services integration for mobile applications. It enables configuration of Authentication, Firestore, Storage, Cloud Functions, and other Firebase services. ## Allowed Tools - `bash` - Execute Firebase CLI commands - `read` - Analyze Firebase configurations - `write` - Generate security rules and configurations - `edit` - Update Firebase implementations - `glob` - Search for Firebase files - `grep` - Search for patterns ## Capabilities ### Firebase Authentication 1. **Auth Methods** - Email/password authentication - OAuth providers (Google, Apple, Facebook) - Phone authentication - Anonymous authentication - Custom token authentication 2. **Auth State** - Handle auth state changes - Token refresh - Session persistence - Multi-factor authentication ### Cloud Firestore 3. **Database Operations** - Document CRUD operations - Collection queries - Real-time listeners - Batch operations - Transactions 4. **Security Rules** - Write Firestore rules - Test rules with emulator - Handle role-based access - Validate data structure ### Firebase Storage 5. **File Operations** - Upload files with progress - Download files - Generate download URLs - Handle metadata - Configure security rules ### Cloud Functions 6. **Function Integration** - Call HTTPS functions - Call callable functions - Handle function responses - Configure timeouts ### Remote Config 7. **Feature Flags** - Fetch remote config - Configure defaults - Handle fetch intervals - A/B testing setup ### Performance Monitoring 8. **Performance Tracking** - Automatic traces - Custom traces - Network request monitoring - Screen rendering metrics ## Target Processes - `firebase-backend-integration.js` - Firebase integration - `firebase-cloud-messaging.js` - Push notifications - `mobile-analytics-setup.js` - Analytics ## Dependencies - Firebase SDK - Firebase CLI - Google Cloud account ## Usage Examples ### Firebase Setup (iOS) ```swift // AppDelegate.swift import FirebaseCore import FirebaseAuth import FirebaseFirestore @main class AppDelegate: UIResponder, UIApplicationDelegate { func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool { FirebaseApp.configure() return true } } // AuthService.swift class AuthService: ObservableObject { @Published var user: User? private var handle: AuthStateDidChangeListenerHandle? init() { handle = Auth.auth().addStateDidChangeListener { [weak self] _, user in self?.user = user } } func signIn(email: String, password: String) async throws { try await Auth.auth().signIn(withEmail: email, password: password) } func signUp(email: String, password: String) async throws { try await Auth.auth().createUser(withEmail: email, password: password) } func signOut() throws { try Auth.auth().signOut() } } ``` ### Firestore Repository (Android) ```kotlin // data/repository/PostRepository.kt class PostRepository @Inject constructor( private val firestore: FirebaseFirestore ) { private val postsCollection = firestore.collection("posts") fun observePosts(): Flow> = callbackFlow { val listener = postsCollection .orderBy("createdAt", Query.Direction.DESCENDING) .addSnapshotListener { snapshot, error -> if (error != null) { close(error) return@addSnapshotListener } val posts = snapshot?.documents?.mapNotNull { it.toObject() } ?: emptyList() trySend(posts) } awaitClose { listener.remove() } } suspend fun createPost(post: Post): String { val docRef = postsCollection.add(post).await() return docRef.id } suspend fun updatePost(postId: String, updates: Map) { postsCollection.document(postId).update(updates).await() } suspend fun deletePost(postId: String) { postsCollection.document(postId).delete().await() } } ``` ### Security Rules ```javascript // firestore.rules rules_version = '2'; service cloud.firestore { match /databases/{database}/documents { function isAuthenticated() { return request.auth != null; } function isOwner(userId) { return isAuthenticated() && request.auth.uid == userId; } match /users/{userId} { allow read: if isAuthenticated(); allow write: if isOwner(userId); } match /posts/{postId} { allow read: if true; allow create: if isAuthenticated() && request.resource.data.authorId == request.auth.uid; allow update, delete: if isOwner(resource.data.authorId); } } } ``` ### Firebase Emulator ```bash # Start emulators firebase emulators:start # Run with emulator in code if ProcessInfo.processInfo.environment["USE_FIREBASE_EMULATOR"] == "YES" { Auth.auth().useEmulator(withHost: "localhost", port: 9099) Firestore.firestore().useEmulator(withHost: "localhost", port: 8080) Storage.storage().useEmulator(withHost: "localhost", port: 9199) } ``` ## Quality Gates - Security rules tested with emulator - Authentication flows verified - Offline persistence tested - Error handling comprehensive ## Related Skills - `push-notifications` - FCM integration - `mobile-analytics` - Firebase Analytics - `mobile-security` - Security patterns ## Version History - 1.0.0 - Initial release --- Source attribution: a5c-ai Original project: https://github.com/a5c-ai/babysitter/blob/feb68abe397acc14f32b34984975c48fedba2b33/library/specializations/mobile-development/skills/firebase-mobile/SKILL.md License: MIT License information: https://opensource.org/license/mit Original upstream instructions; downloaded from Dave AI. ## Upstream license notice # MIT License Copyright (c) 2025 A5C AI Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # Dave AI resource metadata Creator / publisher: a5c-ai Original project: https://github.com/a5c-ai/babysitter/blob/feb68abe397acc14f32b34984975c48fedba2b33/library/specializations/mobile-development/skills/firebase-mobile/SKILL.md Attribution basis: Recovered original package and original project license at a pinned revision Fields of work: Development & Engineering, Product Management Roles: Backend Developer, Mobile Developer, Product Manager Specialties: Backend Tools: Firebase Country applicability: Country not specified Classification basis: Source catalog labels Instruction SHA-256: 40179fd1ec6b388dd5f43bb06658f689a241da60fe764ff19d89eb546c68ca2e Metadata reviewed: 2026-10-27 This metadata supersedes earlier Dave AI catalog attribution. Original instruction and supporting files are preserved.