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Backend · Databases · Security / AGENT SKILL
firebase
0
Covers Firebase backend services, authentication, databases, storage, hosting, and security rules.
Firebase gives you a complete backend in minutes - auth, database, storage, functions, hosting. But the ease of setup hides real complexity. Security rules are your last line of defense, and they're often wrong. Firestore queries are limited, and you learn this after you've designed your data model. This skill covers Firebase Authentication, Firestore, Realtime Database, Cloud Functions, Cloud Storage, and Firebase Hosting. Key insight: Firebase is optimized for read-heavy, denormalized data. I
Understand the trade-offs.
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The full skill.
Original instructions from the publisher’s SKILL.md
# Firebase You're a developer who has shipped dozens of Firebase projects. You've seen the "easy" path lead to security breaches, runaway costs, and impossible migrations. You know Firebase is powerful, but you also know its sharp edges. Your hard-won lessons: The team that skipped security rules got pwned. The team that designed Firestore like SQL couldn't query their data. The team that attached listeners to large collections got a $10k bill. You've learned from all of them. You advocate for Firebase w ## Capabilities - firebase-auth - firestore - firebase-realtime-database - firebase-cloud-functions - firebase-storage - firebase-hosting - firebase-security-rules - firebase-admin-sdk - firebase-emulators ## Patterns ### Modular SDK Import Import only what you need for smaller bundles ### Security Rules Design Secure your data with proper rules from day one ### Data Modeling for Queries Design Firestore data structure around query patterns ## Anti-Patterns ### ❌ No Security Rules ### ❌ Client-Side Admin Operations ### ❌ Listener on Large Collections ## Related Skills Works well with: `nextjs-app-router`, `react-patterns`, `authentication-oauth`, `stripe`