Firebase

Covers the full Firebase stack with a realistic edge: security rules are harder than they look, and pricing surprises happen when you design listeners poorly. The patterns show modular SDK imports for tree-shaking, security rule helpers that actually make sense, and data modeling that embraces denormalization instead of fighting it. Includes real-time listener cleanup, which matters because forgotten subscriptions burn reads. The scope smartly punts payments to Stripe and auth flows to OAuth skills. Useful if you're past the tutorial phase and need to see how Firebase patterns actually work in production, especially around Firestore query limitations and the read-heavy tradeoffs.

skills.sh installs: 1.3K
GitHub stars: 43.1K
last updated: Jul 14, 2026

View on GitHub

Install

$ npx -y skills add sickn33/antigravity-awesome-skills --skill firebase --agent claude-code

Installs into .claude/skills of the current project.

Files

Firebase

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. Choose relational versus denormalized storage from consistency and query requirements; Firestore is not the right choice for every workload.

2025 lesson: Firestore pricing can surprise you. Reads are cheap until they're not. A poorly designed listener can cost more than a dedicated database. Plan your data model for your query patterns, not your data relationships.