Original: https://codingcat.dev/post/firebase-2026-02-ai-agent-skills-for-firebase

If you have ever watched an AI coding agent hallucinate deprecated Firebase v8 syntax or deploy wide-open Firestore rules, you know that raw LLM prompts are not enough for production backends. Following the announcement of Better code, fewer tokens: Introducing Agent Skills for Firebase by Luke Schlangen on the Official Firebase Blog (2026-02-17), here is our hands-on CodingCat.dev breakdown of what actually shipped, how it works under the hood, and how we wire it into production TypeScript, Next.js, Astro, SvelteKit, React, and Angular applications. When you ask Antigravity, Gemini CLI, Claude Code, Cursor, or any other AI agent to “add a sign-in screen” to your app, the agent has to rely on its (possibly outdated) foundational training or burn tokens reading through documentation to find the right configuration.…