FbClient by Elikplim Kofi Nyahe is a lightweight, easy-to-use Arduino library for ESP32 and ESP8266 to interact with Firebase Realtime Database, Firestore, and Firebase Storage using simple HTTP requests.

https://blog.adafruit.com/2025/07/07/an-arduino-library-for-esp-microcontrollers-to-interact-with-firebase

https://github.com/Elikplim-N/FbClient