An ESP8266/ESP32-AT library for Arduino providing an easy-to-use way to manipulate ESP8266/ESP32-AT library. For AVR, Teensy, SAM DUE, SAMD21, SAMD51, STM32, nRF52 boards running ESP8266/ESP32 AT-command shields. The library supports HTTP GET and POST requests, provides argument parsing, handles one client at a time.