You can access the game API using the ID that can be taken directly from the game link (the ID is the underlined numbers):
With the ID number you can load the game API using this link:
https://pepeizqdeals.com/api/game/6391
Steam
For this way to access the game API it is necessary to know the game ID on Steam, you have two options to know the ID (the ID is the underlined numbers):
With your Steam ID number you can load the game API using this link:
https://pepeizqdeals.com/api/steam/1091500
GOG
For this way to access the game API it is necessary to know the game Slug on GOG, you have two options to know the Slug (the Slug is the underlined letters):
https://pepeizqdeals.com/gog/cyberpunk_2077
https://www.gog.com/game/cyberpunk_2077
With your GOG Slug letters you can load the game API using this link: