This is the gold standard. Steam will compare your local files to the master copy on their server and redownload only the missing or broken parts.
Elias decoded it. It wasn't a download link. It was a command line argument for the Steam client itself. steam 64 api.dll
is a core component of the Steamworks API, developed by Valve Corporation to integrate 64-bit games with the Steam platform. It serves as a bridge that allows a game to communicate with the Steam client to handle critical functions like user authentication, achievement tracking, and multiplayer matchmaking. Core Functions of steam_api64.dll This is the gold standard