Searching for a standalone download of this file carries significant risks. While it might seem like a quick fix—like replacing a missing screw in a piece of furniture—downloading DLLs and INI files from the internet is a primary vector for malware.
Never download steam-api.ini from untrusted sources. The file can contain plaintext login credentials. Malicious versions could redirect your server to fake Steam authentication servers. Steam-api Ini Download
This downloads the CS:GO demo depot (depot 731). Replace IDs with your target app/depot. Searching for a standalone download of this file