You need an embassy visa for Saudi Arabia if you have an Indian passport
Visa options for Saudi Arabia
Visa on arrival may be available with conditions
Travellers need a visa to visit Saudi Arabia for Business or Tourism. Travellers who are permanent residents or travellers with a valid business or tourism visa issued by United Kingdom, United States, or a Schengen member state are eligible for a Visa on arrival. The visa must be valid and have been used at least once, and travellers must have an entry stamp from the issuing country. Travellers that meet these conditions can get a Visa on arrival in Saudi Arabia at the port of entry, such as an international airport or border crossing.
This is not offered by sherpa°.
Apply on the government site.