v3.25.4
Cover
Feb. 02, 2026
Entity Addresses [Line Items]  
Document Type S-3
Amendment Flag false
Entity Registrant Name Cloudastructure, Inc.
Entity Central Index Key 0001709628
Entity Tax Identification Number 87-0690564
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 228 Hamilton Avenue
Entity Address, Address Line Two 3rd Floor
Entity Address, City or Town Palo Alto
Entity Address, State or Province CA
Entity Address, Postal Zip Code 94301
City Area Code (650)
Local Phone Number 644-4160
Entity Filer Category Non-accelerated Filer
Entity Small Business true
Entity Emerging Growth Company true
Elected Not To Use the Extended Transition Period false
Document Creation Date Feb. 02, 2026
Business Contact [Member]  
Entity Addresses [Line Items]  
Contact Personnel Name James McCormick