v3.26.1
Cover - USD ($)
 12 Months Ended
Dec. 31, 2025
Mar. 31, 2026
Jun. 30, 2025
Document Type 10-K    
Amendment Flag false    
Document Annual Report true    
Document Transition Report false    
Document Period End Date Dec. 31, 2025    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2025    
Current Fiscal Year End Date --12-31    
Entity File Number 001-41751    
Entity Registrant Name MDB CAPITAL HOLDINGS, LLC    
Entity Central Index Key 0001934642    
Entity Tax Identification Number 87-4366624    
Entity Incorporation, State or Country Code DE    
Entity Address, Address Line One 14135 Midway Road    
Entity Address, Address Line Two Suite G-150    
Entity Address, City or Town Addison    
Entity Address, State or Province TX    
Entity Address, Postal Zip Code 75001    
City Area Code (945)    
Local Phone Number 262-9012    
Title of 12(b) Security Class A Common Shares, representing Limited Liability Interests    
Trading Symbol MDBH    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers Yes    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company true    
Elected Not To Use the Extended Transition Period true    
Entity Shell Company false    
Entity Public Float     $ 22,178,831
Documents Incorporated by Reference [Text Block] None    
ICFR Auditor Attestation Flag false    
Document Financial Statement Error Correction [Flag] false    
Auditor Name RBSM LLP    
Auditor Location New York    
Auditor Firm ID 587    
Auditor Opinion [Text Block] We have audited the accompanying consolidated balance sheets of MDB Capital Holdings, LLC and Subsidiaries (collectively, the “Company”) as of December 31, 2025 and 2024, and the related consolidated statements of operations, equity and cash flows for each of the two years in the period ended December 31, 2025, and the related notes (collectively referred to as the consolidated financial statements). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2025 and 2024, and the results of its operations and its cash flows for each of the two years in the period ended December 31, 2025, in conformity with accounting principles generally accepted in the United States of America.    
Common Class A [Member]      
Entity Common Stock, Shares Outstanding   5,300,132  
Common Class B [Member]      
Entity Common Stock, Shares Outstanding   5,000,000