Cover - shares	3 Months Ended
	Mar. 31, 2024	May 13, 2024
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Mar. 31, 2024
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2024
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	262-9010
Title of 12(b) Security	Class A Common Shares, representing Limited Liability Interests
Trading Symbol	MDBH
Security Exchange Name	NASDAQ
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 Common Stock, Shares Outstanding		4,295,632