Yup, The Mises Institute, one of the main sources cited by libertarians even says it up front:
https://mises.org/about-mises/what-is-the-mises-Institute
These great thinkers developed praxeology, a deductive science of human action based on premises known with certainty to be true, and this is what we teach and advocate. Our scholarly work is founded in Misesian praxeology, and in self-conscious opposition to the mathematical modeling and hypothesis-testing that has created so much confusion in neoclassical economics.
In a nutshell, American-style economic libertarian philosophy rejects science in favor of belief while rejecting the need for proof. Not very different from religion. Europe libertarian philosophy is quite different. The term was made into something else by US conservative propaganda in the 1970's. By their own words, science creates "so much confusion", we need a truthy economic philosophy instead.
They go on to talk about their "Mission and "What they do".
What We Do
For scholars worldwide, the Mises Institute offers fellowships, research grants, opportunities to publish in scholarly journals, academic conferences, access to our extensive libraries, and more.
Helping students discover the economics of freedom, and inspiring them to go on to teach at the university level, is a priority for us. Since 1986, the Institute has held Mises University, a summer school for students from all over North America and the world. For more than fifteen years, we’ve offered the Rothbard Graduate Seminar, an in-depth seminar for graduate students. In total, we have provided 10,000 students at more than 1,000 colleges and universities with financial aid ranging from one-year book scholarships to full multi-year PhD fellowships.
For laymen, we offer numerous publications, seminars, online classes through Mises Academy, videos and daily commentary on timely issues (subscribe to Mises Daily at no charge).
Free propaganda for the masses and an offer of grants to write fake papers for journals and academic conferences. Millions of dollars annual budget. Tens of millions of dollars in assets. No list of donors.