The relentless pursuit of higher precision in optical lattice clocks (OLC) demands ever more refined methods to mitigate environmental perturbations, with blackbody radiation (BBR) induced frequency shifts standing as a major challenge. In this seminar, I will present the work carried out during my PhD to tackle this challenge: perform an in-situ measurement of the BBR seen by the atoms in the clock by exciting them into Rydberg states. First, I will introduce the principal concepts of Rydberg atoms that gives them an enhanced sensitivity to BBR. I will discuss the already existing protocols and their limits when applied to OLC experiments. Second, I will present and detail our original protocol tailored to divalent species of Rydberg atoms, leveraging their distinctive property of autoionization through doubly excited electronic states. I will develop a theoretical model based on this new framework and conclude by assessing its advantages over existing protocols. Finally, I will present the design of an experimental setup, currently under construction at LTE, aimed at validating the feasibility of this approach.