Despite two centuries of research, the origin of the highly volatile elements (H2O, CO2, N2, noble gases, S, halogens) on Earth and their role in habitability remain debated. In particular, uncertainties persist regarding the exact nature of the parent bodies for these elements (enstatite chondrites, carbonaceous chondrites, comets), the biases due to terrestrial contamination, and the impact of metamorphism on their abundances. The HiVEC project aims to determine the bulk volatile element composition (H2O, CO2, N2, S, halogens) and the noble gas composition (elemental and isotopic) of a large number of chondrites, in order to constrain the composition of the primordial Earth’s atmosphere and its origin. This represents a methodological breakthrough, thanks to the exhaustive analysis of a single sample (a few mg) combining incremental laser heating under ultra-high vacuum, pressure measurements using capacitive gauges, quantitative analysis by QMS, and high-precision noble gas isotope spectrometry (Noblesse 5F5M mass spectrometer). The project is clearly at the heart of the PEPR Origins, as it aims to quantify the volatile element budget in the parent bodies and the nature of the primitive atmosphere, in order to understand the emergence of habitability conditions on Earth and other terrestrial planets.