Overview
OmicsDI (Omics Discovery Index) represents a critical infrastructure component in the 2026 life sciences ecosystem, serving as a unified metadata harvester and indexing engine for biological datasets. It bridges the silos between proteomics, genomics, metabolomics, and transcriptomics repositories by providing a standardized search interface. The platform utilizes a sophisticated metadata schema based on Schema.org and Bioschemas to harmonize disparate data from over 20 global repositories, including PRIDE, PeptideAtlas, GEO, and Metabolights. In the current era of AI-driven drug discovery, OmicsDI provides the essential 'ground truth' metadata layer required to train Large Biological Models (LBMs) by identifying high-quality, peer-reviewed datasets across molecular levels. Its technical architecture supports semantic linking, allowing researchers to track a single biological study across multiple omics domains. This cross-omics integration is vital for systems biology approaches, enabling the identification of multi-layered biomarkers and regulatory networks. Managed by the European Bioinformatics Institute (EMBL-EBI) and international partners, OmicsDI ensures data findability, accessibility, interoperability, and reusability (FAIR principles) for the global research community.