Till contributed to the nix-community/NUR repository by expanding the External Repositories Catalog, focusing on improving discoverability and integration for new projects. He added a new entry for the 'pq' repository to the repos.json file, including essential metadata such as the GitHub contact and repository URL. This work involved careful JSON editing and repository management to ensure the catalog structure could accommodate future entries and support enhanced search and filtering. Although the scope was limited to a single feature over one month, Till’s updates streamlined contributor onboarding and laid the groundwork for more efficient third-party integration within the NUR ecosystem.