NYC Open Data’s mission is Open Data for All. In order to meet that goal, we must examine our Data Dictionaries— the metadata we provide to all Open Data users. Well-written, user-friendly data dictionaries help users to become self-reliant, able to answer their own questions about a dataset without needing to contact an Open Data Coordinator for clarification. NYC Open Data partnered with the Metropolitan Library Council (METRO), Pratt Institute, Sloan Foundation, The Mayor’s Fund to Advance New York City, Tiny Panther Consulting, New York Public Library, Queens Public Library and Brooklyn Public Library to implement an initiative called Metadata for All in the Summer of 2018.