mmcif-skills

mmCIF dictionary reference for developers working with PDBx/mmCIF format. Use this skill whenever the user needs to look up mmCIF category or item definitions, find which categories contain specific data (e.g., "where are coordinates stored?", "what category has resolution?"), explore parent-child relationships between categories, or search the dictionary for relevant terms. Also use when the user is building an mmCIF parser, migrating PDB-format code to mmCIF, or needs to understand mmCIF data structure for any programming task. Triggers on mentions of mmCIF, PDBx, CIF dictionary, PDB format migration, or specific mmCIF category/item names like _atom_site, _cell, _refln, etc.