@maschinenlesbar.org/marktstammdatenregister-cli
    Preparing search index...

    Variable FILTER_OPERATORSConst

    FILTER_OPERATORS: readonly [
        "eq",
        "neq",
        "sw",
        "ct",
        "nct",
        "ew",
        "null",
        "nn",
        "gt",
        "lt",
    ] = ...

    The operators the register's search understands (from its web form, all checked live). gt/lt are strict and only for number/date columns; there is no gte/lte. Any other operator makes the register return 0 rows.