Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100%, so the baseline is 3, but the description adds meaning the schema does not enforce: it frames contact_id and property_reference as an 'and/or' pair where at least one is expected, even though the schema marks only 'note' as required. It also reiterates that contact_id comes from find_contacts, aiding correct invocation.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.