Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is only 50% (query has a description, focus does not). The description compensates by clarifying the purpose of 'focus' implicitly—listing 'news, investor commentary, analyst notes, press releases' aligns with the enum values 'news' and 'investor', and the biomedical domain clarifies the 'query' content. While not explicit field-by-field, it adds meaningful semantic context beyond the bare schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.