Seven tools with complete schemas and descriptions, but several critical gaps limit production readiness. All tools have input schemas with proper types and descriptions (baseline: 100% of A+ tools). Tool descriptions average ~180 chars, within the 10 - 1024 baseline. However, output schemas are undocumented (no return type specs visible), parameter descriptions lack constraint details (e.g., valid sector codes, spending ranges), and error handling is absent. rio_compute_event has a complex nested event_spec parameter with underdocumented dependencies (visitor_groups vs n_outsider precedence is mentioned in description but not formalized). No tool declares permissions, audit trails, or recovery guidance. Naming is clear and verb-forward (rio_list_*, rio_compute_*, rio_load_*, rio_check_*, rio_render_*), following the verb_noun convention well.

• Document return types for all tools. Add a 'Returns' section to each docstring specifying field names, types, and nested structure. E.g., rio_compute_effects returns {region: str, table_year: int, lines: [{sector_code: str, ...}], totals: {production_in_region_mw: float, ...}}.
• Add explicit constraints to parameter descriptions. E.g., 'amount_mw (number, ≥0): Spending in million won' and 'vendor_in_region_share (number, 0 - 1, default 1.0): In-region capture fraction'.
• Formalize parameter dependencies in rio_compute_event. State: 'Either visitor_groups OR n_outsider; visitor_groups takes precedence if both provided. Omit n_outsider if using visitor_groups.'
• Add error handling examples. Document what happens if sector_code is not found, xlsx_path is invalid, or region/table_year combination is unsupported. Provide recovery steps (e.g., 'Call rio_list_coefficients to see available regions/years').
• Declare permissions and audit requirements. Add a note: 'Requires cache write access. All calls logged with timestamp, region, table_year, and user ID for compliance.'