Single tool 'search_precedents' has a complete input schema with 9 parameters, all with type definitions and descriptions in Korean. However, the tool description is minimal (16 chars in English: '대한민국 법원 판례를 검색합니다.' = 'Search Korean court precedents.'), falling below the 20-char threshold. No output schema is documented, the code shows XML/JSON parsing but does not declare what fields the LLM should expect. Parameter descriptions are present but terse (e.g., 'court_type' just says '법원종류 (대법원: 400201, 하위법원: 400202)' without explaining when to use each). No error handling guidance is visible, API failures return raw error dicts without recovery hints. The tool lacks idempotency hints, permission declarations, and audit logging. Naming is clear (verb_noun: search_precedents), but the overall definition lacks LLM-optimization and production-grade structure.

• Expand tool description to 50 - 150 chars: 'Search Korean court precedents by keyword, court, date range, or case number. Returns up to 100 results with case details, court name, and decision date. Use this to find relevant case law before drafting legal arguments.'
• Document output schema in tool definition: 'Returns {totalCnt: int, prec: [{caseNumber: str, courtName: str, decisionDate: str, caseTitle: str, summary: str, ...}]}'. Include which fields are always present vs. optional.
• Translate parameter descriptions to English and expand with enum explanations: 'court_type: Court classification (400201=Supreme Court, 400202=Lower courts). Use 400201 for binding precedent, 400202 for regional variation.'
• Add error handling guidance: On API timeout, return 'Search timed out. Try narrowing date_range or reducing limit. Retry in 5 seconds.' On empty results, return 'No precedents found. Try broader keywords or remove date_range filter.'
• Add pagination note to description: 'Results are limited to 100 per call. For larger searches, use date_range to split queries across multiple calls, or implement cursor-based iteration if API supports it.'

Inferred effective spec: <=2025-11-25.

• Relies on Logging (deprecated) - log to stderr or use OpenTelemetry