Strong domain-specific tool design with clear naming, comprehensive descriptions, and well-structured schemas. All 6 tools follow verb_noun naming (get_, search_, list_). Descriptions are detailed (150-250 chars) and explain WHEN to use each tool. Input schemas are complete with types and required fields. However, output schemas are not documented, LLMs cannot predict response structure for downstream chaining. Error handling guidance is absent. No tool annotations (readOnlyHint, idempotentHint) despite all being read-only operations. Parameter descriptions are strong but could specify format constraints (e.g., CELEX format pattern, language code validation).

• Document output schemas for all tools. Example: compliance_index returns [{alias, name, celex, type, date, summary}]; search_legislation returns [{celex, title, date}]. Include field types and whether results are paginated.
• Add readOnlyHint: true to all tool definitions. This signals to agents that calls are safe to retry and have no side effects.
• Add error handling guidance to descriptions. E.g., get_article: 'If CELEX is invalid, returns error with available aliases. If article number does not exist, suggests nearby articles.'
• Constrain 'lang' parameter with an enum of supported ISO 639-2/B codes (eng, fra, deu, spa, ita, etc.) instead of free-form string.
• Add schema constraints to search_legislation limit: {type: 'number', minimum: 1, maximum: 25, default: 10} to prevent LLM from passing invalid values.