Server has 14 tools with complete input schemas and descriptions in Portuguese. Naming follows verb_noun convention (get_, list_, update_, search_, estimate_, suggest_, score_, benchmark_). Descriptions are substantive (100-250 chars typical), explaining WHAT and WHEN. Output schemas are not documented, responses are formatted as markdown strings rather than structured JSON, forcing LLMs to parse unstructured text. Error handling is minimal; no recovery guidance or categorization. Security audit logging is present (withAudit wrapper), but no permission gates or scope declarations visible. Tool composition is sound, each tool has one responsibility, and chaining IDs are returned (e.g., videoId in list_channel_videos). No tool annotations (readOnlyHint/destructiveHint) despite clear risk levels (13 READ_ONLY, 1 WRITE).

• Add tool annotations: set readOnlyHint=true for 13 READ_ONLY tools, destructiveHint=true for update_video_metadata. This enables LLMs to reason about side effects.
• Document output schemas as JSON objects with typed fields. Replace markdown string responses with structured objects (e.g., {analytics: {views: number, likes: number, ...}, period: string}).
• Add explicit min/max constraints to all numeric parameters in descriptions. E.g., 'maxResults (1 - 50, default 10)' instead of 'Número de resultados (1-50)'.
• Implement error categorization: return {error: string, category: 'retryable'|'user_fixable'|'fatal', suggestion: string} for failures. Guide LLMs on recovery.
• Declare required scopes for each tool. E.g., get_channel_analytics requires 'read:analytics', update_video_metadata requires 'write:video'. Enable least-privilege agent configs.