Server defines 6 tools with explicit schemas and descriptions. Naming follows verb_noun convention (music_get_state, music_playback, music_search, music_playlists, music_preferences, music_library). Descriptions are present and moderately detailed (avg ~150 chars). Input schemas are well-structured with enums and type constraints. However, output schemas are NOT documented, LLMs cannot predict response structure. Parameter descriptions are adequate but lack dependency hints and format guidance. No error handling guidance visible in tool definitions. Tool annotations (readOnlyHint, destructiveHint, idempotentHint) are present, which is good. Missing: pagination guidance, response field documentation, recovery hints for failures.

• Document output schemas for all 6 tools. Include field names, types, and examples. E.g., music_get_state returns {track: {name, artist, id}, state: 'playing'|'paused', volume: 0-100, ...}.
• Add recovery hints to tool descriptions. E.g., music_playback: 'If track not found, call music_search() first to get a valid track ID.'
• Clarify pagination for music_search and music_library. State: 'Results capped at limit (default 25, max 200). Use offset/limit to fetch more.' Document the response structure (total_count, items, next_offset).
• Enhance parameter descriptions with format and dependency info. E.g., target_id: 'Persistent ID of the track (obtain via music_search). Format: alphanumeric string, 16-32 chars.'
• Add examples to enum parameters. E.g., music_library action: 'Use search for keyword lookup (e.g., action=search, query="Beatles"), recently_added to see new tracks, list_tracks to browse all.'

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

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