Two tools with complete schemas and reasonable descriptions. Naming follows verb_noun convention (get_current_time, convert_time). Descriptions are adequate (50-80 chars) but lack actionable context for LLM selection. Parameter descriptions are present but generic, no format constraints, ranges, or error recovery guidance. Output schemas are not documented. Error handling exists but lacks recovery hints. No tool annotations (readOnlyHint). Composition is sound: each tool has one responsibility. Baseline: avg tool description 194 chars (these are 50-80), avg params 4 (these have 3-4), 100% of A+ tools document output (these don't).

• Document output schemas in tool definitions. Add a 'returns' field or inline schema showing {timezone: string, datetime: string (ISO 8601), is_dst: boolean} for get_current_time and {source: {timezone, datetime, is_dst}, target: {timezone, datetime, is_dst}, time_difference: string} for convert_time.
• Expand tool descriptions to 100 - 200 chars. Example: 'Get the current time in a specified IANA timezone. Returns ISO 8601 datetime and DST status. Use this to answer "What time is it in Tokyo?" or "Is it daylight saving time in London?"'
• Add format constraints to parameter descriptions. Example: 'timezone: IANA timezone name (e.g., America/New_York, Europe/London, Asia/Tokyo). Invalid timezones raise an error, use a timezone lookup tool if unsure.' and 'time: Time in 24-hour format HH:MM (e.g., 14:30). Invalid formats raise an error.'
• Add readOnlyHint: true to both tools in the schema to signal they are safe to call without side effects.
• Document error cases in descriptions. Example: 'Raises McpError if timezone is invalid (e.g., "America/New_Yark"). Raises ValueError if time format is not HH:MM.'