Server provides 7 well-intentioned diagnostic tools with detailed descriptions (avg 180 chars, within baseline 194). All tools are READ_ONLY and properly scoped. However, critical gaps exist: (1) Most tools have empty input schemas (analyze_memory, analyze_clients, analyze_keyspace, analyze_latency, analyze_config, analyze_replication lack parameters despite being valid candidates for filtering/options); (2) No output schemas documented, LLMs cannot predict response structure for chaining; (3) No error recovery guidance, errors are wrapped but don't guide next steps; (4) Tool descriptions lack WHEN/WHY context for selection disambiguation. Naming is strong (verb_noun pattern, clear intent). Schema completeness is the primary blocker.

• Add input schemas to all 6 tools with empty {}. Examples: analyze_memory could accept {filter: enum('fragmentation'|'eviction'|'swap'), threshold: number}; analyze_clients could accept {exclude_idle: boolean, min_buffer_size: number}. This enables parameter discovery and LLM reasoning.
• Document output schemas in tool descriptions or via a separate schema field. Example: 'Returns {memory_mb: number, fragmentation_ratio: number, recommendations: string[]}'. This lets LLMs extract specific fields and chain tools.
• Enhance error messages with actionable recovery steps. Instead of 'Error analyzing memory: Connection is closed', return 'Error analyzing memory: Connection is closed. Ensure Redis is running and REDIS_URL is set (e.g., redis://localhost:6379). Retry in 5 seconds.'
• Add WHEN/WHY context to descriptions. Example: 'Use analyze_memory to diagnose OOM evictions and memory fragmentation. Call this FIRST if the user reports slow performance or high memory usage. Use analyze_config to check if maxmemory is set; use analyze_slowlog to identify slow commands causing memory pressure.'
• Add min/max constraints to numeric parameters. Example: count parameter in analyze_slowlog should be {type: 'number', minimum: 1, maximum: 1000, default: 128, description: 'Number of slowlog entries to retrieve (1-1000, default 128)'}.