MnemOS defines 4 tools with explicit schemas and descriptions. All tools have input schemas with type definitions and required fields. Descriptions are present (avg 140 chars) and action-oriented. However, several parameters lack descriptions (e.g., list_memories.limit has no description), and output schemas are not documented. Error handling returns generic text responses without recovery guidance. Tool naming follows verb_noun convention (remember, recall, forget, list_memories) but 'forget' is less conventional than 'delete_memory'. No tool annotations (readOnlyHint, destructiveHint) despite clear risk profiles (WRITE, DESTRUCTIVE, READ_ONLY).

• Add descriptions to all parameters. Example: list_memories.limit → 'Maximum number of memories to return (1-100, default 20)'. Every param needs a description per pattern:tool-description.
• Document output schemas for each tool. Define structured return types (e.g., recall returns {memories: [{id, content, type, relevance}], total_count}). Use pattern:response-shaper to guide LLM parsing.
• Enhance error handling with recovery guidance. Instead of 'Error saving memory: Connection timeout', return 'Failed to save memory (connection timeout). Verify MNEMOS_URL is reachable. Retry in 5 seconds.' per pattern:recovery-guide.
• Rename 'forget' to 'delete_memory' for clarity and consistency with verb_noun baseline. This aligns with 90% of A+ tools and makes intent unambiguous.
• Add tool annotations to types.Tool definitions. Set readOnlyHint=true for recall/list_memories, destructiveHint=true for forget, and idempotentHint=true for remember (if idempotent by design).