The memo server provides 5 tools with reasonable descriptions and input schemas. Most tools follow verb_noun naming conventions (memo_entity_search, memo_event_poll, memo_feedback_implicit). Descriptions are present but vary in quality, some are conversational and helpful (entity_search explains the 'persons, technologies, projects' boosting behavior), while others are terse (memo_version is adequate but minimal). All tools have input schemas with type definitions and descriptions, meeting baseline requirements. However, several issues limit the score: (1) Parameter descriptions could be more prescriptive about constraints and formats. For example, 'mode' in memo_entity_search lists 'hybrid, vec, or bm25' but does not explain when to use each or what they mean. (2) Output schemas are not documented in the provided source, no response structures are visible, preventing validation of whether fields support downstream tool chaining. (3) Error handling strategy is not evident from the definitions. (4) The tool set is narrow and focused on memory operations, no discovery or introspection beyond memo_version. (5) STDIO transport limits practical deployment.

• Document output schemas for all tools. For memo_entity_search, specify returned fields: e.g., {results: [{id, text, relevance_score, entities}], total_count, has_more}. For memo_event_poll, specify event structure: {event_id, event_type, data, timestamp, agent_id}.
• Convert 'mode' descriptions to formal JSON Schema enums with explanations. E.g., {type: 'string', enum: ['hybrid', 'vec', 'bm25'], description: 'hybrid = combined semantic+BM25 (default, best for mixed queries); vec = embedding-only (best for semantic similarity); bm25 = keyword-only (best for exact phrase matches)'}.
• Add validation error responses to tool descriptions. E.g., 'If source_id is not found, returns {error: "source_id not found in memory", suggestion: "Call memo_entity_search to find valid source IDs."}'. This guides LLM recovery.
• Enrich memo_event_bus_publish description with example event_type values and data structures. E.g., 'event_type examples: task_completed, memory_updated, search_result_cached. data varies by type; see documentation for each.'
• Add polling frequency guidance to memo_event_poll. E.g., 'Recommended: poll every 5 - 30 seconds. Polling faster wastes CPU; slower risks missing time-sensitive events.'
• Consider adding a memo_search_advanced tool or parameters to memo_entity_search for power users: date range filters, source type filters (web, doc, memory), relevance thresholds. Current tool is read-only but inflexible.
• Document idempotency guarantees in memo_event_bus_publish. Does re-publishing the same event_type + data = same result? Or does it create duplicate events? Specify collision semantics.