Mnemo MCP Server demonstrates solid definition quality across 9 well-named semantic memory tools. All tools have descriptions (ranging 40-90 chars, within baseline of 34-392), explicitly defined JSON schemas with zod validation, and clear input parameters with types and descriptions. Naming is consistent (verb_noun: recall, remember, forget, list, stats, suggest, run, context, depends_on) and self-documenting. However, there are notable gaps: (1) Output schemas are not documented, the code shows tool implementations but no explicit output type declarations visible in the server registration; (2) Error handling strategies are not visible, no recovery guidance, categorization, or actionable error messages in the source; (3) No pagination parameters despite tools like mnemo_list and mnemo_recall returning multiple results; (4) Parameter interdependencies underdocumented (e.g., project_hash behavior when scope varies); (5) No dry-run or confirmation pattern for the destructive mnemo_forget tool. The server follows good naming convention (all action verbs) and parameter typing is comprehensive, placing it solidly in the B - C range rather than A.

• Document output schemas for all tools. Define response object structure (e.g., mnemo_recall returns [{id, content, score, similarity, tags, agent}]; mnemo_stats returns {total_memories, total_entities, db_size_bytes}). Make this explicit in tool registration.
• Add a mnemo_forget_confirm tool or implement confirmation-request pattern: first call returns what will be deleted, user/agent confirms, second call executes. Prevents accidental memory loss.
• Add pagination to mnemo_recall and mnemo_list: include offset/cursor/limit params, return total_count and next_cursor in responses. Document result cap (e.g., 'max 50 results per call') in descriptions.
• Clarify parameter relationships in descriptions: 'project_hash is ignored if scope=global or scope=all; defaults to hash of cwd if scope=project and project_hash not provided.' Document agent parameter constraints (e.g., 'agent filters to memories captured by named agent; omit to include all agents').
• Expand mnemo_stats, mnemo_entity_context, mnemo_what_depends_on descriptions to 100+ chars explaining use cases: 'mnemo_entity_context retrieves all memories and related entities for a named service/module. Use before making changes to understand dependencies.' 'mnemo_what_depends_on shows which entities transitively depend on this entity via use/require relationships. Call to assess blast radius before refactoring.'
• Add error recovery guidance in tool descriptions. E.g., mnemo_forget: 'If memory not found, error will suggest similar IDs via substring match.' mnemo_recall: 'No results? Try expanding min_score, broadening scope, or using wildcard terms like "bug" vs "TypeError in parseConfig".'