B12 demonstrates solid naming conventions (verb_noun pattern: memory_search, memory_store, memory_delete) and comprehensive parameter descriptions. However, output schemas are not documented in the provided source, and several tools lack clarity on return structures. Tool descriptions are adequate (100-200 chars) but could better explain WHEN to use each tool vs. alternatives. Error handling guidance is absent, tools do not indicate what to do on failure. Security considerations around LLM provider credentials are not visible in the MCP server code.

• Document output schemas for all tools. For memory_search, specify: returns array of {content_hash, content, tags, memory_type, quality_score, ebbinghaus_score, created_at}. For memory_store, specify: returns {content_hash, content, tags, memory_type, metadata, created_at}. This enables LLMs to chain tools correctly.
• Add error handling guidance to tool descriptions. E.g., memory_consolidate: 'Requires B12_LLM_PROVIDER env var. If missing, returns error with setup instructions. If no memories match query, returns empty array (not an error).'
• Clarify memory_consolidate vs. memory_refine. Consolidate: 'Merges similar memories into one summary using LLM extraction.' Refine: 'Scores and deduplicates a candidate list without merging.' This removes ambiguity.
• Add explicit limit and pagination to memory_search description: 'Returns up to {limit} results (default 10, max 100). Use offset parameter for pagination.' Validate limit server-side to prevent abuse.
• Document memory_dashboard output: 'Returns {total_memories, tag_distribution, recent_activity_count, graph_stats}. Use this to show user a memory overview before session start.'