This server has critical gaps in definition quality. All 4 tools have descriptions, but they are extremely brief (10-30 chars), falling well below the 50-200 char baseline for LLM-optimized descriptions. Parameter descriptions are missing entirely for most parameters: 'content' and 'metadata' in store_episode lack descriptions; 'limit' in recall_episodes lacks description; 'key' and 'value' in store_knowledge lack descriptions; 'key' in recall_knowledge lacks description. Input schemas are present but minimal, no type constraints, enums, ranges, or validation guidance. No output schemas are documented. Error handling is absent: the code raises ValueError for unknown tools but provides no recovery guidance. No tool annotations (readOnlyHint, destructiveHint, idempotentHint) are present. The memory store is in-process and non-persistent, which is not documented. Tools lack context about when to use them vs. alternatives.

• Expand tool descriptions to 50-200 chars. Example: 'store_episode' → 'Store an episodic memory with optional metadata. Use this to record events, conversations, or observations for later recall. Returns the episode ID for reference.'
• Add descriptions to every parameter. Example: 'content' → 'The episodic memory content to store (object with event details, timestamp, participants, etc.)'; 'limit' → 'Maximum number of recent episodes to recall (1-100, default 10)'.
• Document output schemas in tool definitions. Add a 'returns' field or update description to state: 'Returns {id: integer}' for store_episode, 'Returns list of episode objects' for recall_episodes, etc.
• Add input validation and error messages. Validate 'limit' is 1-100, 'key' is non-empty string, 'content' is non-null object. Return actionable errors: 'Invalid limit: got 500, must be 1-100' instead of generic ValueError.
• Add tool annotations via inputSchema or metadata. Mark store_episode and store_knowledge with destructiveHint=true; mark recall_* with readOnlyHint=true. Declare idempotency where applicable (recall_* are idempotent).