Three tools with basic schemas and minimal descriptions. send_message and submit_product lack detail on side effects and prerequisites. read_history has no guidance on output format or pagination. No parameter validation hints, no error recovery guidance, and descriptions are generic (10-50 chars, well below the 194-char baseline). Tool names are verb-noun compliant but descriptions do not explain WHEN to use each tool or WHAT happens. No mention of idempotency, retryability, or state changes. Schemas present but sparse, no output schemas documented, no pagination support, no field descriptions beyond parameter names.

• Expand tool descriptions to 100 - 200 chars. For send_message: 'Send an asynchronous message to a teammate by name. Returns message_id and timestamp. Fails if recipient is offline or does not exist, use list_agents() to discover valid names.'
• Document output schemas for all three tools. E.g., send_message returns {message_id: string, timestamp: ISO8601, status: 'sent'|'queued'|'failed'}.
• Add pagination to read_history: accept limit (1 - 1000, default 50) and cursor parameters. Return {messages: [...], next_cursor: string|null, total_count: int}.
• Add error handling hints to descriptions. E.g., 'If recipient not found, call list_agents() to see available teammates. If send fails, retry up to 3 times, the operation is idempotent.'
• Clarify parameter constraints: recipient must be an exact agent name (case-sensitive); content must be non-empty string (max 10000 chars). Add examples in parameter descriptions, not tool descriptions.