This MCP server has 14 tools with basic schemas and descriptions, but significant quality gaps. Tool names follow verb_noun convention (good), but descriptions are inconsistent, some are terse (whoami: 20 chars), others lack actionable context. Parameter descriptions exist but are minimal (avg ~30 chars). No output schemas documented. Error handling is absent, no recovery guidance, no categorization of retryable vs fatal errors. No tool annotations (readOnlyHint/destructiveHint). Critical issue: descriptions are in Chinese, which LLMs may struggle with for tool selection reasoning. Schemas lack enums for constrained inputs (e.g., sort parameter in search_merchants accepts 'comprehensive' but no enum declared). No pagination support visible despite tools returning lists. Overall, definitions are skeletal, functional but not LLM-optimized.

• Translate all descriptions to English (or provide English alongside Chinese). Expand descriptions to 50 - 200 chars per tool, explaining WHAT it does, WHEN to use it, and any prerequisites. Example: 'whoami' → 'Get the current user's identity, permissions, and token expiration. Call this first to verify authentication and determine what actions are available.'
• Document output schemas for all 14 tools. Specify returned fields, types, and which IDs/references are needed for downstream tool calls. Example: search_merchants should return [{ merchant_id, name, location, rating, distance }] so agents can pass merchant_id to get_menu.
• Add error handling guidance to tool descriptions. Example: 'If merchant not found, try search_merchants() with a partial name.' Categorize errors as retryable (network timeout) vs user-fixable (invalid merchant_id) vs fatal (permission denied).
• Add tool annotations: mark all READ_ONLY tools with readOnlyHint=true; mark WRITE tools (create_pending_order, publish_video, create_miniapp, etc.) with destructiveHint=true. Mark idempotent operations (e.g., get_order_status) with idempotentHint=true.
• Convert free-form string parameters to enums where values are constrained. Example: search_merchants 'sort' → enum ['comprehensive', 'distance', 'rating']; create_miniapp 'kind' → enum ['game', 'app']. Enums are self-documenting and prevent hallucinated values.