The server defines 3 tools with basic but incomplete quality. All tools have names following verb_noun conventions (search_videos, get_user_info, get_video_info) and descriptions present. However, parameter descriptions are sparse, most lack context about what values are valid or how they're used. Schema definitions exist and are properly typed, but output schemas are not documented anywhere in the visible code. Error handling is minimal; the common api.ts file throws generic errors without recovery guidance. The tool definitions are visible and explicit (not inferred), but lack the polish expected for production use. Naming is clear and appropriate for the domain.

• Document the output schema for each tool in the tool description or in a separate RESPONSES.md file. Example: 'Returns: {bvid, title, author_name, author_id, views, likes, duration_seconds, publish_date, tags}'. This enables agents to plan multi-step compositions.
• Expand parameter descriptions to include format constraints and typical values. Example: 'keyword (string): Search term for videos (1-100 characters, supports Chinese and English, special chars like *&? are stripped)'. Reference Bilibili API docs.
• Implement structured error handling in apiRequest(). Categorize errors as retryable (rate limit, timeout), user-fixable (invalid parameters), or fatal (network unreachable). Return actionable messages: 'Invalid BVID format: expected 12-character string like BV1xx411c7mD, try search_videos() first if you only have a username.'
• Add tool descriptions explaining when to call each tool. Example for get_user_info: 'Use this to fetch a user\'s profile, follower count, and VIP status. If you only have a username, call search_users() first (currently not available; consider adding it).'
• Define and document the types returned by userAPI.getInfo(), videoAPI.getDetail(), and searchAPI.searchVideos(). Create a types.md or RESPONSES.md documenting each field (e.g., 'aid: number, the legacy video ID; recommend using bvid instead').
• Add validation to parameter inputs. For search_videos, reject keyword strings > 100 chars or page > 100 with a clear error. For get_user_info and get_video_info, validate mid/bvid format before calling the API.

Inferred effective spec: <=2025-11-25.

• Relies on Stateful initialize / Mcp-Session-Id (removed; protocol is stateless) - make each request self-contained