Server has 7 tools with basic schemas and descriptions, but significant gaps limit production readiness. All tools have descriptions (10-100+ chars) and input schemas with type definitions, but descriptions are often generic and lack actionable guidance. Parameter descriptions are present but minimal. No output schemas documented. Error handling is minimal, most tools return generic success/failure dicts without recovery guidance. Tool naming follows verb_noun convention (bilibili_help, bilibili_search) but lacks clarity on operation types (e.g., 'operation' param accepts free-form strings like 'trending', 'rank', 'hot_search' without enum constraints). Security concern: bilibili_account requires BILIBILI_COOKIE but no documentation on secret injection or credential handling. Composition is reasonable, tools are single-purpose, but chaining is weak (e.g., search returns results but unclear if IDs are usable by downstream tools).

• Convert all 'operation' parameters to enums. E.g., bilibili_explore: operation enum ['trending', 'rank', 'hot_search']. This prevents hallucinated values and makes tools self-documenting.
• Document output schemas for all tools. Specify the structure of the 'data' field returned by each tool. E.g., bilibili_search returns {videos: [{bvid, title, author, views}], users: [{uid, name, followers}]}. Include this in docstrings or a schema registry.
• Add range constraints to numeric parameters. E.g., 'limit' should be 'Maximum number of results (1-50, default 20)'. 'rid' should document valid category IDs or link to a discovery tool.
• Enhance error messages with recovery guidance. E.g., instead of {'success': False, 'message': 'Invalid operation'}, return {'success': False, 'message': 'Invalid operation: got "trending_hot". Valid values: trending, rank, hot_search. Call bilibili_help() for details.'}
• Document credential handling for bilibili_account. Specify that BILIBILI_COOKIE is injected server-side via environment variable, not passed as a parameter. Add permission scope documentation (e.g., 'requires account:read scope').

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

• Relies on Logging (deprecated) - log to stderr or use OpenTelemetry