pub-mcp has well-structured tool definitions with consistent naming (verb_noun pattern) and complete input schemas using Zod validation. All 10 tools have descriptions and required parameters are clearly marked. However, parameter descriptions are minimal (often 1-2 sentences), output schemas are not documented, and error handling guidance is absent. The server lacks tool annotations (readOnlyHint, destructiveHint) despite all tools being read-only. No pagination guidance for search_packages despite potentially large result sets. Missing dependency hints and recovery guidance in descriptions.

• Document output schemas for all 10 tools. Example: 'Returns {packages: [{name, version, description, likes, downloads}], total_count}' for search_packages.
• Expand parameter descriptions to 50-100 chars with format/constraint hints. E.g., 'Package name (1-100 chars, lowercase with underscores)' instead of just 'Package name'.
• Add readOnlyHint: true annotation to all tool definitions in the MCP server registration to signal safe caching and retry semantics.
• Add pagination guidance to search_packages and search_similar_packages: 'Results limited to 100 items. Use limit parameter to control page size.'
• Include error recovery hints in descriptions. E.g., 'If package not found, try search_packages() to verify the exact name.'

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

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