The server defines 11 tools with reasonable coverage for Zenodo record discovery and analysis. Tool names follow verb_noun conventions (search_records, get_metadata, download_file, etc.), which is good. However, significant quality gaps exist: (1) Parameter descriptions are sparse or missing entirely for many tools, e.g., sort parameter in search_records lacks enum values or constraints; (2) Output schemas are not documented in the tool definitions, forcing LLMs to infer result structure; (3) Error handling is minimal, no guidance on retryability, user-fixable errors, or recovery paths; (4) Some parameter relationships are undocumented (e.g., include_files and include_versions in get_metadata have no explanation of what they control in the response); (5) Descriptions are brief but generally adequate (60-80 chars on average), meeting the 10-1024 character rule but not optimized for LLM decision-making. The citation_tool.py shows reasonable implementation (extracts creators, pub_date, formats BibTeX/APA), but the compare_tool.py exposes a pattern anti-pattern: it accepts a generic 'compare_fields' array without enumerating valid field names, inviting hallucinated field names like 'invented_field'. Overall, the tools are well-intentioned but lack polish in parameter validation, schema documentation, and error guidance.

• Add JSON Schema output documentation for every tool. Document the structure of each response (e.g., search_records returns {items: [{record_id, title, url, creators, date}], total: int, next_cursor?: string}).
• Convert informal parameter descriptions like '(bestmatch, mostrecent)' to formal JSON Schema enums. For sort in search_records: {"enum": ["bestmatch", "mostrecent"]}. For format in get_citation: {"enum": ["bibtex", "apa"]}. For compare_fields in compare_records, enumerate valid field names.
• Add min/max constraints to numeric parameters. E.g., max_results: {"type": "integer", "minimum": 1, "maximum": 100}, max_length: {"type": "integer", "minimum": 10, "maximum": 5000}, similarity_threshold: {"type": "number", "minimum": 0.0, "maximum": 1.0}.
• Enrich descriptions with error recovery hints. E.g., get_citation: 'If format is unsupported, returns an error with valid options.' download_file: 'Returns 404 if file_name does not exist in record; call list_files() first to discover available filenames.'
• Document parameter relationships. In get_metadata, clarify: 'When include_files=true, response includes file array with size, format, download_url. When include_versions=true, response includes version history.' In compare_records, document: 'record_ids must have at least 2 items. compare_fields defaults to [title, authors, topics, publication_date] and may be extended with custom field names, invalid fields are silently ignored.'
• Add pagination to search_records and list_files. Include limit (default 20, max 100), offset, and total_count in responses. State limits in descriptions: 'Returns up to 50 results; use offset parameter to paginate.'