Paper Search MCP

# paper_search_mcp/paper.py from dataclasses import dataclass from datetime import datetime from typing import List, Dict, Optional @dataclass class Paper: """Standardized paper format with core fields for academic sources""" # 核心字段（必填，但允许空值或默认值） paper_id: str # Unique identifier (e.g., arXiv ID, PMID, DOI) title: str # Paper title authors: List[str] # List of author names abstract: str # Abstract text doi: str # Digital Object Identifier published_date: datetime # Publication date pdf_url: str # Direct PDF link url: str # URL to paper page source: str # Source platform (e.g., 'arxiv', 'pubmed') # 可选字段 updated_date: Optional[datetime] = None # Last updated date categories: List[str] = None # Subject categories keywords: List[str] = None # Keywords citations: int = 0 # Citation count references: Optional[List[str]] = None # List of reference IDs/DOIs extra: Optional[Dict] = None # Source-specific extra metadata def __post_init__(self): """Post-initialization to handle default values""" if self.authors is None: self.authors = [] if self.categories is None: self.categories = [] if self.keywords is None: self.keywords = [] if self.references is None: self.references = [] if self.extra is None: self.extra = {} def to_dict(self) -> Dict: """Convert paper to dictionary format for serialization""" return { 'paper_id': self.paper_id, 'title': self.title, 'authors': '; '.join(self.authors) if self.authors else '', 'abstract': self.abstract, 'doi': self.doi, 'published_date': self.published_date.isoformat() if self.published_date else '', 'pdf_url': self.pdf_url, 'url': self.url, 'source': self.source, 'updated_date': self.updated_date.isoformat() if self.updated_date else '', 'categories': '; '.join(self.categories) if self.categories else '', 'keywords': '; '.join(self.keywords) if self.keywords else '', 'citations': self.citations, 'references': '; '.join(self.references) if self.references else '', 'extra': str(self.extra) if self.extra else '' }