Paper Search MCP

# ============================================================================== # Paper Search MCP Server - Environment Variables # ============================================================================== # Supports 13 academic platforms with unified search interface # Platforms: arXiv, Web of Science, PubMed, Google Scholar, bioRxiv, medRxiv, # Semantic Scholar, IACR ePrint, Sci-Hub, ScienceDirect, Springer, Wiley, Scopus # ============================================================================== # API KEYS CONFIGURATION # ============================================================================== # ------------------------------------------------------------------------------ # Web of Science (Clarivate) - REQUIRED # ------------------------------------------------------------------------------ # Premium citation database with high-quality journal indexing # Get API key: https://developer.clarivate.com/apis # Pricing: Paid subscription required # Rate limit: Depends on subscription level WOS_API_KEY=your_web_of_science_api_key_here WOS_API_VERSION=v1 # ------------------------------------------------------------------------------ # PubMed/NCBI E-utilities - OPTIONAL (but recommended) # ------------------------------------------------------------------------------ # Biomedical literature database # Without API key: 3 requests/second limit # With API key: 10 requests/second limit # Get API key: https://ncbiinsights.ncbi.nlm.nih.gov/2017/11/02/new-api-keys-for-the-e-utilities/ # Pricing: Free PUBMED_API_KEY=your_ncbi_api_key_here # ------------------------------------------------------------------------------ # Semantic Scholar - OPTIONAL (increases rate limits) # ------------------------------------------------------------------------------ # AI-powered academic search with semantic understanding # Without API key: ~20 requests/minute (free tier) # With API key: ~180 requests/minute (partner tier) # Get API key: https://www.semanticscholar.org/product/api # Pricing: Free for academic use SEMANTIC_SCHOLAR_API_KEY=your_semantic_scholar_api_key_here # ------------------------------------------------------------------------------ # Elsevier API - REQUIRED for ScienceDirect and Scopus # ------------------------------------------------------------------------------ # Single API key works for both platforms: # - ScienceDirect: Full-text scientific database # - Scopus: Largest abstract and citation database # Get API key: https://dev.elsevier.com/apikey/manage # Pricing: Free tier available with usage limits # Rate limit: 10 requests/second with key, 20 requests/minute without ELSEVIER_API_KEY=your_elsevier_api_key_here # ------------------------------------------------------------------------------ # Springer Nature API - REQUIRED for Springer # ------------------------------------------------------------------------------ # Dual API system: # - Metadata API v2: Search all Springer content (subscription + open access) # Endpoint: https://api.springernature.com/meta/v2/json # - OpenAccess API: Search and download open access papers only # Endpoint: https://api.springernature.com/openaccess/json # Note: OpenAccess API may require special permissions on your API key # # Get API key: https://dev.springernature.com/signup # Documentation: https://dev.springernature.com/ # Pricing: Free with 5000 requests/day limit (shared between both APIs) # Rate limit: ~200 requests/hour (conservative) # # Primary API key (required - works for Metadata API v2) SPRINGER_API_KEY=your_springer_api_key_here # # Optional: Separate OpenAccess API key (if different from main key) # Only set this if you have a separate key specifically for OpenAccess API # SPRINGER_OPENACCESS_API_KEY=your_openaccess_api_key_here # ------------------------------------------------------------------------------ # Wiley Text and Data Mining (TDM) - REQUIRED for Wiley # ------------------------------------------------------------------------------ # Access to Wiley Online Library for text and data mining # Get TDM token: https://onlinelibrary.wiley.com/library-info/resources/text-and-datamining # Pricing: Requires institutional affiliation or subscription # Rate limit: ~100 requests/hour (conservative estimate) WILEY_TDM_TOKEN=your_wiley_tdm_token_here # ============================================================================== # PLATFORM STATUS SUMMARY # ============================================================================== # # Platform | API Key | Features | Best For # ------------------|------------|-------------------------------|------------------ # arXiv | ✅ Free | Preprints, PDF download | Physics, CS, Math # Web of Science | 🔴 Required| Citation analysis, metrics | Impact research # PubMed | 🟡 Optional| Medical literature | Biomedical # Google Scholar | ✅ Free | Comprehensive coverage | General search # bioRxiv | ✅ Free | Biology preprints, PDF | Biology research # medRxiv | ✅ Free | Medical preprints, PDF | Medical research # Semantic Scholar | 🟡 Optional| AI-powered search, citations | CS, AI research # IACR ePrint | ✅ Free | Cryptography papers, PDF | Cryptography # Sci-Hub | ✅ Free | Universal DOI access | Any paper by DOI # ScienceDirect | 🔴 Required| Elsevier journals | Full-text search # Springer | 🔴 Required| Dual API (Meta+OpenAccess) | Books & journals # Wiley | 🔴 Required| TDM API, full text mining | Data mining # Scopus | 🔴 Required| Citation database | Bibliometrics # # Legend: ✅ No key needed | 🟡 Optional key | 🔴 Key required # ============================================================================== # SERVER CONFIGURATION # ============================================================================== NODE_ENV=production LOG_LEVEL=info # Download Configuration DEFAULT_DOWNLOAD_PATH=./downloads MAX_FILE_SIZE_MB=100 # Rate Limiting RATE_LIMIT_REQUESTS_PER_MINUTE=60 RATE_LIMIT_BURST=10