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# Research MCP - API Configuration
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# ALL API KEYS ARE OPTIONAL!
# Servers work perfectly without any keys.
# Keys only provide higher rate limits for heavy usage.
# ========================================
# Semantic Scholar API Key (OPTIONAL)
# Without key: 1-3 requests/second
# With key: 10 requests/second
# Get it from: https://www.semanticscholar.org/product/api
# SEMANTIC_SCHOLAR_API_KEY=your_semantic_scholar_api_key_here
# PubMed API Configuration (OPTIONAL)
# Without key: 3 requests/second
# With key: 10 requests/second
# Get API key from: https://www.ncbi.nlm.nih.gov/account/settings/
# PUBMED_API_KEY=your_pubmed_api_key_here
# PUBMED_EMAIL=your_email@example.com
# arXiv (NO API KEY NEEDED)
# Works perfectly as-is with 3 requests/second
# No configuration required
# Rate Limiting Configuration (advanced)
# RATE_LIMIT_REQUESTS_PER_SECOND=3