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io.github.SMABoundless/crossref

Official

by SMABoundless · Python

Search and retrieve scholarly metadata from the Crossref REST API

A Model Context Protocol (MCP) server that searches and retrieves scholarly metadata from the Crossref REST API. It exposes tools to query Crossref records, supports keyword and title-based searches, and returns metadata in MCP-compatible context formats. Built with FastMCP; no API key required. 150M+ records across publishers and disciplines.

🛠️ Key Features

  • Tools: crossref_search, crossref_title_search, crossref_author_search
  • Keyword search with filters (year, type, sort)
  • Title-focused search for precise matching
  • Metadata retrieval from the Crossref REST API
  • No API key required

🚀 Use Cases

  • Retrieve scholarly metadata for literature reviews
  • Find works by keyword, title, or author
  • Filter results by year and type for targeted research
  • Integrate Crossref data into MCP-enabled workflows

⚡ Developer Benefits

  • FastMCP-based server with accessible tools
  • Clear tool separation for extensibility
  • Large, diverse dataset (150M+ records)
  • Straightforward integration without API keys

⚠️ Limitations

  • Dependent on Crossref REST API availability
  • Metadata quality limited by Crossref records
  • Tool behavior constrained by Crossref query capabilities

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io.github.SMABoundless/crossref - agentage MCP Catalog