Paper search for AI agents

Papir is an MCP server that searches arXiv, OpenAlex, Europe PMC, Crossref and Semantic Scholar, then deduplicates and ranks the results.

Connect an MCP client

Add this endpoint:

https://papir.ereneksi.com/mcp

Your client will open this site to sign in and authorize access. Papir implements MCP OAuth 2.1, so no manual API keys are needed.

Tools

• papir_search — federated paper search
• papir_get_paper — full metadata for one paper
• papir_get_citations — citations and references
• papir_search_authors — researcher search
• papir_get_author — author profile and top works

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