AI Agents
arxiv-mcp-server
A local MCP server for serious arXiv work — LaTeX section reads, BibTeX and topic watches.
★ 3.2k starsApache-2.0
View guide →MCP server, CLI and skills for searching and downloading academic papers from arXiv, PubMed and 20+ sources
paper-search-mcp is an open-source ai agents project by openags (openags/paper-search-mcp on GitHub). It has 2,766 GitHub stars and 288 forks, is released under the MIT license, and was last updated on GitHub on 2 October 2026.
Decide which sources matter for your field (e.g. arXiv for CS, PubMed/Europe PMC for biomedicine) and whether you need search only or PDF download and text extraction too.
Install via uvx/pip/Smithery or clone and run from source.
Add it to your MCP client; optionally set free API keys (Semantic Scholar, CORE, OpenAlex) and the required Unpaywall email in ~/.config/paper-search-mcp/.env.
Ask your client to search_papers for a topic, review the deduplicated results, and download an open-access PDF with the fallback downloader.
Unified search across arXiv, PubMed, bioRxiv, medRxiv, Semantic Scholar, Crossref, OpenAlex, PMC, CORE, Europe PMC, dblp, OpenAIRE, DOAJ, Zenodo, HAL, SSRN, OpenReview, IACR and more.
The high-level search_papers tool runs multi-source concurrent search and deduplicates into a standardized Paper format.
download_with_fallback tries source-native links, then OpenAIRE/CORE/Europe PMC/PMC discovery, then Unpaywall DOI resolution (an optional Sci-Hub step is user-enabled and the user's responsibility).
Works without keys wherever possible; free keys for some sources raise rate limits, and the README documents each source's real capability matrix from live tests.
CLI -s fast / -s fastest modes trade coverage for latency using the quickest sources.
stdio by default, plus SSE and Streamable HTTP bound to localhost, with optional OAuth protected-resource mode for remote deployments.
Clone Paper Search MCP if running from source; most users install it as an MCP server in step 2.
git clone https://github.com/openags/paper-search-mcp.git
cd paper-search-mcpInstall it with the method the README lists for your client (uvx, pip, Smithery, npx or Docker).
# see README for the exact command — install methods include uvx / pip / SmitheryConfigure your client to launch the server (stdio by default), restart the client, and ask it to search for papers.
# see README for the exact command — client config examples are in the Installation sectionopenags maintains it on GitHub.
Yes, MIT-licensed, and deliberately free-first: sources are public/open by default. Some optional free API keys improve rate limits.
No paid key is required. Unpaywall needs just an email set in the env; a few sources (like IEEE) need their own key only if you enable them.
Scholar is one source with bot-detection limits (documented in the README). This server standardizes and deduplicates results across 20+ sources and can download open-access full text.
Install via uvx or Smithery, add it to your MCP client config, restart the client, and ask for a search_papers query.
A local MCP server for serious arXiv work — LaTeX section reads, BibTeX and topic watches.
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