Academic paper search and retrieval via arXiv, Semantic Scholar, PubMed, Unpaywall.
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io.github.penny4nonsense/mcp-scholaris is an MCP server that academic paper search and retrieval via arXiv, Semantic Scholar, PubMed, Unpaywall. Its tool list has not been published yet over stdio, requires no API key, and scores 82/100 on MCPpedia's security, maintenance and efficiency rubric.
Config is the same across clients — only the file and path differ.
{
"mcpServers": {
"scholaris": {
"command": "scholaris"
}
}
}Are you the author?
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An MCP server for retrieving academic papers from open access sources. Provides search across arXiv, Semantic Scholar, and PubMed, with full text retrieval via arXiv PDFs, PubMed Central (BioC API), and Unpaywall. No paywalls, no grey area — legitimate open access only.
Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.
uvx 'mcp-scholaris' 2>&1 | head -1 && echo "✓ Server started successfully"
After testing, let us know if it worked:
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No known CVEs.
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An MCP server for retrieving academic papers from open access sources. Provides search across arXiv, Semantic Scholar, and PubMed, with full text retrieval via arXiv PDFs, PubMed Central (BioC API), and Unpaywall. No paywalls, no grey area — legitimate open access only.
pip install mcp-scholaris
search_papersSearch for academic papers by topic, author, or keyword.
Parameters:
query (required) — search termssources (optional) — list of sources to search: arxiv, semantic_scholar, pubmed. Defaults to all three.max_results (optional) — maximum results per source. Defaults to 5.fetch_paperFetch the full text of a paper. Tries open access sources in order: arXiv → PubMed Central → Unpaywall. Provide at least one identifier.
Parameters:
arxiv_id — e.g. 2301.00001 or arxiv:2301.00001pubmed_id — PubMed ID (PMID), e.g. 36383508doi — e.g. 10.1371/journal.pone.0276755Semantic Scholar works without an API key but is rate-limited. For higher limits, create a .env file in your working directory:
SEMANTIC_SCHOLAR_API_KEY=your_key_here
API keys are free at semanticscholar.org.
Add to your MCP client configuration:
{
"mcpServers": {
"scholaris": {
"command": "scholaris"
}
}
}
Or run directly:
scholaris
The server communicates over stdio using the MCP protocol (JSON-RPC 2.0).
| Source | Search | Full Text |
|---|---|---|
| arXiv | ✓ | |
| Semantic Scholar | ✓ | ✓ when OA PDF available |
| PubMed | ✓ | ✓ via BioC API (PMC articles) |
| Unpaywall | — | ✓ for any DOI with OA version |
MIT