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Arxiv search
An MCP tool from the Public Knowledge server, hosted on mcp.hjlabs.in.
Search arXiv preprints (physics, maths, CS, stats, biology, finance...). Returns title, authors, abstract, categories, dates, PDF link and DOI. Query supports fields: "ti:transformer AND au:vaswani", "cat:cs.LG". arXiv asks clients to go slowly, so this source is limited to about 20 searches a minute service-wide.
Name on the gateway: knowledge__arxiv_search · read-only.
Parameters
| Name | Type | Description |
|---|---|---|
query required | string | Search text or arXiv query syntax. |
limit | integer | Results (default 10, max 50). |
sort | relevance | newest | last_updated | Order. Default relevance. |
How to call it
Through the Smart Gateway, any client can run it by name with call_tool, or let the gateway find it with search_tools:
{
"name": "knowledge__arxiv_search",
"arguments": {
"query": "…"
}
}Or connect the Public Knowledge server directly, which lists 47 tools including this one:
claude mcp add --transport http hj-knowledge https://mcp.hjlabs.in/mcp/knowledge \
--header "Authorization: Bearer YOUR_API_KEY"Try asking
Use the arxiv search tool with query set to ….