Search arXiv papers by keyword, author, category, or ID.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# arXiv Research
Search and retrieve academic papers from arXiv via their free REST API. No API key, no dependencies — just curl.
## Quick Reference
| Action | Command |
|--------|---------|
| Search papers | `curl "https://export.arxiv.org/api/query?search_query=all:QUERY&max_results=5"` |
| Get specific paper | `curl "https://export.arxiv.org/api/query?id_list=2402.03300"` |
| Read abstract (web) | `web_extract(urls=["https://arxiv.org/abs/2402.03300"])` |
| Read full paper (PDF) | `web_extract(urls=["https://arxiv.org/pdf/2402.03300"])` |
## Searching Papers
The API returns Atom XML. Parse with `grep`/`sed` or pipe through `python3` for clean output.
### Basic search
```bash
curl -s "https://export.arxiv.org/api/query?search_query=all:GRPO+reinforcement+learning&max_results=5"
```
### Clean output (parse XML to readable format)
```bash
curl -s "https://export.arxiv.org/api/query?search_query=all:GRPO+reinforcement+learning&max_results=5&sortBy=submittedDate&sortOrder=descending" | python3 -c "
import sys, xml.etree.ElementTree as ET
ns = {'a': 'http://www.w3.org/2005/Atom'}
root = ET.parse(sys.stdin).getroot()
for i, entry in enumerate(root.findall('a:entry', ns)):
…
The line at the top of this page pins the label v1.0.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
GET https://markdownregistry.com/api/v1/artifacts/art_cce2g27xinh77agc
GET https://markdownregistry.com/api/v1/resolve?ref=mateaix/mateclaw/arxiv
GET https://markdownregistry.com/api/v1/blob/ec16f9d0b745a1f45b3af370429383fca3c31fa76a7882776f66ac9d5589dbf0
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