Endpoint Playground
Return paper records including titles, abstracts when available, authors, publication dates and verified identifier aliases. Europe PMC resolution is limited to MED-backed PMID, PMCID and DOI records; no full-text body is fetched.
14 Oct 2026: 4 paper.authors; 1 fields had a value in every checked item.
Sample value profiles: name: “Tenaillon O” and 3 other values.
curl 'https://api.crawlora.net/api/v1/research/papers/metadata?paper_id=17299597' \
-H "x-api-key: $CRAWLORA_API_KEY"| Parameter | Type | Required | Prefilled value | Description |
|---|---|---|---|---|
| paper_id | string | Yes | 17299597 | arXiv identifier, PMID, PMCID, DOI, Europe PMC primary ID or canonical paper ID |
{
"code": 200,
"msg": "OK",
"data": {
"paper": {
"paper_id": "paper:arxiv:1706.03762",
"primary_id": "arxiv:1706.03762",
"identifiers": [
{
"namespace": "arxiv",
"value": "1706.03762"
}
],
"title": "Attention Is All You Need",
"abstract": "The dominant sequence transduction models are based on complex recurrent or convolutional neural networks...",
"authors": [
{
"name": "Ashish Vaswani"
}
],
"content_level": "abstract",
"source_urls": [
"https://arxiv.org/abs/1706.03762"
],
"retrieved_at": "2026-10-09T04:00:00Z"
},
"coverage": [
{
"source_id": "arxiv",
"status": "ok"
}
],
"warnings": [],
"usage": {
"search_requests": 0,
"fetch_attempts": 1,
"fetched_urls": 1,
"browser_renders": 0,
"input_tokens": 0,
"output_tokens": 0,
"credits_reserved": 0,
"credits_charged": 1,
"credits_released": 0,
"settlement_pending": false
}
}
}The sample response, schema and code snippets below work without an account. Sending a live request needs an API key.