Resolve one research paper and fuse its metadata across OpenAlex, Crossref, Unpa
Resolve one research paper and fuse its metadata across OpenAlex, Crossref, Unpaywall and Semantic Scholar into a single cited JSON. Give a doi, arxiv, pmid, pmcid, openalex_id or title and get canonical metadata, authors with ORCID and affiliations, venue, citation counts, an open-access PDF link and a full id crosswalk.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
983 msmedian answer time
$0.02listed price per call
$0.02price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://api.agentstools.dev/scholar/paper
| Category | Search and research |
|---|---|
| Provider host | api.agentstools.dev |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.02 | 983 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"doi": "10.1038/nature14539"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"properties": {
"arxiv": {
"description": "arXiv id such as 2401.01234",
"type": "string"
},
"doi": {
"description": "DOI, with or without a doi.org prefix",
"type": "string"
},
"id": {
"description": "Any single identifier; its type is auto-detected",
"type": "string"
},
"openalex_id": {
"description": "OpenAlex work id such as W2741809807",
"type": "string"
},
"pmcid": {
"description": "PubMed Central id such as PMC1234567",
"type": "string"
},
"pmid": {
"description": "PubMed id (digits)",
"type": "string"
},
"title": {
"description": "Paper title to resolve by search",
"type": "string"
}
},
"required": [],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}