Verify a paper citation by DOI, arXiv id or title (Crossref, OpenAlex, arXiv)
Verify a paper citation by DOI, arXiv id or title (Crossref, OpenAlex, arXiv): exists? title/year/authors match? retracted?
Answeringour last check, 2026-10-10
1 of 1checks answered this week
187 msmedian answer time
$0.003listed price per call
$0.003price 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://agent-tools-7936.onrender.com/verify/citation
| Category | Everything else |
|---|---|
| Provider host | agent-tools-7936.onrender.com |
| Networks | eip155:8453, eip155:84532 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-10 | valid payment request | 402 | $0.003 | 187 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"doi": "10.1038/nature14539",
"year": "2015"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"properties": {
"arxiv": {
"type": "string"
},
"authors": {
"type": "string"
},
"doi": {
"type": "string"
},
"title": {
"type": "string"
},
"year": {
"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"
}