Checks up to 5 references against public registries
Checks up to 5 references against public registries: DOI through Crossref, arXiv ids through the arXiv API, ISBN-10/13 through Open Library (checksum first). Returns title, year, venue and a BibTeX entry plus an APA-style string for each verified one; unknown ones come back as not_found. Authors are given for DOI and arXiv only.
Answeringour last check, 2026-10-24
1 of 1checks answered this week
37 msmedian answer time
$0.001listed price per call
$0.001price 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
POST https://api.fadeandco.workers.dev/api/agent-intel/citation-verifier
| Category | Everything else |
|---|---|
| Provider host | api.fadeandco.workers.dev |
| Networks | eip155:10, eip155:137, eip155:143, eip155:42161, eip155:42220, eip155:480, eip155:5042, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp, stellar:pubnet, xrpl:0 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-24 | valid payment request | 402 | $0.001 | 37 ms |
Example input (from the provider)
{
"body": {
"references": [
"10.1038/nature14539",
"arXiv:1706.03762",
"978-0-14-032872-1"
]
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"references": {
"description": "1 to 5 DOIs, arXiv ids (arXiv:1706.03762) or ISBNs",
"items": {
"type": "string"
},
"type": "array"
}
},
"required": [
"references"
]
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}