Citation and Retraction Check
Verify references before you publish or rely on them: up to 10 citations per call, as reference strings in any style, DOIs, or {title, authors, year, doi}. For each: status verified, mismatch (the work exists but authors, year or DOI are wrong, e.g. a real DOI that points to a different paper), uncertain or not_found (likely invented), the matched record with authors, year, venue, DOI and open-access link, the corrected issues, an APA-formatted reference, and a retraction flag with the notice…
Offering
- Provider
- agentsvc.io
- Method
- POST
- Offering type
- Api Endpoint
- Transport type
- http
- Category
- Science And Education
- Delivery
- Not provided
- Pricing model
- Not provided
- x402 version
- 2
Endpoint context
- URL
https://agentsvc.io/api/v1/proxy/citation-check- MIME type
- application/json
- First seen
- 2026-10-16T01:50:45.949Z
- Last seen
- Tags
- citation-verification, hallucination-check, retraction-check, reference-check, doi-lookup
Payment pricing
x402 payment terms are the authoritative price for calling this endpoint.
- Payment option 1
- 0.005 USDC
Atomic price: 5000 · Network: eip155:8453 · Asset: USDC · Scheme: exact - Payment option 2
- 0.005 USDC
Atomic price: 5000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact - Payment option 3
- 0.005 USDC
Atomic price: 5000 · Network: eip155:137 · Asset: USDC · Scheme: exact - Payment option 4
- 0.005 USDC
Atomic price: 5000 · Network: eip155:42161 · Asset: USDC · Scheme: exact
Raw x402 terms
[
{
"scheme": "exact",
"network": "eip155:8453",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "5000",
"payTo": "0x622efA6Ceb83a5b6EdBC931332f4db68B7f74F27"
},
{
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"amount": "5000",
"payTo": "5JzPS5qpEwUM1vTC9GG7uqvwJdHzbEwfoPHf2Ki977tg"
},
{
"scheme": "exact",
"network": "eip155:137",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"amount": "5000",
"payTo": "0x622efA6Ceb83a5b6EdBC931332f4db68B7f74F27"
},
{
"scheme": "exact",
"network": "eip155:42161",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"amount": "5000",
"payTo": "0x622efA6Ceb83a5b6EdBC931332f4db68B7f74F27"
}
]Observed health
- Status
- Healthy
- Latest latency
- 310 ms
- Average latency
- 892 ms
- HTTP status
- 204
- Last checked
- Reachability
- 100% over 13 checks
Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.
Input schema
{
"type": "object",
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"type": "string",
"enum": [
"POST",
"PUT",
"PATCH"
]
},
"bodyType": {
"type": "string",
"enum": [
"json",
"form-data",
"text"
]
},
"body": {
"properties": {
"citations": {
"description": "1 to 10 references: strings, or {title, authors, year, doi}; or one string with one reference per line",
"anyOf": [
{
"type": "array",
"minItems": 1,
"maxItems": 10,
"items": {
"anyOf": [
{
"type": "string",
"maxLength": 1000
},
{
"type": "object",
"properties": {
"title": {
"type": "string"
},
"authors": {
"type": "array",
"items": {
"type": "string"
}
},
"year": {
"type": "integer"
},
"doi": {
"type": "string"
},
"venue": {
"type": "string"
}
}
}
]
}
},
{
"type": "string",
"maxLength": 10000
}
]
},
"doi": {
"type": "string",
"description": "Single DOI (alternative to citations)"
},
"title": {
"type": "string",
"description": "Single title (alternative to citations), optionally with authors and year"
},
"authors": {
"type": "array",
"items": {
"type": "string"
}
},
"year": {
"type": "integer"
}
},
"required": []
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"additionalProperties": false
}Output schema
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"authors": {
"items": {
"type": "string"
},
"type": "array"
},
"citations": {
"anyOf": [
{
"items": {
"anyOf": [
{
"maxLength": 1000,
"type": "string"
},
{
"properties": {
"authors": {
"items": {
"type": "string"
},
"type": "array"
},
"doi": {
"type": "string"
},
"title": {
"type": "string"
},
"venue": {
"type": "string"
},
"year": {
"type": "integer"
}
},
"type": "object"
}
]
},
"maxItems": 10,
"minItems": 1,
"type": "array"
},
{
"maxLength": 10000,
"type": "string"
}
],
"description": "1 to 10 references: strings, or {title, authors, year, doi}; or one string with one reference per line"
},
"doi": {
"description": "Single DOI (alternative to citations)",
"type": "string"
},
"title": {
"description": "Single title (alternative to citations), optionally with authors and year",
"type": "string"
},
"year": {
"type": "integer"
}
},
"required": []
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"data": {
"properties": {
"checked_at": {
"type": "string"
},
"citations": {
"type": "array"
},
"sources": {
"type": "string"
},
"summary": {
"type": "object"
}
},
"type": "object"
},
"success": {
"type": "boolean"
}
},
"required": [
"success",
"data"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}