Compare one supplied DOI across Crossref and DataCite and return bounded, attrib
Compare one supplied DOI across Crossref and DataCite and return bounded, attributed open-metadata agreement evidence.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
96 msmedian answer time
$0.012listed price per call
$0.012price 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://foundry-open-scholarly-evidence-mainnet.inference-chip-index.workers.dev/v1/scholarly/evidence
| Category | Everything else |
|---|---|
| Provider host | foundry-open-scholarly-evidence-mainnet.inference-chip-index.workers.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 | $0.012 | 96 ms |
Example input (from the provider)
{
"body": {
"doi": "10.5555/example"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"doi": {
"maxLength": 512,
"minLength": 6,
"type": "string"
}
},
"required": [
"doi"
],
"type": "object"
},
"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": {
"additionalProperties": false,
"properties": {
"caveats": {
"items": {
"type": "string"
},
"type": "array"
},
"disposition": {
"enum": [
"CONFIRMED",
"PARTIAL",
"CONFLICT",
"UNAVAILABLE"
],
"type": "string"
},
"evidenceFingerprint": {
"pattern": "^[0-9a-f]{64}$",
"type": "string"
},
"matches": {
"additionalProperties": false,
"properties": {
"doi": {
"type": [
"boolean",
"null"
]
},
"title": {
"type": [
"boolean",
"null"
]
},
"year": {
"type": [
"boolean",
"null"
]
}
},
"required": [
"doi",
"title",
"year"
],
"type": "object"
},
"product": {
"const": "open-scholarly-evidence",
"type": "string"
},
"queriedDoi": {
"type": "string"
},
"sources": {
"items": {
"additionalProperties": false,
"properties": {
"doi": {
"type": [
"string",
"null"
]
},
"source": {
"enum": [
"crossref",
"datacite"
],
"type": "string"
},
"status": {
"enum": [
"FOUND",
"NOT_FOUND",
"UNAVAILABLE",
"INVALID_RESPONSE"
],
"type": "string"
},
"title": {
"type": [
"string",
"null"
]
},
"type": {
"type": [
"string",
"null"
]
},
"year": {
"type": [
"integer",
"null"
]
}
},
"required": [
"source",
"status",
"doi",
"title",
"year",
"type"
],
"type": "object"
},
"maxItems": 2,
"minItems": 2,
"type": "array"
},
"version": {
"const": "1.0.0",
"type": "string"
}
},
"required": [
"product",
"version",
"queriedDoi",
"disposition",
"matches",
"sources",
"evidenceFingerprint",
"caveats"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}