Stanford University · Schema
Preservation Catalog HTTP API — component schemas
JSON Schema extracted from the components.schemas block of Stanford University Libraries' first-party OpenAPI for the Preservation Catalog HTTP API. Institution-operated: every server in the source contract is under stanford.edu.
UniversityHigher EducationEducationResearchUnited StatesCaliforniaPrivate Research UniversityAssociation of American UniversitiesResearch RepositoryCourse CatalogIdentity FederationLibraryDigital RepositoryArtificial IntelligenceIIIF
JSON Schema
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"$id": "https://raw.githubusercontent.com/api-evangelist/stanford/main/json-schema/stanford-preservation-catalog-api-schemas.json",
"title": "Preservation Catalog HTTP API \u2014 component schemas",
"description": "JSON Schema extracted from the components.schemas block of Stanford University Libraries' first-party OpenAPI for the Preservation Catalog HTTP API. Institution-operated: every server in the source contract is under stanford.edu.",
"x-operator": "institution",
"x-generated": "2026-08-19",
"x-method": "derived",
"x-source": "https://raw.githubusercontent.com/sul-dlss/preservation_catalog/main/openapi.yml",
"$defs": {
"Druid": {
"description": "Digital Repository Unique Identifier (bare or prefixed)",
"type": "string",
"pattern": "^(druid:)?[b-df-hjkmnp-tv-z]{2}[0-9]{3}[b-df-hjkmnp-tv-z]{2}[0-9]{4}$",
"example": "druid:bc123df4567"
},
"DruidWithOptionalFormat": {
"description": "Digital Repository Unique Identifier (bare or prefixed), with a file extension",
"type": "string",
"pattern": "^(druid:)?[b-df-hjkmnp-tv-z]{2}[0-9]{3}[b-df-hjkmnp-tv-z]{2}[0-9]{4}(\\.json)?$",
"example": "druid:bc123df4567.json"
},
"CatalogOptions": {
"description": "Options for catalog controller endpoint",
"type": "object",
"properties": {
"incoming_version": {
"description": "Version of the object",
"type": "integer"
},
"incoming_size": {
"description": "Size in bytes of the object on disk",
"type": "integer"
},
"storage_location": {
"description": "Storage root where the moab object is located (must correspond to a real MoabStorageRoot)",
"type": "string"
},
"checksums_validated": {
"description": "If the checksums for the moab object have previously been validated by caller (boolean/int as string)",
"oneOf": [
{
"type": "boolean"
},
{
"type": "string",
"enum": [
"true",
"True",
"TRUE",
"nil",
"1",
"on",
"false",
"False",
"FALSE"
]
}
]
}
},
"required": [
"incoming_version",
"incoming_size",
"storage_location"
]
},
"CatalogOptionsWithDruid": {
"allOf": [
{
"$ref": "#/components/schemas/CatalogOptions"
},
{
"type": "object",
"properties": {
"druid": {
"$ref": "#/components/schemas/Druid"
}
},
"required": [
"druid"
]
}
]
},
"ContentDiff": {
"description": "A diff between given and existing content metadata (XML)",
"type": "object",
"properties": {
"objectId": {
"$ref": "#/components/schemas/Druid"
},
"differenceCount": {
"type": "string",
"example": "2"
},
"basis": {
"type": "string",
"example": "v1-contentMetadata-all"
},
"other": {
"type": "string",
"example": "new-contentMetadata-all"
},
"reportDatetime": {
"type": "string",
"format": "date-time"
},
"fileGroupDifference": {
"type": "object",
"properties": {
"groupId": {
"type": "string"
},
"differenceCount": {
"type": "string"
},
"identical": {
"type": "string"
},
"copyadded": {
"type": "string"
},
"copydeleted": {
"type": "string"
},
"renamed": {
"type": "string"
},
"modified": {
"type": "string"
},
"added": {
"type": "string"
},
"deleted": {
"type": "string"
},
"subset": {
"type": "array",
"items": {
"type": "object",
"properties": {
"change": {
"type": "string"
},
"count": {
"type": "string"
},
"file": {
"type": "array",
"items": {
"type": "object",
"properties": {
"change": {
"type": "string"
},
"basisPath": {
"type": "string"
},
"otherPath": {
"type": "string"
},
"fileSignature": {
"type": "object",
"properties": {
"size": {
"type": "string"
},
"md5": {
"type": "string"
},
"sha1": {
"type": "string"
},
"sha256": {
"type": "string"
}
}
}
}
}
}
}
}
}
}
}
},
"required": [
"object_id",
"difference_count",
"basis",
"other",
"report_datetime"
]
},
"ChecksumsForObject": {
"description": "A representation of all files and checksums for a single object",
"type": "array",
"items": {
"type": "object",
"properties": {
"filename": {
"type": "string",
"example": "eric-smith-dissertation.pdf"
},
"md5": {
"type": "string",
"example": "aead2f6f734355c59af2d5b2689e4fb3"
},
"sha1": {
"type": "string",
"example": "22dc6464e25dc9a7d600b1de6e3848bf63970595"
},
"sha256": {
"type": "string",
"example": "e49957d53fb2a46e3652f4d399bd14d019600cf496b98d11ebcdf2d10a8ffd2f"
},
"filesize": {
"type": "integer",
"example": 1000217
}
},
"required": [
"filename",
"md5",
"sha1",
"sha256",
"filesize"
]
}
},
"PreservedObject": {
"description": "A preserved object instance",
"type": "object",
"properties": {
"druid": {
"$ref": "#/components/schemas/Druid"
},
"current_version": {
"type": "integer",
"example": 13
},
"ok_on_local_storage": {
"description": "True if the files for the object on local storage (as represented by the MoabRecord) are not in an error state",
"type": "boolean"
}
},
"required": [
"druid",
"current_version",
"ok_on_local_storage"
]
},
"AuditResult": {
"description": "A single audit result",
"type": "object"
},
"AuditResultsResponse": {
"description": "Audit results response",
"type": "object",
"properties": {
"druid": {
"$ref": "#/components/schemas/Druid"
},
"result_array": {
"type": "array",
"items": {
"$ref": "#/components/schemas/AuditResult"
}
}
},
"required": [
"druid",
"result_array"
]
}
}
}
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