Signicat · Schema
SigningSession
CompanyDigital IdentityAuthenticationE-SignatureKYCIdentity VerificationeIDFraud Prevention
Properties
| Name | Type | Description |
|---|---|---|
| id | string | |
| signatureUrl | string | |
| signatureUrlTTL | integer | Deprecated! Use signatureUrlTimeToLive instead. Time-to-live for the signature URL in minutes |
| signatureUrlTimeToLive | string | Time-to-live for the signature URL. Must be an ISO 8601 duration and a maximum of 45 days. |
| signatureUrlExpiresAt | string | |
| title | string | A title for the signing session. |
| signText | string | Text displayed when starting the signing process. The signer must explicitly consent to this text before signing. |
| dueDate | string | The deadline for signing the document(s). Optional; if omitted, defaults to 30 days after session creation. You can explicitly set a deadline up to 45 days into the future. |
| documents | array | |
| lifecycle | object | |
| output | object | |
| externalReference | stringnull | Custom identifier for linking the signing session to your internal process. Passed back in redirect URLs. |
| signingSetup | array | The user interaction setups for this signing session describing which IDPs are available for the end-user. |
| subsequentTo | array | IDs of signing sessions that must be signed before this one. |
| packageTo | array | A list of formats the signing session should be packaged to when signed. |
| sealTo | array | A list of formats the signing session should be sealed to when signed. |
| signer | object | The intended signer of the signing Session. |
| archive | object | Defines what objects should be added to archive. To use this functionality you must contact Si |
| preAuthentication | object | Sets up authentication of the signer before presenting documents. |
| ui | object | Defines UI settings for the signing session. |
| intentionText | object | A text indicating the end-user's intention when signing a document. Applicable when using flow PKISIGNING |
| redirectSettings | object | Defines URLs for redirects. |
| notifications | array | |
| usageTags | array | A list of tags to emit with events for the sign sessions |
| forwarding | object |
JSON Schema
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"$id": "https://raw.githubusercontent.com/api-evangelist/signicat/main/json-schema/signicat-signing-session-schema.json",
"title": "SigningSession",
"x-generated": "2026-10-18",
"x-method": "derived",
"x-generator": "derive-json-schema.py",
"x-source": "openapi/signicat-sign-openapi.yml#/components/schemas/SigningSession",
"type": "object",
"required": [
"title",
"documents",
"signingSetup"
],
"properties": {
"id": {
"type": "string",
"readOnly": true
},
"signatureUrl": {
"type": "string",
"readOnly": true
},
"signatureUrlTTL": {
"type": "integer",
"deprecated": true,
"description": "Deprecated! Use signatureUrlTimeToLive instead. Time-to-live for the signature URL in minutes",
"minimum": 5,
"maximum": 525600
},
"signatureUrlTimeToLive": {
"type": "string",
"description": "Time-to-live for the signature URL. Must be an ISO 8601 duration and a maximum of 45 days."
},
"signatureUrlExpiresAt": {
"type": "string",
"format": "date-time",
"readOnly": true
},
"title": {
"type": "string",
"maxLength": 255,
"description": "A title for the signing session."
},
"signText": {
"type": "string",
"maxLength": 2048,
"description": "Text displayed when starting the signing process. The signer must explicitly consent to this text before signing."
},
"dueDate": {
"type": "string",
"format": "date-time",
"description": "The deadline for signing the document(s). Optional; if omitted, defaults to 30 days after session creation. You can explicitly set a deadline up to 45 days into the future."
},
"documents": {
"type": "array",
"minItems": 1,
"maxItems": 100,
"nullable": false,
"items": {
"$ref": "#/$defs/SessionDocument"
}
},
"lifecycle": {
"$ref": "#/$defs/SessionLifecycle",
"readOnly": true
},
"output": {
"$ref": "#/$defs/SessionOutput"
},
"externalReference": {
"type": [
"string",
"null"
],
"maxLength": 1024,
"description": "Custom identifier for linking the signing session to your internal process. Passed back in redirect URLs."
},
"signingSetup": {
"description": "The user interaction setups for this signing session describing which IDPs are available for the end-user.",
"type": "array",
"items": {
"$ref": "#/$defs/SigningSetup"
},
"maxItems": 1,
"minItems": 1,
"nullable": false
},
"subsequentTo": {
"description": "IDs of signing sessions that must be signed before this one.",
"type": "array",
"maxItems": 50,
"items": {
"type": "string",
"format": "uuid"
}
},
"packageTo": {
"description": "A list of formats the signing session should be packaged to when signed.",
"type": "array",
"maxItems": 5,
"items": {
"$ref": "#/$defs/PackageType"
}
},
"sealTo": {
"description": "A list of formats the signing session should be sealed to when signed.",
"type": "array",
"maxItems": 5,
"items": {
"$ref": "#/$defs/SealPackageType"
}
},
"signer": {
"description": "The intended signer of the signing Session.",
"$ref": "#/$defs/Signer"
},
"archive": {
"description": "Defines what objects should be added to archive. To use this functionality you must contact <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https://dashboard.signicat.com/contact-us/tickets/new\">Signicat Support</a>.",
"$ref": "#/$defs/ArchiveSettings"
},
"preAuthentication": {
"description": "Sets up authentication of the signer before presenting documents.",
"$ref": "#/$defs/PreAuthentication"
},
"ui": {
"description": "Defines UI settings for the signing session.",
"$ref": "#/$defs/Ui"
},
"intentionText": {
"description": "A text indicating the end-user's intention when signing a document. Applicable when using flow PKISIGNING",
"$ref": "#/$defs/IntentionText"
},
"redirectSettings": {
"description": "Defines URLs for redirects.",
"$ref": "#/$defs/RedirectSettings"
},
"notifications": {
"type": "array",
"items": {
"description": "Defines SMS and EMAIL notifications.",
"$ref": "#/$defs/NotificationMessage"
}
},
"usageTags": {
"type": "array",
"maxItems": 25,
"items": {
"type": "string",
"maxLength": 50
},
"description": "A list of tags to emit with events for the sign sessions"
},
"forwarding": {
"$ref": "#/$defs/Forwarding"
}
},
"$defs": {
"ArchiveSettings": {
"type": "object",
"required": [
"retentionPeriod"
],
"properties": {
"sendSignatureResultsToArchive": {
"type": "boolean"
},
"sendPackagingResultToArchive": {
"type": "boolean"
},
"sendSealingResultToArchive": {
"type": "boolean",
"description": "Whether generated sealing results should be sent to Archive."
},
"retentionPeriod": {
"type": "string",
"description": "How long the archived documents should be stored, in ISO 8601 duration format. Maximum 50 years."
},
"archiveTags": {
"type": "array",
"maxItems": 25,
"items": {
"type": "string",
"maxLength": 50
},
"description": "A list of tags to associate with the archived document."
}
}
},
"ArtifactType": {
"type": "string",
"enum": [
"XADES",
"PADES"
]
},
"CommunicationMethod": {
"type": "string",
"enum": [
"SMS",
"EMAIL"
]
},
"Forwarding": {
"type": "object",
"properties": {
"flow": {
"$ref": "#/$defs/ForwardingFlow"
},
"parentSessionId": {
"type": [
"string",
"null"
],
"format": "uuid",
"readOnly": true,
"description": "The ID of the session that was forwarded to create this session"
},
"childSessionIds": {
"type": "array",
"items": {
"type": "string",
"format": "uuid"
},
"readOnly": true,
"description": "List of child session IDs created by forwarding this session"
},
"senderAddress": {
"type": "string",
"maxLength": 255,
"description": "The email address that the person forwarded to receives email notifications from."
}
}
},
"ForwardingFlow": {
"type": "string",
"enum": [
"FORWARD_AND_CONTINUE",
"NONE"
]
},
"IdentityProvider": {
"type": "object",
"properties": {
"idpName": {
"type": "string",
"maxLength": 64
}
},
"required": [
"idpName"
]
},
"IntentionText": {
"type": "object",
"required": [
"value",
"format"
],
"properties": {
"value": {
"type": "string",
"maxLength": 1024,
"description": "Intention text value to display in the UI"
},
"format": {
"description": "Format of the intention text to display in the UI",
"$ref": "#/$defs/IntentionTextFormat"
}
}
},
"IntentionTextFormat": {
"type": "string",
"enum": [
"TEXT",
"MARKDOWN"
]
},
"LanguageEnum": {
"type": "string",
"enum": [
"da",
"de",
"en",
"fi",
"nb",
"nn",
"sv"
]
},
"NotificationCategory": {
"type": "string",
"enum": [
"SIGNING_NOTIFICATION",
"FORWARDING_NOTIFICATION"
]
},
"NotificationMessage": {
"type": "object",
"required": [
"communicationMethod",
"category"
],
"properties": {
"category": {
"$ref": "#/$defs/NotificationCategory"
},
"communicationMethod": {
"$ref": "#/$defs/CommunicationMethod"
},
"tags": {
"type": "array",
"maxItems": 25,
"items": {
"type": "string",
"maxLength": 50
}
},
"message": {
"description": "Message settings for the notification",
"$ref": "#/$defs/NotificationMessageContent"
}
}
},
"NotificationMessageContent": {
"type": "object",
"required": [
"text"
],
"properties": {
"language": {
"description": "Specifies the language to be used in the notification",
"$ref": "#/$defs/LanguageEnum"
},
"header": {
"type": "string"
},
"text": {
"type": "string"
},
"senderAddress": {
"type": "string"
},
"senderName": {
"type": "string"
},
"includeFile": {
"type": "boolean"
}
}
},
"PackageType": {
"type": "string",
"enum": [
"PADES_CONTAINER"
]
},
"PreAuthentication": {
"type": "object",
"required": [
"enabled"
],
"properties": {
"enabled": {
"type": "boolean"
},
"identityProviders": {
"type": "array",
"maxItems": 50,
"items": {
"$ref": "#/$defs/IdentityProvider"
},
"description": "The identity providers offered to the signer during pre-authentication."
}
}
},
"RedirectSettings": {
"type": "object",
"properties": {
"error": {
"type": "string",
"format": "url",
"maxLength": 2048
},
"cancel": {
"type": "string",
"format": "url",
"maxLength": 2048
},
"success": {
"type": "string",
"format": "url",
"maxLength": 2048
},
"reject": {
"type": [
"string",
"null"
],
"format": "url",
"maxLength": 2048
}
},
"required": [
"error",
"cancel",
"success"
]
},
"SealPackageType": {
"type": "string",
"enum": [
"XADES_CONTAINER"
]
},
"SessionDocument": {
"type": "object",
"required": [
"documentCollectionId",
"action",
"documentId"
],
"properties": {
"documentCollectionId": {
"type": "string",
"format": "uuid",
"description": "The unique ID of the document collection this document belongs to."
},
"action": {
"type": "string",
"enum": [
"VIEW",
"SIGN"
],
"description": "The action the signer is meant to perform on this document."
},
"documentId": {
"type": "string",
"format": "uuid",
"description": "The unique ID of the uploaded document."
}
}
},
"SessionLifecycle": {
"type": "object",
"description": "Contains session lifecycle metadata.",
"readOnly": true,
"properties": {
"state": {
"$ref": "#/$defs/SessionState"
},
"stateIsFinal": {
"type": "boolean"
},
"rejectReason": {
"type": [
"string",
"null"
],
"maxLength": 1024
}
}
},
"SessionOutput": {
"type": "object",
"readOnly": true,
"properties": {
"signatures": {
"type": [
"array",
"null"
],
"minItems": 1,
"maxItems": 100,
"items": {
"$ref": "#/$defs/SessionSignature"
}
},
"packages": {
"type": [
"array",
"null"
],
"minItems": 1,
"maxItems": 100,
"items": {
"$ref": "#/$defs/SessionPackage"
}
},
"userInfo": {
"$ref": "#/$defs/UserInfo",
"nullable": true
},
"seals": {
"type": [
"array",
"null"
],
"minItems": 1,
"maxItems": 100,
"items": {
"$ref": "#/$defs/SessionSeal"
}
}
}
},
"SessionPackage": {
"type": "object",
"description": "Contains session package metadata",
"properties": {
"packageId": {
"type": "string",
"format": "uuid"
},
"resultDocumentId": {
"type": "string",
"format": "uuid"
},
"resultArchiveId": {
"type": "string",
"format": "uuid"
},
"packageType": {
"$ref": "#/$defs/PackageType"
}
}
},
"SessionSeal": {
"type": "object",
"description": "Contains session seal metadata",
"properties": {
"sealId": {
"type": "string",
"format": "uuid"
},
"resultDocumentId": {
"type": "string",
"format": "uuid"
},
"resultArchiveId": {
"type": "string",
"format": "uuid"
},
"packageType": {
"$ref": "#/$defs/SealPackageType"
},
"originalDocumentId": {
"type": "string",
"format": "uuid"
}
}
},
"SessionSignature": {
"type": "object",
"required": [
"resultDocumentId",
"signatureType"
],
"properties": {
"documentCollectionId": {
"type": "string",
"format": "uuid"
},
"resultDocumentId": {
"type": "string",
"format": "uuid"
},
"originalDocumentId": {
"type": "string",
"format": "uuid"
},
"resultArchiveId": {
"type": "string",
"format": "uuid"
},
"signatureType": {
"$ref": "#/$defs/ArtifactType"
}
}
},
"SessionState": {
"type": "string",
"enum": [
"BLOCKED",
"READY",
"SIGNED",
"REJECTED"
]
},
"Signer": {
"type": "object",
"properties": {
"email": {
"type": "string",
"format": "email",
"minLength": 6,
"maxLength": 127
},
"mobile": {
"type": "string",
"maxLength": 20
},
"nationalIdentificationNumber": {
"type": "string",
"maxLength": 20
},
"username": {
"type": "string"
},
"prefill": {
"type": "array",
"items": {
"$ref": "#/$defs/SignerPrefillEnum"
}
},
"validations": {
"type": "array",
"maxItems": 10,
"items": {
"$ref": "#/$defs/SignerValidationEnum"
},
"uniqueItems": true
}
}
},
"SignerPrefillEnum": {
"type": "string",
"enum": [
"NATIONAL_IDENTIFICATION_NUMBER"
]
},
"SignerValidationEnum": {
"type": "string",
"enum": [
"NATIONAL_IDENTIFICATION_NUMBER"
]
},
"SigningFlow": {
"type": "string",
"enum": [
"AUTHENTICATION_BASED",
"PKISIGNING"
]
},
"SigningSetup": {
"type": "object",
"description": "What IdPs are available to the end-user and what type of signing flow should take place.",
"properties": {
"vendor": {
"$ref": "#/$defs/VendorEnum"
},
"identityProviders": {
"type": "array",
"maxItems": 50,
"items": {
"$ref": "#/$defs/IdentityProvider"
},
"description": "The list of identity providers (IdPs) available for the end-user to choose from. If not specified, all configured IdPs on the account will be shown as options."
},
"signingFlow": {
"$ref": "#/$defs/SigningFlow",
"description": "The type of signing flow to be performed. `AUTHENTICATION_BASED` is a simple flow which uses authentication evidence as input for displaying information in the PAdES/XAdES.\n"
},
"additionalParameters": {
"type": [
"object",
"null"
],
"additionalProperties": {
"type": "string",
"maxLength": 1000
},
"description": "Additional parameters that modify the authentication flow. Depends on selected IdP. See <a href=\"https://developer.signicat.com/identity-methods/\">developer documentation</a> for details.\n"
},
"requestedAttributes": {
"type": [
"array",
"null"
],
"items": {
"type": "string"
},
"description": "Requested Attributes from IDP (name and idp attributes are default)"
}
},
"required": [
"signingFlow",
"identityProviders"
]
},
"Ui": {
"type": "object",
"properties": {
"language": {
"description": "Specifies the language to be used in the signing UI.",
"$ref": "#/$defs/LanguageEnum"
},
"hideWelcomeScreen": {
"type": "boolean",
"description": "Hides the welcome dialog in the signing UI"
},
"minimalTextMode": {
"type": "boolean",
"description": "Enables a minimal UI mode for a single and short text/plain document"
}
}
},
"UserInfo": {
"type": "object",
"description": "The subject attributes of the signer, as described by the IdP.",
"properties": {
"signingTime": {
"type": "string"
},
"fullName": {
"type": "string"
},
"dateOfBirth": {
"type": "string"
},
"nin": {
"type": "string"
},
"firstName": {
"type": "string"
},
"lastName": {
"type": "string"
},
"extra": {
"type": "object",
"additionalProperties": {
"type": "string"
}
}
}
},
"VendorEnum": {
"type": "string",
"enum": [
"NBID"
]
}
}
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