> ## Documentation Index > Fetch the complete documentation index at: https://developers.gonitro.com/docs/llms.txt > Use this file to discover all available pages before exploring further. # List themes > Retrieves all themes and their codes that are currently configured. A theme code can be supplied when creating a package; the package will then be rendered with the requested theming. ## OpenAPI ````yaml /nsev/api-reference/openapi.yaml get /themes openapi: 3.0.0 info: title: NSEV WebPortal API version: 4.0.0 contact: name: NSEV Support Team url: https://connectivegroup.my.site.com/s/contactsupport?language=en_US description: > **Nitro Sign Enterprise Verified (NSEV) WebPortal API Version 4** A comprehensive digital signing API that enables secure document signing workflows. This API provides endpoints for managing packages, documents, elements, stakeholders, and signing processes within the NSEV platform. ## Authentication This API supports multiple authentication methods: ### Basic Authentication Traditional HTTP Basic Authentication using username and password. ### OAuth 2.0 **Client Credentials Flow (Machine-to-Machine)** - Full API access including administrative endpoints - Ideal for server-to-server integrations **Authorization Code Flow (User-based)** - Limited API access excluding administrative endpoints - Ideal for user-facing applications - Supports delegated user access scenarios ## API Variants This specification is available in two variants: - **Full API**: Complete API with all endpoints (BasicAuth + OAuth2 M2M) - **User API**: Limited API excluding admin endpoints (OAuth2 user-based only) Administrative endpoints (`/poisonqueue`, `/absenceperiods`, `/auditproofs`) are restricted to machine-to-machine authentication only. ## Versioning This API follows semantic versioning principles. Major version changes may introduce breaking changes, while minor and patch versions maintain backwards compatibility. servers: - url: '{baseUrl}/esig/webportalapi/v4' variables: baseUrl: default: https://your-tenant.sign.gonitro.com description: >- Your tenant-specific base URL, including scheme and host (e.g. https://acme.sign.gonitro.com). Each NSEV customer has a unique URL. Replace this with yours before sending a request. The esig path segment is required - the Web Application Firewall routes requests on it. security: - basicAuth: [] - bearerAuth: [] tags: - name: Configuration description: | Endpoints for retrieving system configuration settings, contact groups, templates and signing methods. - name: Packages description: | Core endpoints for creating, managing, and tracking packages throughout their lifecycle. - name: Documents description: | Endpoints for adding, removing, and managing documents within packages. Handles document upload, processing, and metadata management. - name: Elements description: | Endpoints for managing elements (fields) within documents, including signatures and other form elements. - name: Stakeholders description: | Endpoints for managing stakeholders (recipients) associated with packages and their roles in the package workflow. - name: Actors description: | Endpoints for managing individual actors within stakeholders, including their contact information and role preferences: Approver, FormFiller, Signer or Receiver - name: Process description: | Endpoints for managing the package process workflow, including process steps, parallel actions, and workflow orchestration. - name: AuditTrails description: | Modern endpoints for retrieving comprehensive audit trails as signed PDFs, verifying the integrity of audit trail data and retrieving audit events. - name: BulkActions description: | Endpoints for performing and managing bulk actions on multiple packages. - name: Users description: | Endpoints for managing user accounts, including user invitations. - name: AbsencePeriods description: | Administrative endpoints for managing user absence periods and delegation settings during out-of-office scenarios. **Access Level**: Machine-to-machine only (administrative access required) paths: /themes: get: tags: - Configuration summary: List themes description: >- Retrieves all themes and their codes that are currently configured. A theme code can be supplied when creating a package; the package will then be rendered with the requested theming. operationId: listThemes parameters: - $ref: '#/components/parameters/continuationToken' - $ref: '#/components/parameters/maxQuantity' - $ref: '#/components/parameters/sortOrder' - name: sortField description: specify on which field to sort in: query schema: type: string default: code enum: - name - code responses: '200': description: OK content: application/json: schema: type: object properties: ContinuationToken: $ref: '#/components/schemas/ContinuationToken' Items: type: array description: The list containing the Themes items: type: object properties: Code: type: string description: The code of the Theme Name: type: string description: The name of the Theme MaxQuantity: type: integer description: >- The maximum number of results that will be returned per request Total: type: integer description: The total number of results. example: ContinuationToken: '1' Items: - Name: Nitro Theme Code: '00000' - Name: System Theme Code: '00001' - Name: My theme Code: '00003' MaxQuantity: 20, Total: 3 examples: themes: summary: OK value: ContinuationToken: '2' Items: - Code: '00001' Name: Corporate - Code: '00002' Name: High contrast MaxQuantity: 100 Total: 2 '400': description: >- When the MaxQuantity value was too large or the ContinuationToken invalid content: application/json: schema: type: array items: $ref: '#/components/schemas/ValidationError' examples: invalid-request: summary: >- When the MaxQuantity value was too large or the ContinuationToken invalid value: - ErrorCode: Request.UnsupportedValue ErrorMessage: The provided value is not supported. '401': $ref: '#/components/responses/UnAuthorized' components: parameters: continuationToken: name: continuationToken in: query description: >- The token to return to request the next page: the next page number as a string (for example `'2'`), as returned in the previous response's `ContinuationToken`. schema: type: string maxQuantity: name: maxQuantity in: query description: The maximum number of results to return schema: type: integer minimum: 1 maximum: 50 default: 20 sortOrder: name: sortOrder in: query description: specify how the result is sorted, default is ascending schema: type: string default: asc enum: - asc - desc schemas: ContinuationToken: type: string description: >- The token to pass as `continuationToken` to request the next page: the next page number as a string. example: '1' ValidationError: title: Validation error allOf: - $ref: '#/components/schemas/Error' - description: Request failed validation example: ErrorCode: Name.MinimumLength:6 ErrorMessage: The minimum length for a name is 6 Error: title: Error type: object description: Something that went wrong example: ErrorCode: Something.WentWrong ErrorMessage: Something went wrong properties: ErrorCode: type: string description: >- An error code of something that went wrong, in the form of 'Subject.Error:value' ErrorMessage: type: string description: A human-readable explanation of what went wrong responses: UnAuthorized: description: Caller is unauthorized to perform this operation securitySchemes: basicAuth: type: http scheme: basic bearerAuth: type: http scheme: bearer bearerFormat: JWT description: > Bearer token authentication using JSON Web Tokens (JWT) or opaque tokens. **Usage**: Send the access token in the Authorization header: ``` Authorization: Bearer ``` ````