Vistra Documents API

openapi: 3.1.0
info:
  title: Vistra Incorporations Documents API
  description: 'The Vistra Incorporations API enables programmatic submission of company incorporation requests in supported jurisdictions. Currently available for the British Virgin Islands (BVI) on an invite-only basis. The API supports a three-step workflow: (1) generate a pre-signed S3 document upload URL, (2) confirm document upload completion, and (3) submit the full incorporation request with entity details, stakeholders, shareholding structure, and compliance data. Authentication uses OAuth2 bearer tokens obtained from the Vistra Developer Portal.'
  version: '1.0'
  contact:
    name: Vistra Developer Support
    url: https://devportal.vistra.com/
  license:
    name: Vistra Terms of Use
    url: https://www.vistra.com/terms-of-use
  termsOfService: https://www.vistra.com/terms-of-use
servers:
- url: https://api.vistra.com
  description: Vistra Production API
security:
- OAuth2Bearer: []
tags:
- name: Documents
  description: Document upload URL generation and completion notification
paths:
  /v1/external/documents/upload-url:
    post:
      operationId: generateDocumentUploadUrl
      summary: Generate Document Upload URL
      description: Generates a pre-signed S3 URL for uploading a supporting document for an incorporation request. The response includes a document ID and an upload URL that is valid for one minute. Upload the file directly to the pre-signed URL using an HTTP PUT request, then call the upload-complete endpoint with the document ID to notify Vistra the upload has finished.
      tags:
      - Documents
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/DocumentUploadRequest'
      responses:
        '200':
          description: Pre-signed upload URL and document ID
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/DocumentUploadResponse'
        '400':
          description: Invalid request parameters
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: Unauthorized - Invalid or missing bearer token
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '500':
          description: Internal server error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
  /v1/external/documents/{id}/upload-complete:
    post:
      operationId: completeDocumentUpload
      summary: Complete Document Upload
      description: Notifies Vistra that a document upload to the pre-signed S3 URL has completed successfully. This endpoint must be called after the file has been uploaded directly to the pre-signed URL. The response confirms the document ID and returns file metadata including filename and size. The document ID is then used when submitting the incorporation request.
      tags:
      - Documents
      parameters:
      - name: id
        in: path
        required: true
        description: The document ID returned by the generate-upload-url endpoint
        schema:
          type: string
      responses:
        '200':
          description: Document upload confirmed with file details
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/DocumentUploadCompleteResponse'
        '400':
          description: Invalid document ID or upload not yet completed
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: Document ID not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '500':
          description: Internal server error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
components:
  schemas:
    DocumentUploadCompleteResponse:
      type: object
      description: Confirmation that a document upload has been registered
      properties:
        documentId:
          type: string
          description: Document identifier
        filename:
          type: string
          description: Uploaded filename
        size:
          type: integer
          description: File size in bytes
        status:
          type: string
          description: Upload status
          enum:
          - completed
          - pending
          - failed
    DocumentUploadResponse:
      type: object
      description: Pre-signed S3 URL and document ID for uploading a document
      properties:
        documentId:
          type: string
          description: Unique identifier for this document, used in subsequent calls
        uploadUrl:
          type: string
          description: Pre-signed S3 URL for HTTP PUT file upload (valid for 1 minute)
        expiresAt:
          type: string
          format: date-time
          description: Expiry timestamp of the upload URL
    DocumentUploadRequest:
      type: object
      description: Request to generate a pre-signed document upload URL
      required:
      - filename
      - contentType
      properties:
        filename:
          type: string
          description: Name of the file to upload
          example: passport-john-doe.pdf
        contentType:
          type: string
          description: MIME type of the file
          example: application/pdf
        description:
          type: string
          description: Optional description of the document
    Error:
      type: object
      description: API error response
      properties:
        code:
          type: string
          description: Error code
        message:
          type: string
          description: Human-readable error message
        details:
          type: string
          description: Additional error details
  securitySchemes:
    OAuth2Bearer:
      type: http
      scheme: bearer
      description: OAuth2 bearer token obtained from the Vistra Developer Portal. Include in the Authorization header as "Bearer {token}".
externalDocs:
  description: Vistra Incorporations API Documentation
  url: https://help.vistra.com/en/articles/10351085-vistra-incorporations-api-british-virgin-islands