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OpenAPI Specification

openapi: 3.2.0
info:
  title: Unit Applications API
  description: Unit is a Banking-as-a-Service (BaaS) platform.
  version: '1.0'
  contact:
    name: Unit
    url: https://www.unit.co
  license:
    name: Proprietary
    url: https://www.unit.co/legal/
servers:
- url: https://api.s.unit.sh
  description: Sandbox (confirmed - default server in Unit's published OpenAPI spec)
- url: https://api.unit.co
  description: Production (industry-standard Unit convention paired with the sandbox host; not independently re-confirmed against a live docs page in this research pass - verify with your Unit solution engineer)
security:
- bearerAuth: []
tags:
- name: Applications
  description: Individual and business application onboarding (KYC/KYB).
paths:
  /applications:
    get:
      operationId: getApplicationsList
      tags:
      - Applications
      summary: Get List Application
      description: Lists individual and business applications with filtering, sorting, and paging.
      parameters:
      - $ref: '#/components/parameters/PageLimit'
      - $ref: '#/components/parameters/PageOffset'
      - name: filter[status]
        in: query
        schema:
          type: array
          items:
            type: string
            enum:
            - AwaitingDocuments
            - PendingReview
            - Pending
            - Approved
            - Denied
            - Canceled
      responses:
        '200':
          $ref: '#/components/responses/ResourceList'
        default:
          $ref: '#/components/responses/DefaultError'
    post:
      operationId: createApplication
      tags:
      - Applications
      summary: Create Application
      description: Creates an individualApplication or businessApplication resource.
      requestBody:
        required: true
        content:
          application/vnd.api+json:
            schema:
              $ref: '#/components/schemas/CreateApplicationRequest'
      responses:
        '201':
          $ref: '#/components/responses/SingleResource'
        default:
          $ref: '#/components/responses/DefaultError'
  /applications/{applicationId}:
    parameters:
    - $ref: '#/components/parameters/ApplicationId'
    get:
      operationId: getApplication
      tags:
      - Applications
      summary: Get Application by Id
      responses:
        '200':
          $ref: '#/components/responses/SingleResource'
        '404':
          $ref: '#/components/responses/NotFound'
    patch:
      operationId: updateApplication
      tags:
      - Applications
      summary: Update Application
      requestBody:
        required: true
        content:
          application/vnd.api+json:
            schema:
              type: object
      responses:
        '200':
          $ref: '#/components/responses/SingleResource'
  /applications/{applicationId}/cancel:
    parameters:
    - $ref: '#/components/parameters/ApplicationId'
    post:
      operationId: cancelApplication
      tags:
      - Applications
      summary: Cancel Application by Id
      responses:
        '200':
          $ref: '#/components/responses/SingleResource'
  /applications/{applicationId}/documents:
    parameters:
    - $ref: '#/components/parameters/ApplicationId'
    get:
      operationId: getApplicationDocuments
      tags:
      - Applications
      summary: Get List of Documents
      responses:
        '200':
          $ref: '#/components/responses/ResourceList'
    post:
      operationId: createApplicationDocument
      tags:
      - Applications
      summary: Create an application document
      requestBody:
        required: true
        content:
          application/vnd.api+json:
            schema:
              type: object
      responses:
        '201':
          $ref: '#/components/responses/SingleResource'
  /applications/{applicationId}/documents/{documentId}/multipart:
    parameters:
    - $ref: '#/components/parameters/ApplicationId'
    - $ref: '#/components/parameters/DocumentId'
    put:
      operationId: uploadApplicationDocumentFile
      tags:
      - Applications
      summary: Upload an application document file (PDF, PNG, JPG)
      requestBody:
        required: true
        content:
          multipart/form-data:
            schema:
              type: object
              properties:
                file:
                  type: string
                  format: binary
      responses:
        '200':
          $ref: '#/components/responses/SingleResource'
  /applications/{applicationId}/documents/{documentId}/verify:
    parameters:
    - $ref: '#/components/parameters/ApplicationId'
    - $ref: '#/components/parameters/DocumentId'
    put:
      operationId: verifyDocument
      tags:
      - Applications
      summary: Verify a document
      responses:
        '200':
          $ref: '#/components/responses/SingleResource'
  /applications/{applicationId}/documents/{documentId}/download:
    parameters:
    - $ref: '#/components/parameters/ApplicationId'
    - $ref: '#/components/parameters/DocumentId'
    get:
      operationId: downloadDocument
      tags:
      - Applications
      summary: Download a Document
      responses:
        '200':
          description: The document file.
          content:
            application/pdf: {}
            image/png: {}
            image/jpeg: {}
  /applications/{applicationId}/missing-fields:
    parameters:
    - $ref: '#/components/parameters/ApplicationId'
    get:
      operationId: getApplicationMissingFields
      tags:
      - Applications
      summary: Get Missing Fields by Application ID
      responses:
        '200':
          $ref: '#/components/responses/SingleResource'
  /application-forms:
    get:
      operationId: getApplicationFormsList
      tags:
      - Applications
      summary: Get List Application Forms
      responses:
        '200':
          $ref: '#/components/responses/ResourceList'
    post:
      operationId: createApplicationForm
      tags:
      - Applications
      summary: Create Application Form
      requestBody:
        required: true
        content:
          application/vnd.api+json:
            schema:
              type: object
      responses:
        '201':
          $ref: '#/components/responses/SingleResource'
  /application-forms/{applicationFormId}:
    parameters:
    - name: applicationFormId
      in: path
      required: true
      schema:
        type: string
    get:
      operationId: getApplicationForm
      tags:
      - Applications
      summary: Get ApplicationForm by Id
      responses:
        '200':
          $ref: '#/components/responses/SingleResource'
  /beneficial-owner/{beneficialOwnerId}:
    parameters:
    - name: beneficialOwnerId
      in: path
      required: true
      schema:
        type: string
    patch:
      operationId: updateBusinessBeneficialOwner
      tags:
      - Applications
      summary: Update a Business Beneficial Owner via API
      requestBody:
        required: true
        content:
          application/vnd.api+json:
            schema:
              type: object
      responses:
        '200':
          $ref: '#/components/responses/SingleResource'
components:
  schemas:
    DefaultError:
      type: object
      properties:
        errors:
          type: array
          items:
            type: object
            properties:
              title:
                type: string
              status:
                type: string
              detail:
                type: string
    JsonApiSingleResponse:
      type: object
      properties:
        data:
          $ref: '#/components/schemas/JsonApiResource'
        included:
          type: array
          items:
            $ref: '#/components/schemas/JsonApiResource'
    JsonApiResource:
      type: object
      properties:
        type:
          type: string
          description: The JSON:API resource type, e.g. individualApplication, depositAccount, individualDebitCard, bookPayment, achPayment.
        id:
          type: string
        attributes:
          type: object
          additionalProperties: true
        relationships:
          type: object
          additionalProperties: true
    CreateApplicationRequest:
      type: object
      required:
      - data
      properties:
        data:
          type: object
          required:
          - type
          - attributes
          properties:
            type:
              type: string
              enum:
              - individualApplication
              - businessApplication
            attributes:
              type: object
              additionalProperties: true
    JsonApiListResponse:
      type: object
      properties:
        data:
          type: array
          items:
            $ref: '#/components/schemas/JsonApiResource'
        meta:
          type: object
          properties:
            pagination:
              type: object
              properties:
                total:
                  type: integer
                limit:
                  type: integer
                offset:
                  type: integer
  parameters:
    DocumentId:
      name: documentId
      in: path
      required: true
      schema:
        type: string
    PageOffset:
      name: page[offset]
      in: query
      schema:
        type: integer
        default: 0
    ApplicationId:
      name: applicationId
      in: path
      required: true
      schema:
        type: string
    PageLimit:
      name: page[limit]
      in: query
      schema:
        type: integer
        default: 100
        maximum: 1000
  responses:
    NotFound:
      description: The requested resource was not found.
      content:
        application/vnd.api+json:
          schema:
            $ref: '#/components/schemas/DefaultError'
    SingleResource:
      description: A single JSON:API resource.
      content:
        application/vnd.api+json:
          schema:
            $ref: '#/components/schemas/JsonApiSingleResponse'
    ResourceList:
      description: A page of JSON:API resources.
      content:
        application/vnd.api+json:
          schema:
            $ref: '#/components/schemas/JsonApiListResponse'
    DefaultError:
      description: Error response.
      content:
        application/vnd.api+json:
          schema:
            $ref: '#/components/schemas/DefaultError'
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: 'Bearer JWT issued as an org API token (Dashboard > Developers) or a customer API token. Sent as `Authorization: Bearer ${TOKEN}`. All request and response bodies use the `application/vnd.api+json` JSON:API media type.'