openapi: 3.0.1
info:
  title: Basis Theory 3D Secure Applications API
  description: The Basis Theory API is a PCI Level 1 compliant tokenization and data vault platform. It lets developers tokenize, store, and use sensitive data - cardholder data, PII, PHI, and bank account numbers - without that data touching their own systems. The API exposes Tokens, batch Tokenize / Detokenize, Applications, the detokenizing Proxy (pre-configured and ephemeral), serverless Reactors, 3D Secure, Tenants, Logs, and Webhooks. All requests are authenticated with a `BT-API-KEY` request header.
  termsOfService: https://basistheory.com/terms
  contact:
    name: Basis Theory Support
    email: support@basistheory.com
    url: https://developers.basistheory.com
  version: '1.0'
servers:
- url: https://api.basistheory.com
  description: Production environment (PRODUCTION tenants)
- url: https://api.test.basistheory.com
  description: Test environment (TEST tenants)
security:
- ApiKey: []
tags:
- name: Applications
  description: Manage API credentials, permissions, and access rules.
paths:
  /applications:
    post:
      operationId: createApplication
      tags:
      - Applications
      summary: Create an application
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateApplicationRequest'
      responses:
        '201':
          description: The created application, including the generated key.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Application'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '403':
          $ref: '#/components/responses/Forbidden'
        '422':
          $ref: '#/components/responses/ValidationProblem'
    get:
      operationId: listApplications
      tags:
      - Applications
      summary: List applications
      parameters:
      - name: id
        in: query
        schema:
          type: array
          items:
            type: string
      - name: type
        in: query
        schema:
          type: array
          items:
            type: string
      responses:
        '200':
          description: A paginated list of applications.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApplicationPaginatedList'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /applications/{id}:
    get:
      operationId: getApplication
      tags:
      - Applications
      summary: Get an application
      parameters:
      - $ref: '#/components/parameters/ApplicationId'
      responses:
        '200':
          description: The requested application.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Application'
        '404':
          $ref: '#/components/responses/NotFound'
    put:
      operationId: updateApplication
      tags:
      - Applications
      summary: Update an application
      parameters:
      - $ref: '#/components/parameters/ApplicationId'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/UpdateApplicationRequest'
      responses:
        '200':
          description: The updated application.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Application'
        '404':
          $ref: '#/components/responses/NotFound'
        '422':
          $ref: '#/components/responses/ValidationProblem'
    delete:
      operationId: deleteApplication
      tags:
      - Applications
      summary: Delete an application
      parameters:
      - $ref: '#/components/parameters/ApplicationId'
      responses:
        '204':
          description: The application was deleted.
        '404':
          $ref: '#/components/responses/NotFound'
  /applications/key:
    get:
      operationId: getApplicationByKey
      tags:
      - Applications
      summary: Get application by key
      description: Returns the application associated with the BT-API-KEY used on the request.
      responses:
        '200':
          description: The application for the supplied key.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Application'
        '401':
          $ref: '#/components/responses/Unauthorized'
components:
  schemas:
    ApplicationPaginatedList:
      type: object
      properties:
        pagination:
          $ref: '#/components/schemas/Pagination'
        data:
          type: array
          items:
            $ref: '#/components/schemas/Application'
    UpdateApplicationRequest:
      type: object
      required:
      - name
      properties:
        name:
          type: string
        permissions:
          type: array
          items:
            type: string
        rules:
          type: array
          items:
            $ref: '#/components/schemas/AccessRule'
    ValidationProblemDetails:
      type: object
      properties:
        title:
          type: string
        status:
          type: integer
        errors:
          type: object
          additionalProperties:
            type: array
            items:
              type: string
    CreateApplicationRequest:
      type: object
      required:
      - name
      - type
      properties:
        name:
          type: string
        type:
          type: string
          enum:
          - public
          - private
          - management
          - expiring
        permissions:
          type: array
          items:
            type: string
        rules:
          type: array
          items:
            $ref: '#/components/schemas/AccessRule'
        create_key:
          type: boolean
          default: true
        expires_at:
          type: string
          format: date-time
    Pagination:
      type: object
      properties:
        total_items:
          type: integer
        page_number:
          type: integer
        page_size:
          type: integer
        total_pages:
          type: integer
    AccessRule:
      type: object
      properties:
        description:
          type: string
        priority:
          type: integer
        container:
          type: string
        transform:
          type: string
          enum:
          - redact
          - mask
          - reveal
        permissions:
          type: array
          items:
            type: string
    Application:
      type: object
      properties:
        id:
          type: string
          format: uuid
        tenant_id:
          type: string
          format: uuid
        name:
          type: string
        key:
          type: string
          description: The application key, returned only on creation when create_key is true.
        type:
          type: string
          enum:
          - public
          - private
          - management
          - expiring
        permissions:
          type: array
          items:
            type: string
        rules:
          type: array
          items:
            $ref: '#/components/schemas/AccessRule'
        expires_at:
          type: string
          format: date-time
        created_at:
          type: string
          format: date-time
    ProblemDetails:
      type: object
      properties:
        title:
          type: string
        status:
          type: integer
        detail:
          type: string
  responses:
    Forbidden:
      description: The application lacks the required permission.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ProblemDetails'
    NotFound:
      description: The requested resource was not found.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ProblemDetails'
    Unauthorized:
      description: The BT-API-KEY header is missing or invalid.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ProblemDetails'
    ValidationProblem:
      description: The request failed validation.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ValidationProblemDetails'
  parameters:
    ApplicationId:
      name: id
      in: path
      required: true
      description: The unique identifier of the application.
      schema:
        type: string
        format: uuid
  securitySchemes:
    ApiKey:
      type: apiKey
      in: header
      name: BT-API-KEY
      description: Authenticate every request with a Basis Theory Application key supplied in the BT-API-KEY request header.