openapi: 3.0.3
info:
  title: Kontomatik Account Information Service Aggregation Labeling API
  version: 1.0.0
  description: 'PSD2-regulated Account Information Service (AIS) for connecting to end-user

    bank accounts across Central and Eastern Europe. Supports Single Access

    (one-time data fetch) and Multiple Access (reusable consent token, up to

    180 days), redirection-based SignIn Flow, and mock-bank testing.

    '
  contact:
    name: Kontomatik Support
    email: support@kontomatik.com
    url: https://developer.kontomatik.com/
  license:
    name: Commercial — see https://kontomatik.com
servers:
- url: https://api.kontomatik.com/v1
  description: Production
- url: https://test.api.kontomatik.com/v1
  description: Test
security:
- ApiKeyAuth: []
tags:
- name: Labeling
  description: Transaction categorization
paths:
  /labeling:
    get:
      tags:
      - Labeling
      summary: Get Transaction Labels
      description: Returns transaction labels (salary, rent, utilities, etc.) for an owner's imported data.
      operationId: getLabeling
      parameters:
      - name: ownerExternalId
        in: query
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Labels returned
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/LabelingResult'
  /external-data-labeling:
    post:
      tags:
      - Labeling
      summary: Label External Transactions
      description: Labels transactions submitted from non-bank sources.
      operationId: labelExternalData
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ExternalLabelingRequest'
      responses:
        '200':
          description: External labels returned
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/LabelingResult'
components:
  schemas:
    LabelingResult:
      type: object
      properties:
        ownerExternalId:
          type: string
        labels:
          type: array
          items:
            type: object
            properties:
              transactionId:
                type: string
              category:
                type: string
              confidence:
                type: number
                format: float
    ExternalLabelingRequest:
      type: object
      required:
      - transactions
      properties:
        ownerExternalId:
          type: string
        transactions:
          type: array
          items:
            type: object
            properties:
              externalId:
                type: string
              date:
                type: string
                format: date
              amount:
                type: number
              currency:
                type: string
              description:
                type: string
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: X-Api-Key
      description: API key issued by Kontomatik; requests must originate from a whitelisted server.