openapi: 3.1.0
info:
  title: Microsoft Windows 10 Windows Background Tasks Accelerometer Attestation API
  description: API for running code in the background when an application is suspended or not running. Based on the Windows.ApplicationModel.Background namespace, it supports time-triggered, system-triggered, and maintenance-triggered background tasks. Key classes include BackgroundTaskBuilder, BackgroundTaskRegistration, SystemTrigger, TimeTrigger, and BackgroundTaskCompletedEventArgs.
  version: 1.0.0
  contact:
    name: Microsoft Developer Support
    url: https://learn.microsoft.com/en-us/windows/apps/windows-app-sdk/applifecycle/background-tasks
  license:
    name: Microsoft Software License
    url: https://www.microsoft.com/en-us/legal/terms-of-use
servers:
- url: https://api.windows.com
  description: Windows Platform API
tags:
- name: Attestation
paths:
  /hello/attestation:
    get:
      operationId: getKeyAttestation
      summary: Microsoft Windows 10 Get key attestation
      description: Retrieves attestation information for a Windows Hello key credential using KeyCredential.GetAttestationAsync. Returns a KeyCredentialAttestationResult with an attestation buffer and certificate chain that can be sent to a server to verify the key was generated in a secure environment (TPM).
      tags:
      - Attestation
      parameters:
      - name: accountId
        in: query
        required: true
        description: Account identifier for the credential
        schema:
          type: string
      responses:
        '200':
          description: Attestation retrieved
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AttestationResult'
        '404':
          description: Credential not found
components:
  schemas:
    AttestationResult:
      type: object
      properties:
        status:
          type: string
          enum:
          - Success
          - TemporaryFailure
          - NotSupported
          description: Attestation result status
        attestationBuffer:
          type: string
          format: byte
          description: Base64-encoded attestation data
        certificateChainBuffer:
          type: string
          format: byte
          description: Base64-encoded certificate chain
externalDocs:
  description: Background Tasks Documentation
  url: https://learn.microsoft.com/en-us/windows/apps/windows-app-sdk/applifecycle/background-tasks