University of Washington Pre Auth API

openapi: 3.2.0
info:
  title: Token Authentication Web Service REST API V2 Preauth API
  description: This is the API specification for V2 of the UW-IT Token Authentication Rest API. Note that there are header and querystring paramemters not documentered here (see also https://wiki.cac.washington.edu/x/GY6kB). The -type and -pretty querystring parameters are included here for GET requests since they make testing much easier.
  version: 2.0.0
servers:
- url: https://taws.s.uw.edu:716/token/v2
tags:
- name: Pre Auth
paths:
  /preauth/{user}:
    get:
      tags:
      - Pre Auth
      summary: The Preauth endpoint returns the user's available authentication factors
      description: The Preauth endpoint determines whether a user is authorized to log in, and (if so) returns the user's available authentication factors. The user is typically a UWNetID.
      parameters:
      - name: user
        in: path
        description: User identifier.  Typically a UWNetID
        required: true
        schema:
          type: string
          format: string
      - name: crn
        in: query
        description: Crn value
        schema:
          type: string
          format: string
      - name: -type
        in: query
        description: Data return type
        schema:
          type: string
          format: string
          default: json
      - name: -pretty
        in: query
        description: Request pretty-printed data for humans
        schema:
          type: boolean
          default: true
      responses:
        '200':
          description: An array of Preauth objects
          content:
            application/json; charset=UTF-8; v=2.0:
              schema:
                $ref: '#/components/schemas/PreauthGetResult'
        '400':
          description: Invalid user
          content:
            application/json; charset=UTF-8; v=2.0:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: User did not match any records
          content:
            application/json; charset=UTF-8; v=2.0:
              schema:
                $ref: '#/components/schemas/Error'
        '405':
          description: Method not allowed
          content:
            application/json; charset=UTF-8; v=2.0:
              schema:
                $ref: '#/components/schemas/Error'
        '406':
          description: Content type not supported
          content:
            application/json; charset=UTF-8; v=2.0:
              schema:
                $ref: '#/components/schemas/Error'
        '500':
          description: Internal Server Error
          content:
            application/json; charset=UTF-8; v=2.0:
              schema:
                $ref: '#/components/schemas/Error'
        '501':
          description: Not implemented
          content:
            application/json; charset=UTF-8; v=2.0:
              schema:
                $ref: '#/components/schemas/Error'
        '503':
          description: Service Unavailable
          content:
            application/json; charset=UTF-8; v=2.0:
              schema:
                $ref: '#/components/schemas/Error'
      operationId: getPreauthByUser
      x-operation-id-source: derived
components:
  schemas:
    Error:
      type: object
      properties:
        error:
          type: object
          properties:
            code:
              type: integer
              format: int32
            message:
              type: string
    PreauthGetResult:
      type: object
      properties:
        preauth:
          type: array
          description: Array of preauth objects matching search parameter
          items:
            type: object
            properties:
              user:
                type: string
                description: Unique identifier for a person.
              vendor:
                type: string
                description: Authentication vendor name
              prompt:
                type: object
                properties:
                  text:
                    type: string
                    description: Authentication menu, describing numeric choices for user to choose from
                  factors:
                    type: object
                    properties:
                      '{number}':
                        type: string
                        description: Factor corresponding to numeric menu choice
                      default:
                        type: string
                        description: Default factor to use when menu is not presented to user
                    description: Authentication factors for menu choices
                description: Prompt information for user authentication menu choice
              devices:
                type: array
                description: List of authentication devices for a user
                items:
                  type: object
                  properties:
                    device:
                      type: string
                      description: Device identifier
                    display_name:
                      type: string
                      description: A short description, suitable to identify the device in a prompt
                    name:
                      type: string
                      description: The device's name
                    capabilities:
                      type: array
                      description: List of capabilities for the device
                      items:
                        type: string
                        description: 'Can be one of: ''push'', ''sms'', ''phone'', ''mobile_otp''.  ''push'' means the device is activated for Duo Push.  ''sms'' means the device can receive batches of SMS passcodes.  ''phone'' means the device can receive phone calls.  ''mobile_otp'' means the device is capable of generating passcodes with Duo Mobile app.'
                    sms_nextcode:
                      type: string
                      description: Single-character string containing the starting number of the next acceptable passcode previously SMSed to the user.
                    number:
                      type: string
                      description: The phone number of the device
                    type:
                      type: string
                      description: Device type.  Can be either 'phone' or 'token'.
              result:
                type: string
                description: Result of the operation
              message:
                type: string
                description: Message describing the result, suitable for display
externalDocs:
  description: UW-IT Token Authentication Web Service (TAWS) V2 API documentation
  url: https://iam-tools.u.washington.edu/apis/tawsv2/
x-operator: institution
x-provenance:
  method: searched
  source: https://iam-tools.u.washington.edu/apis/tawsv2/tawsv2.yaml
  generated: '2026-08-30'
  note: Fetched verbatim from the UW-IT IAM tools API documentation host on 2026-08-30 (HTTP 200). servers[] resolve to University of Washington registrable domains (uw.edu / washington.edu), so the operator is the institution, not a vendor. Only externalDocs, x-operator and x-provenance were added; info and paths are as published.
  pristine_copy: openapi/_original/university-of-washington-token-authentication-web-service-v2.yaml