Cliniko Invoices API

openapi: 3.0.3
info:
  title: Cliniko API
  description: >-
    Cliniko is practice management software for allied health practices and
    clinics. This is a representative subset of the public Cliniko REST API,
    grounded in the official documentation at https://docs.api.cliniko.com and
    the redguava/cliniko-api GitHub repository. It is not the complete surface -
    Cliniko documents 50+ resources (appointment types, attendees, availability
    blocks, billable items, bookings, businesses, communications, concession
    types, contacts, group appointments, individual appointments, invoices,
    invoice items, medical alerts, patients, patient attachments, patient cases,
    patient forms, practitioners, products, recalls, referral sources, services,
    settings, stock adjustments, taxes, treatment notes, users, and more).

    Base URL is region-sharded. The shard is the suffix on your API key (for
    example a key ending `-uk1` is served from `https://api.uk1.cliniko.com`);
    keys with no suffix belong to the `au1` shard. All paths are prefixed with
    `/v1`.

    Authentication is HTTP Basic: the API key is the username and the password
    is empty (`-u API_KEY:`). Every request MUST also send an `Accept:
    application/json` header and a `User-Agent` header of the form
    `APP_VENDOR_NAME (APP_VENDOR_EMAIL)` containing a valid contact email, or
    requests may be automatically blocked. Requests are rate limited to 200 per
    minute per user; a `429` response includes an `X-RateLimit-Reset` header
    with a UNIX timestamp.

    Modeled note - the field sets below are drawn from the documented example
    responses; some optional attributes may be omitted, and request-body schemas
    are representative rather than exhaustive.
  version: v1
  contact:
    name: Cliniko API Support
    url: https://docs.api.cliniko.com/
  license:
    name: Proprietary
    url: https://www.cliniko.com/terms/
servers:
  - url: https://api.{shard}.cliniko.com/v1
    description: Cliniko region-sharded API. The shard is the suffix on your API key.
    variables:
      shard:
        default: au1
        enum:
          - au1
          - au2
          - au3
          - au4
          - uk1
          - eu1
          - us1
          - ca1
        description: >-
          Region shard derived from the API key suffix. Keys without a suffix
          use au1.
security:
  - basicAuth: []
tags:
  - name: Patients
    description: The people who book in for appointments.
  - name: Appointments
    description: Individual appointments and the unified bookings feed.
  - name: Practitioners
    description: Practitioners and the businesses (locations) they work from.
  - name: Businesses
    description: Businesses / physical locations in a Cliniko account.
  - name: Appointment Types
    description: The named services a clinic offers.
  - name: Invoices
    description: Patient and appointment invoices.
  - name: Treatment Notes
    description: Structured clinical notes about a patient visit.
paths:
  /patients:
    parameters:
      - $ref: '#/components/parameters/UserAgent'
    get:
      operationId: listPatients
      tags:
        - Patients
      summary: Get patients
      description: Returns a paginated list of all patients.
      parameters:
        - $ref: '#/components/parameters/Page'
        - $ref: '#/components/parameters/PerPage'
        - $ref: '#/components/parameters/Query'
      responses:
        '200':
          description: A paginated list of patients.
          content:
            application/json:
              schema:
                type: object
                properties:
                  patients:
                    type: array
                    items:
                      $ref: '#/components/schemas/Patient'
                  total_entries:
                    type: integer
                  links:
                    $ref: '#/components/schemas/Links'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '429':
          $ref: '#/components/responses/RateLimited'
    post:
      operationId: createPatient
      tags:
        - Patients
      summary: Create patient
      description: Creates a new patient.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/PatientInput'
      responses:
        '201':
          description: The created patient.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Patient'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '422':
          $ref: '#/components/responses/UnprocessableEntity'
  /patients/{id}:
    parameters:
      - $ref: '#/components/parameters/UserAgent'
      - $ref: '#/components/parameters/Id'
    get:
      operationId: getPatient
      tags:
        - Patients
      summary: Get patient
      description: Returns a single patient by ID.
      responses:
        '200':
          description: The requested patient.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Patient'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
    patch:
      operationId: updatePatient
      tags:
        - Patients
      summary: Update patient
      description: Updates an existing patient.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/PatientInput'
      responses:
        '200':
          description: The updated patient.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Patient'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
        '422':
          $ref: '#/components/responses/UnprocessableEntity'
  /patients/{id}/archive:
    parameters:
      - $ref: '#/components/parameters/UserAgent'
      - $ref: '#/components/parameters/Id'
    post:
      operationId: archivePatient
      tags:
        - Patients
      summary: Archive patient
      description: Archives a patient.
      responses:
        '200':
          description: The archived patient.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Patient'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  /patients/{id}/unarchive:
    parameters:
      - $ref: '#/components/parameters/UserAgent'
      - $ref: '#/components/parameters/Id'
    post:
      operationId: unarchivePatient
      tags:
        - Patients
      summary: Unarchive patient
      description: Unarchives a previously archived patient.
      responses:
        '200':
          description: The unarchived patient.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Patient'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  /individual_appointments:
    parameters:
      - $ref: '#/components/parameters/UserAgent'
    get:
      operationId: listIndividualAppointments
      tags:
        - Appointments
      summary: Get individual appointments
      description: Returns a paginated list of individual appointments.
      parameters:
        - $ref: '#/components/parameters/Page'
        - $ref: '#/components/parameters/PerPage'
      responses:
        '200':
          description: A paginated list of individual appointments.
          content:
            application/json:
              schema:
                type: object
                properties:
                  individual_appointments:
                    type: array
                    items:
                      $ref: '#/components/schemas/IndividualAppointment'
                  total_entries:
                    type: integer
                  links:
                    $ref: '#/components/schemas/Links'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '429':
          $ref: '#/components/responses/RateLimited'
    post:
      operationId: createIndividualAppointment
      tags:
        - Appointments
      summary: Create individual appointment
      description: Books a new individual appointment.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/IndividualAppointmentInput'
      responses:
        '201':
          description: The created appointment.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/IndividualAppointment'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '422':
          $ref: '#/components/responses/UnprocessableEntity'
  /individual_appointments/{id}:
    parameters:
      - $ref: '#/components/parameters/UserAgent'
      - $ref: '#/components/parameters/Id'
    get:
      operationId: getIndividualAppointment
      tags:
        - Appointments
      summary: Get individual appointment
      description: Returns a single individual appointment by ID.
      responses:
        '200':
          description: The requested appointment.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/IndividualAppointment'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
    patch:
      operationId: updateIndividualAppointment
      tags:
        - Appointments
      summary: Update individual appointment
      description: Updates an existing individual appointment.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/IndividualAppointmentInput'
      responses:
        '200':
          description: The updated appointment.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/IndividualAppointment'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
        '422':
          $ref: '#/components/responses/UnprocessableEntity'
  /individual_appointments/{id}/cancel:
    parameters:
      - $ref: '#/components/parameters/UserAgent'
      - $ref: '#/components/parameters/Id'
    patch:
      operationId: cancelIndividualAppointment
      tags:
        - Appointments
      summary: Cancel individual appointment
      description: Cancels an individual appointment, optionally with a cancellation reason.
      requestBody:
        required: false
        content:
          application/json:
            schema:
              type: object
              properties:
                cancellation_reason:
                  type: integer
                  description: Numeric cancellation reason code.
                cancellation_note:
                  type: string
      responses:
        '200':
          description: The cancelled appointment.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/IndividualAppointment'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  /individual_appointments/{id}/conflicts:
    parameters:
      - $ref: '#/components/parameters/UserAgent'
      - $ref: '#/components/parameters/Id'
    get:
      operationId: getIndividualAppointmentConflicts
      tags:
        - Appointments
      summary: Get appointment conflicts
      description: Returns whether the specified individual appointment has scheduling conflicts.
      responses:
        '200':
          description: Conflict information for the appointment.
          content:
            application/json:
              schema:
                type: object
                properties:
                  conflicts:
                    type: array
                    items:
                      type: object
                      additionalProperties: true
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  /bookings:
    parameters:
      - $ref: '#/components/parameters/UserAgent'
    get:
      operationId: listBookings
      tags:
        - Appointments
      summary: Get bookings
      description: >-
        Returns a paginated list of bookings. Bookings is a convenience feed
        that can return group appointments, individual appointments, and
        unavailable blocks; the shape of each object depends on its type.
      parameters:
        - $ref: '#/components/parameters/Page'
        - $ref: '#/components/parameters/PerPage'
      responses:
        '200':
          description: A paginated list of bookings.
          content:
            application/json:
              schema:
                type: object
                properties:
                  bookings:
                    type: array
                    items:
                      $ref: '#/components/schemas/Booking'
                  total_entries:
                    type: integer
                  links:
                    $ref: '#/components/schemas/Links'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /bookings/{id}:
    parameters:
      - $ref: '#/components/parameters/UserAgent'
      - $ref: '#/components/parameters/Id'
    get:
      operationId: getBooking
      tags:
        - Appointments
      summary: Get booking
      description: Returns a single booking by ID.
      responses:
        '200':
          description: The requested booking.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Booking'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  /practitioners:
    parameters:
      - $ref: '#/components/parameters/UserAgent'
    get:
      operationId: listPractitioners
      tags:
        - Practitioners
      summary: Get practitioners
      description: Returns a paginated list of all active practitioners.
      parameters:
        - $ref: '#/components/parameters/Page'
        - $ref: '#/components/parameters/PerPage'
      responses:
        '200':
          description: A paginated list of practitioners.
          content:
            application/json:
              schema:
                type: object
                properties:
                  practitioners:
                    type: array
                    items:
                      $ref: '#/components/schemas/Practitioner'
                  total_entries:
                    type: integer
                  links:
                    $ref: '#/components/schemas/Links'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /practitioners/{id}:
    parameters:
      - $ref: '#/components/parameters/UserAgent'
      - $ref: '#/components/parameters/Id'
    get:
      operationId: getPractitioner
      tags:
        - Practitioners
      summary: Get practitioner
      description: Returns a single practitioner by ID.
      responses:
        '200':
          description: The requested practitioner.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Practitioner'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  /businesses:
    parameters:
      - $ref: '#/components/parameters/UserAgent'
    get:
      operationId: listBusinesses
      tags:
        - Businesses
      summary: Get businesses
      description: Returns a paginated list of all businesses (locations).
      parameters:
        - $ref: '#/components/parameters/Page'
        - $ref: '#/components/parameters/PerPage'
      responses:
        '200':
          description: A paginated list of businesses.
          content:
            application/json:
              schema:
                type: object
                properties:
                  businesses:
                    type: array
                    items:
                      $ref: '#/components/schemas/Business'
                  total_entries:
                    type: integer
                  links:
                    $ref: '#/components/schemas/Links'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /businesses/{id}:
    parameters:
      - $ref: '#/components/parameters/UserAgent'
      - $ref: '#/components/parameters/Id'
    get:
      operationId: getBusiness
      tags:
        - Businesses
      summary: Get business
      description: Returns a single business by ID.
      responses:
        '200':
          description: The requested business.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Business'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  /appointment_types:
    parameters:
      - $ref: '#/components/parameters/UserAgent'
    get:
      operationId: listAppointmentTypes
      tags:
        - Appointment Types
      summary: Get appointment types
      description: Returns a paginated list of all appointment types.
      parameters:
        - $ref: '#/components/parameters/Page'
        - $ref: '#/components/parameters/PerPage'
      responses:
        '200':
          description: A paginated list of appointment types.
          content:
            application/json:
              schema:
                type: object
                properties:
                  appointment_types:
                    type: array
                    items:
                      $ref: '#/components/schemas/AppointmentType'
                  total_entries:
                    type: integer
                  links:
                    $ref: '#/components/schemas/Links'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /appointment_types/{id}:
    parameters:
      - $ref: '#/components/parameters/UserAgent'
      - $ref: '#/components/parameters/Id'
    get:
      operationId: getAppointmentType
      tags:
        - Appointment Types
      summary: Get appointment type
      description: Returns a single appointment type by ID.
      responses:
        '200':
          description: The requested appointment type.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AppointmentType'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  /invoices:
    parameters:
      - $ref: '#/components/parameters/UserAgent'
    get:
      operationId: listInvoices
      tags:
        - Invoices
      summary: Get invoices
      description: >-
        Returns a paginated list of invoices. Supports filtering by issue_date,
        number, and status via the `q[]` query parameter.
      parameters:
        - $ref: '#/components/parameters/Page'
        - $ref: '#/components/parameters/PerPage'
        - name: q[]
          in: query
          required: false
          description: >-
            Filter expression, e.g. `q[]=issue_date:>=2015-01-01` or
            `q[]=status:=10`. Repeatable.
          schema:
            type: array
            items:
              type: string
      responses:
        '200':
          description: A paginated list of invoices.
          content:
            application/json:
              schema:
                type: object
                properties:
                  invoices:
                    type: array
                    items:
                      $ref: '#/components/schemas/Invoice'
                  total_entries:
                    type: integer
                  links:
                    $ref: '#/components/schemas/Links'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /invoices/{id}:
    parameters:
      - $ref: '#/components/parameters/UserAgent'
      - $ref: '#/components/parameters/Id'
    get:
      operationId: getInvoice
      tags:
        - Invoices
      summary: Get invoice
      description: Returns a single invoice by ID.
      responses:
        '200':
          description: The requested invoice.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Invoice'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  /treatment_notes:
    parameters:
      - $ref: '#/components/parameters/UserAgent'
    get:
      operationId: listTreatmentNotes
      tags:
        - Treatment Notes
      summary: Get treatment notes
      description: Returns a paginated list of treatment notes.
      parameters:
        - $ref: '#/components/parameters/Page'
        - $ref: '#/components/parameters/PerPage'
      responses:
        '200':
          description: A paginated list of treatment notes.
          content:
            application/json:
              schema:
                type: object
                properties:
                  treatment_notes:
                    type: array
                    items:
                      $ref: '#/components/schemas/TreatmentNote'
                  total_entries:
                    type: integer
                  links:
                    $ref: '#/components/schemas/Links'
        '401':
          $ref: '#/components/responses/Unauthorized'
    post:
      operationId: createTreatmentNote
      tags:
        - Treatment Notes
      summary: Create treatment note
      description: Creates a treatment note for a patient, based on a treatment note template.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/TreatmentNoteInput'
      responses:
        '201':
          description: The created treatment note.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/TreatmentNote'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '422':
          $ref: '#/components/responses/UnprocessableEntity'
  /treatment_notes/{id}:
    parameters:
      - $ref: '#/components/parameters/UserAgent'
      - $ref: '#/components/parameters/Id'
    get:
      operationId: getTreatmentNote
      tags:
        - Treatment Notes
      summary: Get treatment note
      description: Returns a single treatment note by ID.
      responses:
        '200':
          description: The requested treatment note.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/TreatmentNote'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
components:
  securitySchemes:
    basicAuth:
      type: http
      scheme: basic
      description: >-
        HTTP Basic authentication. The API key is the username and the password
        is left empty (curl: `-u API_KEY:`). The shard suffix on the key selects
        the base host.
  parameters:
    UserAgent:
      name: User-Agent
      in: header
      required: true
      description: >-
        Must be of the form `APP_VENDOR_NAME (APP_VENDOR_EMAIL)` and include a
        valid contact email. Requests without a compliant User-Agent may be
        automatically blocked.
      schema:
        type: string
        example: MyClinicApp (dev@myclinic.example)
    Id:
      name: id
      in: path
      required: true
      description: The unique identifier of the resource.
      schema:
        type: string
    Page:
      name: page
      in: query
      required: false
      description: Page number (pagination).
      schema:
        type: integer
        default: 1
    PerPage:
      name: per_page
      in: query
      required: false
      description: Items per page. Default 50, maximum 100.
      schema:
        type: integer
        default: 50
        maximum: 100
    Query:
      name: q[]
      in: query
      required: false
      description: Optional filter expression(s). Repeatable.
      schema:
        type: array
        items:
          type: string
  responses:
    Unauthorized:
      description: Missing or invalid credentials.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    NotFound:
      description: The requested resource was not found.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    UnprocessableEntity:
      description: The request payload failed validation.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    RateLimited:
      description: >-
        Too many requests. The API is limited to 200 requests per minute per
        user. The X-RateLimit-Reset header carries a UNIX timestamp for when the
        window resets.
      headers:
        X-RateLimit-Reset:
          description: UNIX timestamp when the rate-limit window resets.
          schema:
            type: integer
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  schemas:
    Links:
      type: object
      description: HAL-style pagination and self links.
      properties:
        self:
          type: string
          format: uri
        next:
          type: string
          format: uri
        previous:
          type: string
          format: uri
    Reference:
      type: object
      description: A link to a related resource.
      properties:
        links:
          type: object
          properties:
            self:
              type: string
              format: uri
    Error:
      type: object
      properties:
        message:
          type: string
        errors:
          type: object
          additionalProperties: true
    PatientPhoneNumber:
      type: object
      properties:
        phone_type:
          type: string
          example: Mobile
        number:
          type: string
          example: '61444444444'
    Patient:
      type: object
      properties:
        id:
          type: string
        title:
          type: string
        first_name:
          type: string
        last_name:
          type: string
        preferred_first_name:
          type: string
        email:
          type: string
        date_of_birth:
          type: string
          format: date
        gender:
          type: string
        gender_identity:
          type: string
        pronouns:
          type: string
          nullable: true
        address_1:
          type: string
        address_2:
          type: string
        address_3:
          type: string
        city:
          type: string
        state:
          type: string
        post_code:
          type: string
        country:
          type: string
        occupation:
          type: string
        notes:
          type: string
        appointment_notes:
          type: string
        accepted_privacy_policy:
          type: boolean
          nullable: true
          description: null (no response), true (accepted), or false (rejected).
        accepted_email_marketing:
          type: boolean
          nullable: true
        accepted_sms_marketing:
          type: boolean
          nullable: true
        receives_confirmation_emails:
          type: boolean
        reminder_type:
          type: string
        time_zone:
          type: string
          nullable: true
          description: A valid IANA time zone identifier, or null.
        patient_phone_numbers:
          type: array
          items:
            $ref: '#/components/schemas/PatientPhoneNumber'
        custom_fields:
          type: object
          additionalProperties: true
        archived_at:
          type: string
          format: date-time
          nullable: true
        created_at:
          type: string
          format: date-time
        updated_at:
          type: string
          format: date-time
        appointments:
          $ref: '#/components/schemas/Reference'
        invoices:
          $ref: '#/components/schemas/Reference'
        medical_alerts:
          $ref: '#/components/schemas/Reference'
        links:
          $ref: '#/components/schemas/Links'
    PatientInput:
      type: object
      required:
        - first_name
        - last_name
      properties:
        title:
          type: string
        first_name:
          type: string
        last_name:
          type: string
        preferred_first_name:
          type: string
        email:
          type: string
        date_of_birth:
          type: string
          format: date
        address_1:
          type: string
        city:
          type: string
        state:
          type: string
        post_code:
          type: string
        country:
          type: string
        time_zone:
          type: string
          description: An IANA time zone identifier.
        accepted_privacy_policy:
          type: boolean
          nullable: true
    IndividualAppointment:
      type: object
      properties:
        id:
          type: integer
        starts_at:
          type: string
          format: date-time
        ends_at:
          type: string
          format: date-time
        patient_name:
          type: string
        notes:
          type: string
          nullable: true
        did_not_arrive:
          type: boolean
        patient_arrived:
          type: boolean
        email_reminder_sent:
          type: boolean
        sms_reminder_sent:
          type: boolean
        cancelled_at:
          type: string
          format: date-time
          nullable: true
        cancellation_note:
          type: string
          nullable: true
        cancellation_reason:
          type: integer
          nullable: true
        cancellation_reason_description:
          type: string
        invoice_status:
          type: integer
          nullable: true
        treatment_note_status:
          type: integer
          nullable: true
        repeat_rule:
          type: object
          additionalProperties: true
        repeats:
          type: string
          nullable: true
        deleted_at:
          type: string
          format: date-time
          nullable: true
        created_at:
          type: string
          format: date-time
        updated_at:
          type: string
          format: date-time
        appointment_type:
          $ref: '#/components/schemas/Reference'
        business:
          $ref: '#/components/schemas/Reference'
        practitioner:
          $ref: '#/components/schemas/Reference'
        patient:
          $ref: '#/components/schemas/Reference'
        conflicts:
          $ref: '#/components/schemas/Reference'
        links:
          $ref: '#/components/schemas/Links'
    IndividualAppointmentInput:
      type: object
      required:
        - starts_at
        - ends_at
        - patient_id
        - practitioner_id
        - business_id
        - appointment_type_id
      properties:
        starts_at:
          type: string
          format: date-time
        ends_at:
          type: string
          format: date-time
        patient_id:
          type: string
        practitioner_id:
          type: string
        business_id:
          type: string
        appointment_type_id:
          type: string
        notes:
          type: string
    Booking:
      type: object
      description: >-
        A booking may represent an individual appointment, a group appointment,
        or an unavailable block; fields present vary by type.
      properties:
        id:
          type: integer
        starts_at:
          type: string
          format: date-time
        ends_at:
          type: string
          format: date-time
        notes:
          type: string
          nul

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# Full source: https://raw.githubusercontent.com/api-evangelist/cliniko/refs/heads/main/openapi/cliniko-openapi.yml