Arthur Online
Arthur Notes API

Free-text notes recorded against any Arthur resource, with their own tagging operations. 5 documented paths.
Documentation GitHub OpenAPI
OpenAPI Specification

openapi: 3.1.0
info:
  title: Arthur Notes API
  version: 2.0.0
  description: Arthur Notes API - the notes surface of the Arthur API v2, the UK property management platform
    from Arthur Online (an Aareon company). Derived operation-for-operation from the provider's public
    Postman Documenter collection at https://developer.arthuronline.co.uk/. Every request is scoped to
    an Arthur entity via the mandatory X-EntityID header and authorised with an OAuth 2.0 Authorization
    Code access token.
  contact:
    name: Arthur Online API Support
    url: https://support.arthuronline.co.uk/
  termsOfService: https://www.arthuronline.co.uk/terms-and-conditions/
  x-derived-from: collections/arthur-online.postman_collection.json
  x-derived-by: API Evangelist enrichment pipeline
  x-derived-date: '2026-07-26'
servers:
- url: https://api.arthuronline.co.uk/v2
  description: Arthur API v2 production
security:
- arthurOAuth: []
tags:
- name: Tags
- name: Notes
paths:
  /notes/{note_id}/tags:
    get:
      operationId: listTagsOnNote
      summary: List Tags on Note
      tags:
      - Tags
      parameters:
      - name: note_id
        in: path
        required: true
        description: Arthur note id.
        schema:
          type: integer
      - $ref: '#/components/parameters/EntityId'
      - $ref: '#/components/parameters/Page'
      - $ref: '#/components/parameters/Limit'
      - $ref: '#/components/parameters/Sort'
      - $ref: '#/components/parameters/Direction'
      description: This endpoint retrieves a list of tags associated with the given note ID.
      responses:
        '200':
          description: The request was completed successfully without errors.
          content:
            application/json:
              schema:
                type: object
                properties:
                  status:
                    type: integer
                  data:
                    type: object
              example:
                status: 200
                data:
                - id: 33843
                  name: 1000 spend limit
                  color: blue
                - id: 49572
                  name: benefits lapsed
                  color: blue
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
    put:
      operationId: tagNote
      summary: Tag Note
      tags:
      - Tags
      parameters:
      - name: note_id
        in: path
        required: true
        description: Arthur note id.
        schema:
          type: integer
      - $ref: '#/components/parameters/EntityId'
      - $ref: '#/components/parameters/Strict'
      description: "Use this endpoint to create a new tag record for a  note . The API will return the\
        \ saved data and a unique note ID.\n\nSupported Fields \n The following fields are supported for\
        \ the request body\nTag field should be a valid tag ID or name.\n\nField \n Example \n Type \n\
        \ Required? \n\ntag \n [\"123\"] \n Array(String) \n Yes"
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                tag:
                  type: array
                  items:
                    type: string
                  example: '["123"]'
              required:
              - tag
            example:
              tag:
              - '1234'
      responses:
        '200':
          description: The request was completed successfully without errors.
          content:
            application/json:
              schema:
                type: object
                properties:
                  status:
                    type: integer
                  data:
                    type: object
              example:
                status: 200
                data:
                - id: 1234
                  name: Tag one
                  color: orange
                - id: 123
                  name: Tag two
                  color: purple
                - id: 12
                  name: Tag three
                  color: sky
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  /notes/{note_id}/untag:
    put:
      operationId: untagNote
      summary: Untag Note
      tags:
      - Tags
      parameters:
      - name: note_id
        in: path
        required: true
        description: Arthur note id.
        schema:
          type: integer
      - $ref: '#/components/parameters/EntityId'
      - $ref: '#/components/parameters/Strict'
      description: "Use this endpoint to unassign tag record from the note . The API will return the saved\
        \ data. Tag field should be a valid tag ID or name.\n\nSupported Fields \n The following fields\
        \ are supported for the request body\n\nField \n Example \n Type \n Required? \n\ntag \n \"1234\"\
        \ \n String \n Yes"
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                tag:
                  type: string
                  example: '"1234"'
              required:
              - tag
            example:
              tag: '1234'
      responses:
        '200':
          description: The request was completed successfully without errors.
          content:
            application/json:
              schema:
                type: object
                properties:
                  status:
                    type: integer
                  data:
                    type: object
              example:
                status: 200
                data:
                - id: 123
                  name: Tag two
                  color: purple
                - id: 12
                  name: Tag three
                  color: sky
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  /notes/{note_id}/untag_all:
    put:
      operationId: untagAllNoteTags
      summary: Untag All Note Tags
      tags:
      - Tags
      parameters:
      - name: note_id
        in: path
        required: true
        description: Arthur note id.
        schema:
          type: integer
      - $ref: '#/components/parameters/EntityId'
      - $ref: '#/components/parameters/Strict'
      description: Use this endpoint to unassign all tags from a  note .
      responses:
        '200':
          description: The request was completed successfully without errors.
          content:
            application/json:
              schema:
                type: object
                properties:
                  status:
                    type: integer
                  data:
                    type: object
              example:
                status: 200
                data: []
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  /notes:
    get:
      operationId: listNotes
      summary: List Notes
      tags:
      - Notes
      parameters:
      - $ref: '#/components/parameters/EntityId'
      - $ref: '#/components/parameters/Page'
      - $ref: '#/components/parameters/Limit'
      - $ref: '#/components/parameters/Sort'
      - $ref: '#/components/parameters/Direction'
      description: This endpoint retrieves a list of  notes  .
      responses:
        '200':
          description: The request was completed successfully without errors.
          content:
            application/json:
              schema:
                type: object
                properties:
                  status:
                    type: integer
                  data:
                    type: array
                    items:
                      type: object
                  pagination:
                    $ref: '#/components/schemas/Pagination'
              example:
                status: 200
                data:
                - id: 123
                  content: Remember this note
                  created_by:
                    id: 123
                    full_name: Ronnie Wilson
                  last_edited_by:
                    id: null
                    full_name: null
                  last_edited_date: '2020-05-28T11:57:56+01:00'
                  tags: []
                  property_id: 123
                  unit_id: 123
                  tenancy_id: 123
                  created: '2020-05-28T11:57:55+01:00'
                  modified: '2020-05-28T11:57:55+01:00'
                - id: 1234
                  content: Remember this note , please
                  created_by:
                    id: 123
                    full_name: Ronnie Wilson
                  last_edited_by:
                    id: 123
                    full_name: Ronnie Wilson
                  last_edited_date: '2020-05-28T11:57:56+01:00'
                  tags: []
                  property_id: 123
                  unit_id: 123
                  tenancy_id: null
                  created: '2020-05-28T11:57:55+01:00'
                  modified: '2020-05-28T11:57:55+01:00'
                pagination:
                  page: 1
                  current: 1
                  count: 2
                  pageCount: 1
                  limit: 20
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  /notes/{note_id}:
    get:
      operationId: viewNote
      summary: View Note
      tags:
      - Notes
      parameters:
      - name: note_id
        in: path
        required: true
        description: Arthur note id.
        schema:
          type: integer
      - $ref: '#/components/parameters/EntityId'
      description: This API endpoint retrieves the details of a single  note , identified by its unique 
        id .
      responses:
        '200':
          description: The request was completed successfully without errors.
          content:
            application/json:
              schema:
                type: object
                properties:
                  status:
                    type: integer
                  data:
                    type: object
              example:
                status: 200
                data:
                  id: 123
                  content: Remember this note
                  created_by:
                    id: 123
                    full_name: Ronnie Wilson
                  last_edited_by:
                    id: 123
                    full_name: Ronnie Wilson
                  last_edited_date: '2020-05-28T11:57:56+01:00'
                  tags: []
                  property_id: 123
                  unit_id: 123
                  tenancy_id: 123
                  created: '2020-05-28T11:57:55+01:00'
                  modified: '2020-05-28T11:57:55+01:00'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
    put:
      operationId: updateNote
      summary: Update Note
      tags:
      - Notes
      parameters:
      - name: note_id
        in: path
        required: true
        description: Arthur note id.
        schema:
          type: integer
      - $ref: '#/components/parameters/EntityId'
      - $ref: '#/components/parameters/Strict'
      description: "This endpoint updates an existing note using the same fields. The API will return\
        \ the updated data for the note in the response.\n\nSupported Fields \n The following fields are\
        \ supported for the request body\n\nField \n Example \n Type \n Required? \n\ncontent \n Moving\
        \ away \n String \n No"
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                content:
                  type: string
                  example: Moving away
      responses:
        '200':
          description: The request was completed successfully without errors.
          content:
            application/json:
              schema:
                type: object
                properties:
                  status:
                    type: integer
                  data:
                    type: object
              example:
                status: 200
                data:
                  id: 123
                  content: Remember this note
                  created_by:
                    id: 123
                    full_name: Ronnie Wilson
                  last_edited_by:
                    id: null
                    full_name: null
                  last_edited_date: '2020-05-28T11:57:56+01:00'
                  tags:
                  - one
                  - two
                  property_id: 123
                  unit_id: 123
                  tenancy_id: null
                  created: '2020-05-28T11:57:55+01:00'
                  modified: '2020-05-28T11:57:55+01:00'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
    delete:
      operationId: deleteNote
      summary: Delete Note
      tags:
      - Notes
      parameters:
      - name: note_id
        in: path
        required: true
        description: Arthur note id.
        schema:
          type: integer
      - $ref: '#/components/parameters/EntityId'
      description: This endpoint deletes an existing note using the note  id .
      responses:
        '200':
          description: The request was completed successfully without errors.
          content:
            application/json:
              schema:
                type: object
                properties:
                  status:
                    type: integer
                  data:
                    type: object
              example:
                status: 200
                data: []
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
components:
  securitySchemes:
    arthurOAuth:
      type: oauth2
      description: OAuth 2.0 Authorization Code flow. Access tokens are valid for 14 days; refresh tokens
        for 21 days. Register an application in Arthur Settings > OAuth Applications to obtain a client_id
        and client_secret.
      flows:
        authorizationCode:
          authorizationUrl: https://auth.arthuronline.co.uk/oauth/authorize
          tokenUrl: https://auth.arthuronline.co.uk/oauth/token
          refreshUrl: https://auth.arthuronline.co.uk/oauth/token
          scopes: {}
  parameters:
    EntityId:
      name: X-EntityID
      in: header
      required: true
      description: The Arthur entity (account) the request is scoped to. Mandatory on every API call.
      schema:
        type: string
    Page:
      name: page
      in: query
      required: false
      description: Page number, between 1 and the total number of pages.
      schema:
        type: integer
        minimum: 1
    Limit:
      name: limit
      in: query
      required: false
      description: Items per page, between 1 and 100.
      schema:
        type: integer
        minimum: 1
        maximum: 100
    Sort:
      name: sort
      in: query
      required: false
      description: Field to sort the collection by.
      schema:
        type: string
    Direction:
      name: direction
      in: query
      required: false
      description: Sort direction.
      schema:
        type: string
        enum:
        - ASC
        - DESC
    Strict:
      name: strict
      in: query
      required: false
      description: When true, abort the request instead of auto-creating an unknown Simple type. POST
        and PUT only.
      schema:
        type: boolean
  schemas:
    Pagination:
      type: object
      description: Pagination block returned on every list response.
      properties:
        page:
          type: integer
        current:
          type: integer
        count:
          type: integer
        pageCount:
          type: integer
        limit:
          type: integer
    Error:
      type: object
      description: Arthur error envelope.
      properties:
        status:
          type: integer
        error:
          type: string
          description: Machine-readable error code, e.g. expired_token.
        message:
          type: string
  responses:
    BadRequest:
      description: The request was invalid or malformed.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    Unauthorized:
      description: Missing, invalid or expired access token.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
          example:
            error: expired_token
            message: This token has expired.
    NotFound:
      description: The request was sent to a location that does not exist in the API.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
Arthur Notes API

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