Arthur Online

Arthur Online is a London-headquartered UK property management software platform, founded in 2008 and acquired by Aareon in January 2021, that gives letting agents, self-managing landlords, block and social housing managers, and student accommodation operators a cloud system of record for properties, units, tenancies, tenants, applicants, viewings, maintenance work orders, certificates, utilities and rental financials, with companion mobile apps for managers, tenants, contractors and owners. It sits in the middle of the UK residential lettings value chain: it is the agency-side operational system that pushes stock out to the Rightmove and Zoopla portals and pulls accounting into Xero and QuickBooks, rather than a listings marketplace or a data cooperative. Its API posture is unusually open for the sector but is not open data: the full Arthur API v2 reference is published without a login as a public Postman collection at developer.arthuronline.co.uk covering 324 documented requests across 16 resource areas, yet every call is tenant-scoped OAuth 2.0 Authorization Code plus an X-EntityID header, credentials are issued only from inside a paying Arthur account after contacting Arthur support, and no data is readable anonymously. There is no RESO posture at all — the United Kingdom has no MLS, no NAR, and no RESO Data Dictionary or Web API certification regime, so listings interoperability here is portal-to-CRM feeds rather than a certified machine-readable standard.

Arthur Online publishes 16 APIs on the APIs.io network, including Arthur Properties API, Arthur Units API, Arthur Tenancies API, and 13 more. Tagged areas include Real Estate, United Kingdom, Property Management, PropTech, and Rentals.

The Arthur Online catalog on APIs.io includes 2 event-driven AsyncAPI specifications.

Arthur Online’s developer surface includes authentication, developer portal, documentation, API reference, signup flow, support, engineering blog, and 31 more developer resources.

🌐 Visit website 📡 Source on GitHub
63.6/100 strong ▬ flat Agent 85/100 agent native Full breakdown ↓
scored 2026-07-27 · rubric v0.5
16 APIs 1 MCP Servers
Real EstateUnited KingdomProperty ManagementPropTechRentalsLettingsTenancyMaintenanceProperty ListingsSocial HousingStudent HousingBlock Management

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 63.6/100 · strong
Contract Quality 18.0 / 25
Developer Ergonomics 14.3 / 20
Commercial Clarity 15.3 / 20
Operational Transparency 4.4 / 13
Governance 1.6 / 12
Discoverability 10.0 / 10
Agent readiness — 85/100 · agent native
Machine-Readable Contract 18 / 18
Agentic Access Contract 15 / 15
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 7 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 6 / 6
Agent Skills 5 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/arthur-online: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 16

Individual APIs this provider publishes, each with its own machine-readable definition.

Arthur Properties API

Property records and everything hung off a property in Arthur - assets, certificates, conversations, general information, notes, units, tenancies, tasks, work orders, utilities,...

Arthur Units API

Individual lettable units beneath a property, plus the unit-level assets, certificates, conversations, notes, viewings, tenancies, tasks, work orders, utilities, transactions an...

Arthur Tenancies API

Tenancy agreements over a unit, including tenants on the tenancy, deposit registration, recurring charges, certificates, tasks, work orders, conversations, transactions, notes a...

Arthur Tenants API

Tenant people records - list, view, create and update tenants, and invite a tenant into the Arthur tenant portal. 3 documented paths.

Arthur Applicants API

Prospective renters moving through the lettings funnel, including applicant status, credit checks, managers, assets, conversations, notes, tasks and tags. 15 documented paths.

Arthur Viewings API

Property and unit viewing appointments, the applicants attached to each viewing, assigned managers, conversations, notes and tags. 15 documented paths.

Arthur Maintenance API

The largest surface in the API - tasks, subtasks, work orders, quotes and the contractor workflow around them. 45 documented paths.

Arthur Financials API

Rental financials - invoices, transactions, transaction payoff and recurring charges. Read and update only; no create operations are documented. 6 documented paths.

Arthur Assets API

Files and documents stored in Arthur and shared with owners, tenants and contractors. 2 documented paths.

Arthur Utilities API

Utility accounts attached to properties and units, and the meter readings recorded against them. 4 documented paths.

Arthur Certificates API

Compliance certificates - gas safety, electrical, EPC and similar - with expiry tracking that also drives webhook events at 30 days, 7 days and on the day. 2 documented paths.

Arthur Entities API

Arthur entities - the account boundary that every API call must name in the mandatory X-EntityID request header. 2 documented paths.

Arthur Conversations API

Threaded conversations and messages between managers, tenants, owners and contractors, with attached assets. 4 documented paths.

Arthur Tags API

Cross-cutting tags applied to properties, units, tenancies, applicants, viewings and notes, with tag and untag operations on each resource. 2 documented paths.

Arthur Notes API

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

Arthur Types API

Read-only reference vocabularies backing every enumerated field in Arthur - access detail types, applicant statuses and types, area types, asset types, certificate types, citize...

Scroll for all 16

Arazzo Workflows 4

Multi-step API workflows described with the Arazzo specification.

_Index

ARAZZO

Arthur Online - applicant to tenancy

The UK lettings funnel in Arthur Online: confirm the entity, create an applicant, book a viewing on a unit, record the offer, convert the viewing into a tenancy, add the tenant ...

ARAZZO

Arthur Online - maintenance dispatch

Raise a maintenance task against a property, break it into subtasks, dispatch it to a contractor as a work order, open the conversation and read back quotes and invoices. Approv...

ARAZZO

Arthur Online - onboard a property

Bring a new building into Arthur Online: create the property, add a lettable unit, file the compliance certificate, publish the information shared with occupants and attach the ...

ARAZZO

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

arthur-online-mcp.yml

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Arthur Online Plans

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Arthur Online Rate Limits

1 limits

RATE LIMITS

Event Specifications 2

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Arthur Online Webhooks

The Arthur Online webhook event surface. A property manager subscribes a webhook URL to one or more of the 125 published triggers on the Arthur webhook page; Arthur then POSTs a...

ASYNCAPI

Arthur Online Webhooks

ASYNCAPI

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Arthur Online Authentication

oauth2 · 1 scheme

SECURITY

Arthur Online Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Arthur Online Agentic Access

317 operations · 137 acting

317 operations · 137 acting

AGENTIC

Resources

Get Started 6

Portal, sign-up, and the first successful call

Portal
Portal
 Signup
Signup
 DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 SignUp
SignUp
 Login
Login

Documentation 3

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference
 AsyncAPI
AsyncAPI

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess
 LLMsTxt
LLMsTxt
 MCPServer
MCPServer
 AgentSkill
AgentSkill

Design & Contract 8

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 ErrorCatalog
ErrorCatalog
 Lifecycle
Lifecycle
 Conformance
Conformance
 DataModel
DataModel
 Vocabulary
Vocabulary
 Arazzo
Arazzo
 Webhooks
Webhooks

Scroll for all 8

Build 6

SDKs, sample code, and the tooling you integrate with

PostmanCollection
PostmanCollection
 Postman
Postman
 GitHubOrganization
GitHubOrganization
 Packages
Packages
 ToolCrosswalk
ToolCrosswalk
 Examples
Examples

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 3

Status, limits, changes, and where to get help

Support
Support
 HelpCenter
HelpCenter
 RateLimits
RateLimits

Commercial 4

Pricing, plans, and the legal terms of use

PrivacyPolicy
PrivacyPolicy
 TermsOfService
TermsOfService
 Pricing
Pricing
 Plans
Plans

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: arthur-online
url: https://raw.githubusercontent.com/api-evangelist/arthur-online/refs/heads/main/apis.yml
name: Arthur Online
kind: company
description: 'Arthur Online is a London-headquartered UK property management software platform, founded in 2008 and acquired
  by Aareon in January 2021, that gives letting agents, self-managing landlords, block and social housing managers, and student
  accommodation operators a cloud system of record for properties, units, tenancies, tenants, applicants, viewings, maintenance
  work orders, certificates, utilities and rental financials, with companion mobile apps for managers, tenants, contractors
  and owners. It sits in the middle of the UK residential lettings value chain: it is the agency-side operational system that
  pushes stock out to the Rightmove and Zoopla portals and pulls accounting into Xero and QuickBooks, rather than a listings
  marketplace or a data cooperative. Its API posture is unusually open for the sector but is not open data: the full Arthur
  API v2 reference is published without a login as a public Postman collection at developer.arthuronline.co.uk covering 324
  documented requests across 16 resource areas, yet every call is tenant-scoped OAuth 2.0 Authorization Code plus an X-EntityID
  header, credentials are issued only from inside a paying Arthur account after contacting Arthur support, and no data is
  readable anonymously. There is no RESO posture at all — the United Kingdom has no MLS, no NAR, and no RESO Data Dictionary
  or Web API certification regime, so listings interoperability here is portal-to-CRM feeds rather than a certified machine-readable
  standard.'
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/arthur-online.png
tags:
- Real Estate
- United Kingdom
- Property Management
- PropTech
- Rentals
- Lettings
- Tenancy
- Maintenance
- Property Listings
- Social Housing
- Student Housing
- Block Management
created: '2026-07-26'
modified: '2026-07-26'
specificationVersion: '0.19'
apis:
- aid: arthur-online:arthur-properties-api
  name: Arthur Properties API
  description: Property records and everything hung off a property in Arthur - assets, certificates, conversations, general
    information, notes, units, tenancies, tasks, work orders, utilities, transactions and tags. 20 documented paths across
    GET, POST, PUT and DELETE.
  humanURL: https://developer.arthuronline.co.uk/
  baseURL: https://api.arthuronline.co.uk/v2
  tags:
  - Properties
  - Real Estate
  - Property Records
  properties:
  - type: Documentation
    url: https://developer.arthuronline.co.uk/
  - type: APIReference
    url: https://developer.arthuronline.co.uk/
  - type: PostmanCollection
    url: collections/arthur-online.postman_collection.json
  - type: Authentication
    url: authentication/arthur-online-authentication.yml
  - type: Webhooks
    url: asyncapi/arthur-online-webhooks.yml
  - type: OpenAPI
    url: openapi/arthur-online-properties-openapi.yml
  - type: Overlay
    url: overlays/arthur-online-properties-overlay.yaml
  - type: AsyncAPI
    url: asyncapi/arthur-online-webhooks-asyncapi.yml
- aid: arthur-online:arthur-units-api
  name: Arthur Units API
  description: Individual lettable units beneath a property, plus the unit-level assets, certificates, conversations, notes,
    viewings, tenancies, tasks, work orders, utilities, transactions and tags. 22 documented paths.
  humanURL: https://developer.arthuronline.co.uk/
  baseURL: https://api.arthuronline.co.uk/v2
  tags:
  - Units
  - Real Estate
  - Inventory
  properties:
  - type: Documentation
    url: https://developer.arthuronline.co.uk/
  - type: APIReference
    url: https://developer.arthuronline.co.uk/
  - type: PostmanCollection
    url: collections/arthur-online.postman_collection.json
  - type: Authentication
    url: authentication/arthur-online-authentication.yml
  - type: Webhooks
    url: asyncapi/arthur-online-webhooks.yml
  - type: OpenAPI
    url: openapi/arthur-online-units-openapi.yml
  - type: Overlay
    url: overlays/arthur-online-units-overlay.yaml
  - type: AsyncAPI
    url: asyncapi/arthur-online-webhooks-asyncapi.yml
- aid: arthur-online:arthur-tenancies-api
  name: Arthur Tenancies API
  description: Tenancy agreements over a unit, including tenants on the tenancy, deposit registration, recurring charges,
    certificates, tasks, work orders, conversations, transactions, notes and tags. 21 documented paths.
  humanURL: https://developer.arthuronline.co.uk/
  baseURL: https://api.arthuronline.co.uk/v2
  tags:
  - Tenancies
  - Leases
  - Deposits
  properties:
  - type: Documentation
    url: https://developer.arthuronline.co.uk/
  - type: APIReference
    url: https://developer.arthuronline.co.uk/
  - type: PostmanCollection
    url: collections/arthur-online.postman_collection.json
  - type: Authentication
    url: authentication/arthur-online-authentication.yml
  - type: Webhooks
    url: asyncapi/arthur-online-webhooks.yml
  - type: OpenAPI
    url: openapi/arthur-online-tenancies-openapi.yml
  - type: Overlay
    url: overlays/arthur-online-tenancies-overlay.yaml
  - type: AsyncAPI
    url: asyncapi/arthur-online-webhooks-asyncapi.yml
- aid: arthur-online:arthur-tenants-api
  name: Arthur Tenants API
  description: Tenant people records - list, view, create and update tenants, and invite a tenant into the Arthur tenant portal.
    3 documented paths.
  humanURL: https://developer.arthuronline.co.uk/
  baseURL: https://api.arthuronline.co.uk/v2
  tags:
  - Tenants
  - People
  - Occupancy
  properties:
  - type: Documentation
    url: https://developer.arthuronline.co.uk/
  - type: APIReference
    url: https://developer.arthuronline.co.uk/
  - type: PostmanCollection
    url: collections/arthur-online.postman_collection.json
  - type: Authentication
    url: authentication/arthur-online-authentication.yml
  - type: Webhooks
    url: asyncapi/arthur-online-webhooks.yml
  - type: OpenAPI
    url: openapi/arthur-online-tenants-openapi.yml
  - type: Overlay
    url: overlays/arthur-online-tenants-overlay.yaml
  - type: AsyncAPI
    url: asyncapi/arthur-online-webhooks-asyncapi.yml
- aid: arthur-online:arthur-applicants-api
  name: Arthur Applicants API
  description: Prospective renters moving through the lettings funnel, including applicant status, credit checks, managers,
    assets, conversations, notes, tasks and tags. 15 documented paths.
  humanURL: https://developer.arthuronline.co.uk/
  baseURL: https://api.arthuronline.co.uk/v2
  tags:
  - Applicants
  - Leasing
  - Credit Checks
  properties:
  - type: Documentation
    url: https://developer.arthuronline.co.uk/
  - type: APIReference
    url: https://developer.arthuronline.co.uk/
  - type: PostmanCollection
    url: collections/arthur-online.postman_collection.json
  - type: Authentication
    url: authentication/arthur-online-authentication.yml
  - type: Webhooks
    url: asyncapi/arthur-online-webhooks.yml
  - type: OpenAPI
    url: openapi/arthur-online-applicants-openapi.yml
  - type: Overlay
    url: overlays/arthur-online-applicants-overlay.yaml
  - type: AsyncAPI
    url: asyncapi/arthur-online-webhooks-asyncapi.yml
- aid: arthur-online:arthur-viewings-api
  name: Arthur Viewings API
  description: Property and unit viewing appointments, the applicants attached to each viewing, assigned managers, conversations,
    notes and tags. 15 documented paths.
  humanURL: https://developer.arthuronline.co.uk/
  baseURL: https://api.arthuronline.co.uk/v2
  tags:
  - Viewings
  - Leasing
  - Scheduling
  properties:
  - type: Documentation
    url: https://developer.arthuronline.co.uk/
  - type: APIReference
    url: https://developer.arthuronline.co.uk/
  - type: PostmanCollection
    url: collections/arthur-online.postman_collection.json
  - type: Authentication
    url: authentication/arthur-online-authentication.yml
  - type: Webhooks
    url: asyncapi/arthur-online-webhooks.yml
  - type: OpenAPI
    url: openapi/arthur-online-viewings-openapi.yml
  - type: Overlay
    url: overlays/arthur-online-viewings-overlay.yaml
  - type: AsyncAPI
    url: asyncapi/arthur-online-webhooks-asyncapi.yml
- aid: arthur-online:arthur-maintenance-api
  name: Arthur Maintenance API
  description: The largest surface in the API - tasks, subtasks, work orders, quotes and the contractor workflow around them.
    45 documented paths.
  humanURL: https://developer.arthuronline.co.uk/
  baseURL: https://api.arthuronline.co.uk/v2
  tags:
  - Maintenance
  - Work Orders
  - Contractors
  properties:
  - type: Documentation
    url: https://developer.arthuronline.co.uk/
  - type: APIReference
    url: https://developer.arthuronline.co.uk/
  - type: PostmanCollection
    url: collections/arthur-online.postman_collection.json
  - type: Authentication
    url: authentication/arthur-online-authentication.yml
  - type: Webhooks
    url: asyncapi/arthur-online-webhooks.yml
  - type: OpenAPI
    url: openapi/arthur-online-maintenance-openapi.yml
  - type: Overlay
    url: overlays/arthur-online-maintenance-overlay.yaml
  - type: AsyncAPI
    url: asyncapi/arthur-online-webhooks-asyncapi.yml
- aid: arthur-online:arthur-financials-api
  name: Arthur Financials API
  description: Rental financials - invoices, transactions, transaction payoff and recurring charges. Read and update only;
    no create operations are documented. 6 documented paths.
  humanURL: https://developer.arthuronline.co.uk/
  baseURL: https://api.arthuronline.co.uk/v2
  tags:
  - Financials
  - Payments
  - Accounting
  properties:
  - type: Documentation
    url: https://developer.arthuronline.co.uk/
  - type: APIReference
    url: https://developer.arthuronline.co.uk/
  - type: PostmanCollection
    url: collections/arthur-online.postman_collection.json
  - type: Authentication
    url: authentication/arthur-online-authentication.yml
  - type: Webhooks
    url: asyncapi/arthur-online-webhooks.yml
  - type: OpenAPI
    url: openapi/arthur-online-financials-openapi.yml
  - type: Overlay
    url: overlays/arthur-online-financials-overlay.yaml
  - type: AsyncAPI
    url: asyncapi/arthur-online-webhooks-asyncapi.yml
- aid: arthur-online:arthur-assets-api
  name: Arthur Assets API
  description: Files and documents stored in Arthur and shared with owners, tenants and contractors. 2 documented paths.
  humanURL: https://developer.arthuronline.co.uk/
  baseURL: https://api.arthuronline.co.uk/v2
  tags:
  - Assets
  - Documents
  - Files
  properties:
  - type: Documentation
    url: https://developer.arthuronline.co.uk/
  - type: APIReference
    url: https://developer.arthuronline.co.uk/
  - type: PostmanCollection
    url: collections/arthur-online.postman_collection.json
  - type: Authentication
    url: authentication/arthur-online-authentication.yml
  - type: Webhooks
    url: asyncapi/arthur-online-webhooks.yml
  - type: OpenAPI
    url: openapi/arthur-online-assets-openapi.yml
  - type: Overlay
    url: overlays/arthur-online-assets-overlay.yaml
  - type: AsyncAPI
    url: asyncapi/arthur-online-webhooks-asyncapi.yml
- aid: arthur-online:arthur-utilities-api
  name: Arthur Utilities API
  description: Utility accounts attached to properties and units, and the meter readings recorded against them. 4 documented
    paths.
  humanURL: https://developer.arthuronline.co.uk/
  baseURL: https://api.arthuronline.co.uk/v2
  tags:
  - Utilities
  - Meter Readings
  properties:
  - type: Documentation
    url: https://developer.arthuronline.co.uk/
  - type: APIReference
    url: https://developer.arthuronline.co.uk/
  - type: PostmanCollection
    url: collections/arthur-online.postman_collection.json
  - type: Authentication
    url: authentication/arthur-online-authentication.yml
  - type: Webhooks
    url: asyncapi/arthur-online-webhooks.yml
  - type: OpenAPI
    url: openapi/arthur-online-utilities-openapi.yml
  - type: Overlay
    url: overlays/arthur-online-utilities-overlay.yaml
  - type: AsyncAPI
    url: asyncapi/arthur-online-webhooks-asyncapi.yml
- aid: arthur-online:arthur-certificates-api
  name: Arthur Certificates API
  description: Compliance certificates - gas safety, electrical, EPC and similar - with expiry tracking that also drives webhook
    events at 30 days, 7 days and on the day. 2 documented paths.
  humanURL: https://developer.arthuronline.co.uk/
  baseURL: https://api.arthuronline.co.uk/v2
  tags:
  - Certificates
  - Compliance
  - Safety
  properties:
  - type: Documentation
    url: https://developer.arthuronline.co.uk/
  - type: APIReference
    url: https://developer.arthuronline.co.uk/
  - type: PostmanCollection
    url: collections/arthur-online.postman_collection.json
  - type: Authentication
    url: authentication/arthur-online-authentication.yml
  - type: Webhooks
    url: asyncapi/arthur-online-webhooks.yml
  - type: OpenAPI
    url: openapi/arthur-online-certificates-openapi.yml
  - type: Overlay
    url: overlays/arthur-online-certificates-overlay.yaml
  - type: AsyncAPI
    url: asyncapi/arthur-online-webhooks-asyncapi.yml
- aid: arthur-online:arthur-entities-api
  name: Arthur Entities API
  description: Arthur entities - the account boundary that every API call must name in the mandatory X-EntityID request header.
    2 documented paths.
  humanURL: https://developer.arthuronline.co.uk/
  baseURL: https://api.arthuronline.co.uk/v2
  tags:
  - Entities
  - Accounts
  - Multi-tenancy
  properties:
  - type: Documentation
    url: https://developer.arthuronline.co.uk/
  - type: APIReference
    url: https://developer.arthuronline.co.uk/
  - type: PostmanCollection
    url: collections/arthur-online.postman_collection.json
  - type: Authentication
    url: authentication/arthur-online-authentication.yml
  - type: Webhooks
    url: asyncapi/arthur-online-webhooks.yml
  - type: OpenAPI
    url: openapi/arthur-online-entities-openapi.yml
  - type: Overlay
    url: overlays/arthur-online-entities-overlay.yaml
  - type: AsyncAPI
    url: asyncapi/arthur-online-webhooks-asyncapi.yml
- aid: arthur-online:arthur-conversations-api
  name: Arthur Conversations API
  description: Threaded conversations and messages between managers, tenants, owners and contractors, with attached assets.
    4 documented paths.
  humanURL: https://developer.arthuronline.co.uk/
  baseURL: https://api.arthuronline.co.uk/v2
  tags:
  - Conversations
  - Messaging
  - Communications
  properties:
  - type: Documentation
    url: https://developer.arthuronline.co.uk/
  - type: APIReference
    url: https://developer.arthuronline.co.uk/
  - type: PostmanCollection
    url: collections/arthur-online.postman_collection.json
  - type: Authentication
    url: authentication/arthur-online-authentication.yml
  - type: Webhooks
    url: asyncapi/arthur-online-webhooks.yml
  - type: OpenAPI
    url: openapi/arthur-online-conversations-openapi.yml
  - type: Overlay
    url: overlays/arthur-online-conversations-overlay.yaml
  - type: AsyncAPI
    url: asyncapi/arthur-online-webhooks-asyncapi.yml
- aid: arthur-online:arthur-tags-api
  name: Arthur Tags API
  description: Cross-cutting tags applied to properties, units, tenancies, applicants, viewings and notes, with tag and untag
    operations on each resource. 2 documented paths.
  humanURL: https://developer.arthuronline.co.uk/
  baseURL: https://api.arthuronline.co.uk/v2
  tags:
  - Tags
  - Classification
  properties:
  - type: Documentation
    url: https://developer.arthuronline.co.uk/
  - type: APIReference
    url: https://developer.arthuronline.co.uk/
  - type: PostmanCollection
    url: collections/arthur-online.postman_collection.json
  - type: Authentication
    url: authentication/arthur-online-authentication.yml
  - type: Webhooks
    url: asyncapi/arthur-online-webhooks.yml
  - type: OpenAPI
    url: openapi/arthur-online-tags-openapi.yml
  - type: Overlay
    url: overlays/arthur-online-tags-overlay.yaml
  - type: AsyncAPI
    url: asyncapi/arthur-online-webhooks-asyncapi.yml
- aid: arthur-online:arthur-notes-api
  name: Arthur Notes API
  description: Free-text notes recorded against any Arthur resource, with their own tagging operations. 5 documented paths.
  humanURL: https://developer.arthuronline.co.uk/
  baseURL: https://api.arthuronline.co.uk/v2
  tags:
  - Notes
  - Annotations
  properties:
  - type: Documentation
    url: https://developer.arthuronline.co.uk/
  - type: APIReference
    url: https://developer.arthuronline.co.uk/
  - type: PostmanCollection
    url: collections/arthur-online.postman_collection.json
  - type: Authentication
    url: authentication/arthur-online-authentication.yml
  - type: Webhooks
    url: asyncapi/arthur-online-webhooks.yml
  - type: OpenAPI
    url: openapi/arthur-online-notes-openapi.yml
  - type: Overlay
    url: overlays/arthur-online-notes-overlay.yaml
  - type: AsyncAPI
    url: asyncapi/arthur-online-webhooks-asyncapi.yml
- aid: arthur-online:arthur-types-api
  name: Arthur Types API
  description: Read-only reference vocabularies backing every enumerated field in Arthur - access detail types, applicant
    statuses and types, area types, asset types, certificate types, citizen types, contract types and 32 more. 39 documented
    GET paths.
  humanURL: https://developer.arthuronline.co.uk/
  baseURL: https://api.arthuronline.co.uk/v2
  tags:
  - Types
  - Reference Data
  - Vocabulary
  properties:
  - type: Documentation
    url: https://developer.arthuronline.co.uk/
  - type: APIReference
    url: https://developer.arthuronline.co.uk/
  - type: PostmanCollection
    url: collections/arthur-online.postman_collection.json
  - type: Authentication
    url: authentication/arthur-online-authentication.yml
  - type: Webhooks
    url: asyncapi/arthur-online-webhooks.yml
  - type: OpenAPI
    url: openapi/arthur-online-types-openapi.yml
  - type: Overlay
    url: overlays/arthur-online-types-overlay.yaml
  - type: AsyncAPI
    url: asyncapi/arthur-online-webhooks-asyncapi.yml
common:
- type: AgenticAccess
  url: agentic-access/arthur-online-agentic-access.yml
- type: DomainSecurity
  url: security/arthur-online-domain-security.yml
- type: Authentication
  url: authentication/arthur-online-authentication.yml
- type: Website
  url: https://www.arthuronline.co.uk/
- type: Portal
  url: https://developer.arthuronline.co.uk/
- type: Documentation
  url: https://developer.arthuronline.co.uk/
- type: APIReference
  url: https://developer.arthuronline.co.uk/
- type: PostmanCollection
  url: collections/arthur-online.postman_collection.json
- type: Signup
  url: https://www.arthuronline.co.uk/connect/arthur-api
- type: Support
  url: https://support.arthuronline.co.uk/
- type: Blog
  url: https://www.arthuronline.co.uk/arthur-insight/blog
- type: Integrations
  url: https://www.arthuronline.co.uk/connect/
- type: PrivacyPolicy
  url: https://www.arthuronline.co.uk/legal/privacy-policy
- type: TermsOfService
  url: https://www.arthuronline.co.uk/legal/terms-and-conditions
- type: DeveloperPortal
  url: https://developer.arthuronline.co.uk/
- type: GettingStarted
  url: https://www.arthuronline.co.uk/connect/arthur-api
- type: Postman
  url: https://documenter.getpostman.com/view/22554870/2s93sZ5YeM
- type: SignUp
  url: https://www.arthuronline.co.uk/connect/arthur-api
- type: Login
  url: https://login.arthuronline.co.uk/
- type: HelpCenter
  url: https://support.arthuronline.co.uk/support/solutions
- type: Pricing
  url: https://www.arthuronline.co.uk/pricing
- type: GitHubOrganization
  url: https://github.com/arthur-crm
- type: Conventions
  url: conventions/arthur-online-conventions.yml
- type: ErrorCatalog
  url: errors/arthur-online-problem-types.yml
- type: Lifecycle
  url: lifecycle/arthur-online-lifecycle.yml
- type: Conformance
  url: conformance/arthur-online-conformance.yml
- type: RateLimits
  url: rate-limits/arthur-online-rate-limits.yml
- type: Plans
  url: plans/arthur-online-plans.yml
- type: Packages
  url: packages/arthur-online-packages.yml
- type: DataModel
  url: data-model/arthur-online-data-model.yml
- type: Vocabulary
  url: vocabulary/arthur-online-vocabulary.yml
- type: LLMsTxt
  url: llms/arthur-online-llms.txt
- type: MCPServer
  url: mcp/arthur-online-mcp.yml
- type: ToolCrosswalk
  url: mcp/arthur-online-tool-crosswalk.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Arazzo
  url: arazzo/_index.yml
- type: Examples
  url: examples/_index.yml
- type: Webhooks
  url: asyncapi/arthur-online-webhooks.yml
- type: AsyncAPI
  url: asyncapi/arthur-online-webhooks-asyncapi.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com