Arthur Online MCP by usefulapi

Arthur Online MCP by usefulapi

Hosted MCP endpoint: https://arthur-online.usefulapi.io/mcp

Connect

• Claude (claude.ai, Desktop): open Customize → Connectors, click + Add → Add custom connector, and paste https://arthur-online.usefulapi.io/mcp.
• Claude Code: claude mcp add --transport http arthur-online https://arthur-online.usefulapi.io/mcp, then run /mcp to log in.
• VS Code: Add to VS Code.
• Cursor and other clients: add the URL as a remote MCP server:

{
  "mcpServers": {
    "arthur-online": {
      "url": "https://arthur-online.usefulapi.io/mcp"
    }
  }
}

Add only the URL. Do not add an Authorization header or an API key to the client config: the server signs you in with OAuth, and you sign in with your Arthur Online account.

Step-by-step setup, where to find your credentials, and FAQ: https://usefulapi.io/arthur-online/

Connect your Arthur account through OAuth and enter its Entity ID from Settings → Your Account → OAuth Applications.

Tools

Tool	Type	What it does
arthur_list_properties	read	List properties
arthur_get_property	read	Get property
arthur_list_units	read	List units
arthur_get_unit	read	Get unit
arthur_list_tenancies	read	List tenancies
arthur_get_tenancy	read	Get tenancy
arthur_list_tenants	read	List tenants
arthur_get_tenant	read	Get tenant
arthur_list_tasks	read	List tasks
arthur_get_task	read	Get task
arthur_list_workorders	read	List workorders
arthur_get_workorder	read	Get workorder
arthur_list_transactions	read	List transactions
arthur_get_transaction	read	Get transaction
arthur_list_invoices	read	List invoices
arthur_get_invoice	read	Get invoice
arthur_list_certificates	read	List certificates
arthur_get_certificate	read	Get certificate
arthur_create_unit_task	write	Create maintenance task on a unit
arthur_add_task_note	write	Add note to maintenance task
arthur_usage_status	meta	Usage status (free-tier meter)
arthur_request_feature	meta	Request a missing feature
arthur_upgrade	meta	Upgrade to Pro (unlimited*)
arthur_cancel_subscription	meta	Cancel the Pro subscription

read tools are read-only; write tools mutate data (clients should confirm them); meta tools report usage, manage your subscription or send a feature request.

Pricing

Plan	Price	Limit
Free	$0	50 tool calls / month
Pro (per property-management account)	$9/mo or $90/yr (2 months free)	10,000 tool calls / month

Pro covers this server only. Subscribe with arthur_upgrade (it returns a Stripe Checkout link). Cancel any time with arthur_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running arthur_upgrade before then undoes the cancel. Or write to [email protected].

License

MIT