Arthur Online MCP by usefulapi MCP Server

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answering

Arthur Online MCP by usefulapi is answering right now. Last checked 5 min ago. It exposes 20 tools. Last commit 1 Nov 2026.

Read Arthur properties, units and tenancies; track maintenance and add tasks or notes.

Uptime history 39 hours of history

39 hours agonow

100.0%

Uptime 24h

92 of 92 checks

Tools

read from the server

223 ms

Response time

average over 24h

Stars

last commit 1 Nov 2026

What changed 4

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 31 October 2026. No other catalogue keeps this.

31 Oct a tool changed version4 times that day

and 3 more, back to 31 October 2026

Nothing serious here today

Today is the operative word: we check Arthur Online MCP by usefulapi every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 5 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add arthur-online --transport http https://arthur-online.usefulapi.io/mcp

Settings → Connectors → Add custom connector, then paste this address

https://arthur-online.usefulapi.io/mcp

~/.codex/config.toml

[mcp_servers.arthur-online]
url = "https://arthur-online.usefulapi.io/mcp"

.cursor/mcp.json

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

.vscode/mcp.json

{
  "servers": {
    "arthur-online": {
      "type": "http",
      "url": "https://arthur-online.usefulapi.io/mcp"
    }
  }
}

Available tools 20

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

arthur

arthur_add_task_note

WRITE: add a note to an existing maintenance task when the user requests it. Confirm the intended task and note first. POST /v2/tasks/{task_id}/notes. This creates a note once; it is not a tenant message and is never retried automatically.

arthur_create_unit_task

WRITE: create a maintenance task associated with a unit when the user requests it. Confirm the intended unit and task details first. POST /v2/units/{unit_id}/tasks. No files, tenant invitations or financial changes; creates once and is never retried automatically.

arthur_get_certificate

Property and unit certificates, type, expiry date and status. GET /v2/certificates/{id}.

arthur_get_invoice

Read contractor invoices, amounts, outstanding balances and payment status; never pays or changes an invoice. GET /v2/invoices/{id}.

arthur_get_property

Properties, their addresses, type, owner and managing agent. GET /v2/properties/{id}.

arthur_get_task

Maintenance tasks, status, descriptions, due dates, assigned managers and tags. GET /v2/tasks/{id}.

arthur_get_tenancy

Tenancies, their status, dates, unit and rent details. GET /v2/tenancies/{id}.

arthur_get_tenant

Tenant contact details and their linked tenancy; invitation codes are removed. GET /v2/tenants/{id}.

arthur_get_transaction

Read financial transactions and rent charges, with payment status and dates; never posts money. GET /v2/transactions/{id}.

arthur_get_unit

Units, vacancy, availability, unit type, market rent and location. GET /v2/units/{id}.

arthur_get_workorder

Contractor work orders, status, title, costs, dates and linked maintenance task. GET /v2/workorders/{id}.

arthur_list_certificates

Property and unit certificates, type, expiry date and status. GET /v2/certificates. Returns data plus the vendor pagination; this is one page, not the whole portfolio.

arthur_list_invoices

Read contractor invoices, amounts, outstanding balances and payment status; never pays or changes an invoice. GET /v2/invoices. Returns data plus the vendor pagination; this is one page, not the whole portfolio.

arthur_list_properties

Properties, their addresses, type, owner and managing agent. GET /v2/properties. Returns data plus the vendor pagination; this is one page, not the whole portfolio.

arthur_list_tasks

Maintenance tasks, status, descriptions, due dates, assigned managers and tags. GET /v2/tasks. Returns data plus the vendor pagination; this is one page, not the whole portfolio.

arthur_list_tenancies

Tenancies, their status, dates, unit and rent details. GET /v2/tenancies. Returns data plus the vendor pagination; this is one page, not the whole portfolio.

arthur_list_tenants

Tenant contact details and their linked tenancy; invitation codes are removed. GET /v2/tenants. Returns data plus the vendor pagination; this is one page, not the whole portfolio.

arthur_list_transactions

Read financial transactions and rent charges, with payment status and dates; never posts money. GET /v2/transactions. Returns data plus the vendor pagination; this is one page, not the whole portfolio.

arthur_list_units

Units, vacancy, availability, unit type, market rent and location. GET /v2/units. Returns data plus the vendor pagination; this is one page, not the whole portfolio.

arthur_list_workorders

Contractor work orders, status, title, costs, dates and linked maintenance task. GET /v2/workorders. Returns data plus the vendor pagination; this is one page, not the whole portfolio.

Endpoints

URL	Transport	State	Latency	Checked
https://arthur-online.usefulapi.io/mcp	streamable-http	answering	169 ms	5 min ago

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Arthur Online MCP by usefulapi — questions

Answers built from our own checks of this server.

What can Arthur Online MCP by usefulapi do?

It exposes 20 tools, read directly from the server on our last check. Among them: arthur_add_task_note, arthur_create_unit_task, arthur_get_certificate, arthur_get_invoice, arthur_get_property, arthur_get_task and 14 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is Arthur Online MCP by usefulapi working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 223 ms. The bar chart above shows every period we have measured.

How do I connect Arthur Online MCP by usefulapi?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Arthur Online MCP by usefulapi need an API key?

No. Arthur Online MCP by usefulapi completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 20 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Arthur Online MCP by usefulapi?

It answers our handshake in 223 ms on average, which is faster than 63% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is Arthur Online MCP by usefulapi open source?

The code is open source: it is published under the MIT licence, written in JavaScript, 1 stars on GitHub and 1 open issue. The licence covers the code in the repository, not the hosted service at arthur-online.usefulapi.io, which runs on its operator's own terms.