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PopNx MCPMCP servers for people who use AI · explained in plain words

Arthur Online MCP by usefulapi

by m190version 1.10.1i★ 1 (Stars for the whole repo)iRuns in the cloud
Registry nameio.usefulapi/arthur-online

How to install

What it does

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

  • Connects Runs in the cloud
  • Account or key No key needed
  • Category Docs, sheets & office work

Install

Pick the AI app you use, then copy the settings.

Passed 4/4 checks · What you ask goes through the maker’s server (arthur-online.usefulapi.io) · ✓ Commands checked Nov 13, 2026

First: which AI do you use?

Pick your app and the steps appear below.

Works with Claude · about 2 min

No key, nothing to install · Set it up once on claude.ai or the desktop app, then use it in chat · free accounts can add 1 · on Team/Enterprise an Owner adds it

  1. Open Claude’s Connectors page

    CustomizeConnectors

    CustomizeConnectors1Add2https://…3Add4
  2. Click “Add” → “Custom” → “Web” and fill in these 2 fields

    Copy each value into the field with the same name in Claude, then click Continue

    Name · NameArthur Online MCP by usefulapi
    Remote MCP server URL · Addresshttps://arthur-online.usefulapi.io/mcp

    Click Continue past the sign-in settings Claude detected · under Authentication choose what the maker says (Sign in now, Sign in when needed or No sign in), then click Add

  3. Turn it on in a chat

    +ConnectorsArthur Online MCP by usefulapi

  4. Try it

    Use Arthur Online MCP by usefulapi and tell me what you can do for me, then show me one thing

    ✓ If Claude says it is using Arthur Online MCP by usefulapi or shows a Arthur Online MCP by usefulapi tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with ChatGPT, depending on your plan

Full MCP: ChatGPT Business, Enterprise or Edu on the web · Pro: connects with read/fetch permissions, so tools that change data may not work · Plus: not confirmed in OpenAI’s docs; if you see an add-custom-MCP option on the Plugins page you can try these steps · web only

  1. Open ChatGPT’s add-MCP page on the web

    Plugins+Add custom MCP server

    ChatGPTPlugins1+2https://…3Create4
  2. Fill in the name and address

    Enter a name, paste the address under Connection, tick the risk warning and click Create as a plugin

    Name · NameArthur Online MCP by usefulapi
    Connection · Addresshttps://arthur-online.usefulapi.io/mcp
  3. Pick Arthur Online MCP by usefulapi in a chat

    Start a new chat and pick Arthur Online MCP by usefulapi from your plugins before typing

  4. Try it

    Use Arthur Online MCP by usefulapi and tell me what you can do for me, then show me one thing

    ✓ If ChatGPT says it is using Arthur Online MCP by usefulapi or shows a Arthur Online MCP by usefulapi tool in the answer, you are connected

Menu names checked against OpenAI’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with Claude Code · about 2 min

No key, nothing to install

  1. Open Terminal

    Mac: press Command+Space and type Terminal · Windows: open PowerShell

  2. Paste this command and press Enter

    claude mcp add --transport http --scope user arthur-online https://arthur-online.usefulapi.io/mcp
  3. Type /mcp in Claude Code

    You should see Arthur Online MCP by usefulapi listed as connected

  4. Try it

    Use Arthur Online MCP by usefulapi and tell me what you can do for me, then show me one thing

    ✓ If Claude Code says it is using Arthur Online MCP by usefulapi or shows a Arthur Online MCP by usefulapi tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with Cursor · about 2 min

No key, nothing to install

  1. Click this button to open Cursor

    Open in Cursor

    Cursor asks you to confirm; click Install

  2. Open the AI chat in Cursor in Agent mode

  3. Try it

    Use Arthur Online MCP by usefulapi and tell me what you can do for me, then show me one thing

    ✓ If Cursor says it is using Arthur Online MCP by usefulapi or shows a Arthur Online MCP by usefulapi tool in the answer, you are connected

Menu names checked against Cursor’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with VS Code · about 2 min

No key, nothing to install

  1. Click this button to open VS Code

    Open in VS Code

    VS Code asks you to confirm; click Install

  2. Open the AI chat in VS Code in Agent mode

  3. Try it

    Use Arthur Online MCP by usefulapi and tell me what you can do for me, then show me one thing

    ✓ If VS Code says it is using Arthur Online MCP by usefulapi or shows a Arthur Online MCP by usefulapi tool in the answer, you are connected

Menu names checked against VS Code’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Other apps that use MCP, such as Windsurf, Zed or Gemini CLI, each add servers differently. See how in the app list.

See every app that uses MCP →

Address for apps that connect over the web

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

JSON settings are under “For developers” below

Stuck? Ask people who use Arthur Online MCP by usefulapi💬 Discussion →
For developers: Terminal commands and JSON settings

Over the web

Claude Code

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

Cursor (~/.cursor/mcp.json)

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

VS Code (mcp.json)

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

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

At a glance

GitHub starsi
1 (Stars for the whole repo)
This repo holds several MCP listings; its stars count once in rankings
Downloads per weeki
Not on npm/PyPI
Verified domain
✓ usefulapi.io
Connection
Runs in the cloud
Transport
streamable-http
Latest versioni
1.10.1
Published to registryi
Nov 13, 2026
Code last changedi
Nov 14, 2026
Maker
m190
Registry status
Active

Which apps can use it

Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.

Connect over the internet in

ClaudeChatGPTGooseLM StudioMsty StudioCherry StudioCursorVS Code + GitHub CopilotVisual StudioWindsurf (Devin Desktop)ZedKiroClineContinueJetBrains AI AssistantClaude CodeCodex CLIGemini CLIOpenCodenodecodeWarpLibreChatOpen WebUIRaycast

All apps, with pros and cons →

Related guides

What it can do

Tool names and descriptions exactly as the server reported them on Nov 13, 2026. The maker wrote them, not us; we show them as plain text.

  • 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_get_property

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

  • 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_get_unit

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

  • 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_get_tenancy

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

  • 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_get_tenant

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

  • 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_get_task

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

  • 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.

  • arthur_get_workorder

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

  • 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_get_transaction

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

  • 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_get_invoice

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

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

  • 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_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.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 14, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified against the domain usefulapi.io (the registry checks domain ownership)

  • ✓ Pass

    Still maintained

    Code last changed today

  • – Not applicable

    Has a licence

    Not applicable: a cloud server run by the owner of usefulapi.io; you don't run code from the repo

  • ✓ Pass

    Endpoint responds

    Responded in 186 ms (HTTP 200)

  • – Not applicable

    Sign-in with OAuth

    No sign-in needed

  • ✓ Pass

    No hidden instructions in tool descriptions

    Read 20 tool descriptions and found no hidden instructions to the AI

Discussion

Ask, share a tip or report that it does not work. Sorted by what people marked helpful.

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Posts here are written by users, not the PopNx team.

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User reviews

No reviews yet

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Compared with others in Docs, sheets & office worki

  • More stars than 0% of the other 3914 servers in this category
  • Published to the registry more recently than 94% of the other 3914 servers in this category
  • Basic checks equal to or better than 100% of the other 3914 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Arthur Online MCP by usefulapi safe?

It passed 4 of 4 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed today, and the latest version (1.10.1) reached the registry yesterday.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT on the web (full MCP on Business and above; Pro read-only).

What can I use instead?

In the same category: Puter MCP, XcodeBuildMCP, XcodeBuildMCP

Others in the same category

Servers in the same category from other makers, sorted by stars.

Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Puter MCP

Puter MCP enables AI tools to interact with Puter: manage files, websites, workers, and more

by HeyPuterWidely used★ 44.2KUpdated 5 months ago

Runs in the cloud✓ service owner · puter.com

XcodeBuildMCP

XcodeBuildMCP provides tools for Xcode project management, simulator management, and app utilities.

by getsentryWidely used↓ 130.5K/wk shared package★ 6.6KUpdated 4 months ago

Runs on your computer✓ service owner · xcodebuildmcp.com

XcodeBuildMCP

XcodeBuildMCP provides tools for Xcode project management, simulator management, and app utilities.

by cameroncookeWidely used↓ 130.5K/wk shared package★ 6.6KUpdated 14 months ago

Runs on your computer

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

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

ToolTypeWhat it does
arthur_list_propertiesreadList properties
arthur_get_propertyreadGet property
arthur_list_unitsreadList units
arthur_get_unitreadGet unit
arthur_list_tenanciesreadList tenancies
arthur_get_tenancyreadGet tenancy
arthur_list_tenantsreadList tenants
arthur_get_tenantreadGet tenant
arthur_list_tasksreadList tasks
arthur_get_taskreadGet task
arthur_list_workordersreadList workorders
arthur_get_workorderreadGet workorder
arthur_list_transactionsreadList transactions
arthur_get_transactionreadGet transaction
arthur_list_invoicesreadList invoices
arthur_get_invoicereadGet invoice
arthur_list_certificatesreadList certificates
arthur_get_certificatereadGet certificate
arthur_create_unit_taskwriteCreate maintenance task on a unit
arthur_add_task_notewriteAdd note to maintenance task
arthur_usage_statusmetaUsage status (free-tier meter)
arthur_request_featuremetaRequest a missing feature
arthur_upgrademetaUpgrade to Pro or Pro+
arthur_cancel_subscriptionmetaCancel 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

PlanPriceLimit
Free$050 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 support@usefulapi.io.

License

MIT