Arthur Online MCP by usefulapi
REMOTE · ARTHUR-ONLINE.USEFULAPI.IO
Read Arthur properties, units and tenancies; track maintenance and add tasks or notes.
Available components
Last scanned (1 hour ago)
Scores higher than 4% of remote servers
Reachable. Last reached 5 Nov 2026.
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security46
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not yet verified: we couldn't confirm whether this endpoint requires it. View diagnostics → Unverified
- HTTPS enforcement could not be verified: the plaintext port redirected somewhere other than https, so enforcement is unproven. View diagnostics → Unverified
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability0
- Transport check failed: declared streamable-http, but the endpoint redirected instead of responding directly. See how to fix → View diagnostics → Fail
Schema Quality & AI Usability0
- Schema not yet verified: we couldn't read the endpoint's schema, or could read only part of its tool list.Unverified
Stability & Change Management0
- Stability not yet verified: not enough scan history yet (needs a 30-day window).Unverified
Tool Coverage0
- Tool coverage not yet verified: we couldn't read the endpoint's tools, or could read only part of the list.Unverified
Tool Safety0
- Tool safety not yet verified: we couldn't read the endpoint's tools, or could read only part of the list.Unverified
Capabilities0
- Capabilities not yet verified: we couldn't read the endpoint's capabilities.Unverified
Unverified: 5 categories
Categories scored 0 because we could not verify them: authentication we do not have, an unreachable endpoint, or not enough scan history. We only credit what we can confirm.
Checks we ran (4)
- TLS certificate
- HSTS header
- DNSSEC
- Transport
Checks we could not complete (7)
These are gaps on our side, not findings about this hosted endpoint. We only credit what we can confirm, so a category made up entirely of them scores 0.
- Authorization in Endpoint SecurityAuthorisation not yet verified: we couldn't confirm whether this endpoint requires it.
- HTTPS in Endpoint SecurityHTTPS enforcement could not be verified: the plaintext port redirected somewhere other than https, so enforcement is unproven.
- Schema quality in Schema Quality & AI Usability (scores 0 for this)Schema not yet verified: we couldn't read the endpoint's schema, or could read only part of its tool list.
- Stability in Stability & Change Management (scores 0 for this)Stability not yet verified: not enough scan history yet (needs a 30-day window).
- Tool coverage in Tool Coverage (scores 0 for this)Tool coverage not yet verified: we couldn't read the endpoint's tools, or could read only part of the list.
- Tool safety in Tool Safety (scores 0 for this)Tool safety not yet verified: we couldn't read the endpoint's tools, or could read only part of the list.
- Capabilities in Capabilities (scores 0 for this)Capabilities not yet verified: we couldn't read the endpoint's capabilities.
Does not apply to this hosted endpoint (2)
- Supply Chain SecurityScored on package channels only. This is a hosted endpoint, so there is nothing to install or inspect.
- Provenance & TransparencyScored on package channels only. This is a hosted endpoint, so there is nothing to install or inspect.
The score does not measure everything. What the score does not measure →
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 2 Nov 26 −46
- Endpoint reachability: reachable → not serving MCP ▼ security
- Stability: 0.07 → unverified ▼ security
- Tool safety: pass → unverified ▼ security
- Authorization: pass → unverified ▼ security
- Schema quality: 100 → unverified ▼ functional
- Capabilities: pass → unverified ▼ functional
- Tool coverage: 100 → unverified ▼ functional
- 31 Oct 26 +4
- Authorization: partial → pass ▲ security
- Stability: unverified → 0.03 ▲ functional
- MCP protocol: fail → pass ▲ functional
- New prompt “check_property_certificate_expiry_dates” functional
- New prompt “create_a_maintenance_task_for_a_selected_unit” functional
- New prompt “review_overdue_rent_transactions” functional
- New prompt “review_vacant_units_and_upcoming_availability” functional
- MCP protocol version: 2025-06-18 → 2025-11-25 functional
- Server version: 1.2.0 → 1.4.0 functional
- Server version: 1.1.0 → 1.2.0 functional
- Server version: 1.0.0 → 1.1.0 functional
- 30 Oct 26 60
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 5 Nov 2026 · Probed https://arthur-online.usefulapi.io/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=usefulapi.io | CN=WE1,O=Google Trust Services,C=US | 13 Sept 2026 | 12 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | d9be3287b0fde9630e825ba1f79bff3f |
| SANs: usefulapi.io, *.usefulapi.io | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of arthur-online.usefulapi.io. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | Trust anchor | 20326, 38696 | 8, 8 | Verified |
| io. | DS published | 38690 | 8 | Verified |
| usefulapi.io. | No DS | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication Inconclusive
We could not reach the endpoint well enough to judge its authorisation posture.
| Result | Inconclusive |
|---|---|
| HTTP status | 302 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://arthur-online.usefulapi.io/mcp | Redirected | 302 | https://usefulapi.io/arthur-online/ |
| http (plaintext) | http://arthur-online.usefulapi.io/mcp | Inconclusive | 302 | http://arthur-online.usefulapi.io/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
arthur_add_task_note Add note to maintenance task ~97
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.
| Name | Type | Req | Description |
|---|---|---|---|
| content | string | yes | – |
| tags | array | – | – |
| task_id | integer | yes | Arthur numeric record id, from the corresponding list tool. |
No output schema declared.
No examples provided.
arthur_create_unit_task Create maintenance task on a unit ~172
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.
| Name | Type | Req | Description |
|---|---|---|---|
| api_notes | string | – | – |
| assigned_managers | array | – | – |
| description | string | yes | – |
| due_date | string | – | Calendar date in YYYY-MM-DD format. |
| due_time | string | – | Due time HH:MM in the Arthur account's local time. |
| emergency | boolean | – | – |
| private | boolean | – | – |
| tags | array | – | – |
| task_type | string | – | – |
| unit_id | integer | yes | Arthur numeric record id, from the corresponding list tool. |
No output schema declared.
No examples provided.
arthur_get_certificate Get certificate ~49
Property and unit certificates, type, expiry date and status. GET /v2/certificates/{id}.
| Name | Type | Req | Description |
|---|---|---|---|
| id | integer | yes | Arthur numeric record id, from the corresponding list tool. |
No output schema declared.
No examples provided.
arthur_get_invoice Get invoice ~55
Read contractor invoices, amounts, outstanding balances and payment status; never pays or changes an invoice. GET /v2/invoices/{id}.
| Name | Type | Req | Description |
|---|---|---|---|
| id | integer | yes | Arthur numeric record id, from the corresponding list tool. |
No output schema declared.
No examples provided.
arthur_get_property Get property ~48
Properties, their addresses, type, owner and managing agent. GET /v2/properties/{id}.
| Name | Type | Req | Description |
|---|---|---|---|
| id | integer | yes | Arthur numeric record id, from the corresponding list tool. |
No output schema declared.
No examples provided.
arthur_get_task Get task ~50
Maintenance tasks, status, descriptions, due dates, assigned managers and tags. GET /v2/tasks/{id}.
| Name | Type | Req | Description |
|---|---|---|---|
| id | integer | yes | Arthur numeric record id, from the corresponding list tool. |
No output schema declared.
No examples provided.
arthur_get_tenancy Get tenancy ~52
Tenancies, their status, dates, unit and rent details. GET /v2/tenancies/{id}.
| Name | Type | Req | Description |
|---|---|---|---|
| id | integer | yes | Arthur numeric record id, from the corresponding list tool. |
No output schema declared.
No examples provided.
arthur_get_tenant Get tenant ~51
Tenant contact details and their linked tenancy; invitation codes are removed. GET /v2/tenants/{id}.
| Name | Type | Req | Description |
|---|---|---|---|
| id | integer | yes | Arthur numeric record id, from the corresponding list tool. |
No output schema declared.
No examples provided.
arthur_get_transaction Get transaction ~53
Read financial transactions and rent charges, with payment status and dates; never posts money. GET /v2/transactions/{id}.
| Name | Type | Req | Description |
|---|---|---|---|
| id | integer | yes | Arthur numeric record id, from the corresponding list tool. |
No output schema declared.
No examples provided.
arthur_get_unit Get unit ~50
Units, vacancy, availability, unit type, market rent and location. GET /v2/units/{id}.
| Name | Type | Req | Description |
|---|---|---|---|
| id | integer | yes | Arthur numeric record id, from the corresponding list tool. |
No output schema declared.
No examples provided.
arthur_get_workorder Get workorder ~53
Contractor work orders, status, title, costs, dates and linked maintenance task. GET /v2/workorders/{id}.
| Name | Type | Req | Description |
|---|---|---|---|
| id | integer | yes | Arthur numeric record id, from the corresponding list tool. |
No output schema declared.
No examples provided.
arthur_list_certificates List certificates ~122
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.
| Name | Type | Req | Description |
|---|---|---|---|
| direction | string | – | Sort direction (default ASC when sorting). |
| limit | integer | – | Records per page, 1–100 (default 20). |
| page | integer | – | Results page (default 1). Read pagination.pageCount before requesting the next page. |
| sort | string | – | Vendor field to sort by, for example id or created. |
No output schema declared.
No examples provided.
arthur_list_invoices List invoices ~191
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.
| Name | Type | Req | Description |
|---|---|---|---|
| completed_date | string | – | Calendar date in YYYY-MM-DD format. |
| direction | string | – | Sort direction (default ASC when sorting). |
| limit | integer | – | Records per page, 1–100 (default 20). |
| page | integer | – | Results page (default 1). Read pagination.pageCount before requesting the next page. |
| paid_date | string | – | Calendar date in YYYY-MM-DD format. |
| sort | string | – | Vendor field to sort by, for example id or created. |
| status | string | – | – |
| submitted | boolean | – | – |
| workorder_id | integer | – | Arthur numeric record id, from the corresponding list tool. |
No output schema declared.
No examples provided.
arthur_list_properties List properties ~204
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.
| Name | Type | Req | Description |
|---|---|---|---|
| _q | string | – | – |
| city | string | – | – |
| direction | string | – | Sort direction (default ASC when sorting). |
| full_address | string | – | – |
| letting_agent_id | integer | – | Arthur numeric record id, from the corresponding list tool. |
| limit | integer | – | Records per page, 1–100 (default 20). |
| page | integer | – | Results page (default 1). Read pagination.pageCount before requesting the next page. |
| postcode | string | – | – |
| property_owner_id | integer | – | Arthur numeric record id, from the corresponding list tool. |
| property_type | string | – | – |
| sort | string | – | Vendor field to sort by, for example id or created. |
| unit_status | string | – | – |
No output schema declared.
No examples provided.
arthur_list_tasks List tasks ~233
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.
| Name | Type | Req | Description |
|---|---|---|---|
| _q | string | – | – |
| assigned_to | string | – | – |
| created_date_from | string | – | Calendar date in YYYY-MM-DD format. |
| created_date_to | string | – | Calendar date in YYYY-MM-DD format. |
| direction | string | – | Sort direction (default ASC when sorting). |
| due_date_from | string | – | Calendar date in YYYY-MM-DD format. |
| due_date_to | string | – | Calendar date in YYYY-MM-DD format. |
| limit | integer | – | Records per page, 1–100 (default 20). |
| page | integer | – | Results page (default 1). Read pagination.pageCount before requesting the next page. |
| sort | string | – | Vendor field to sort by, for example id or created. |
| status | string | – | Comma-separated task statuses. |
| tags | string | – | Comma-separated tags. |
| task_type | string | – | – |
No output schema declared.
No examples provided.
arthur_list_tenancies List tenancies ~257
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.
| Name | Type | Req | Description |
|---|---|---|---|
| _q | string | – | – |
| assigned_to | integer | – | Arthur numeric record id, from the corresponding list tool. |
| direction | string | – | Sort direction (default ASC when sorting). |
| end_date | string | – | Calendar date in YYYY-MM-DD format. |
| full_address | string | – | – |
| limit | integer | – | Records per page, 1–100 (default 20). |
| modifiedFrom | string | – | Calendar date in YYYY-MM-DD format. |
| modifiedTo | string | – | Calendar date in YYYY-MM-DD format. |
| moveInDate | string | – | Calendar date in YYYY-MM-DD format. |
| moveOutDate | string | – | Calendar date in YYYY-MM-DD format. |
| page | integer | – | Results page (default 1). Read pagination.pageCount before requesting the next page. |
| sort | string | – | Vendor field to sort by, for example id or created. |
| start_date | string | – | Calendar date in YYYY-MM-DD format. |
| status | string | – | – |
No output schema declared.
No examples provided.
arthur_list_tenants List tenants ~199
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.
| Name | Type | Req | Description |
|---|---|---|---|
| direction | string | – | Sort direction (default ASC when sorting). |
| string | – | – | |
| full_address | string | – | – |
| limit | integer | – | Records per page, 1–100 (default 20). |
| mobile | string | – | – |
| page | integer | – | Results page (default 1). Read pagination.pageCount before requesting the next page. |
| property_id | integer | – | Arthur numeric record id, from the corresponding list tool. |
| sort | string | – | Vendor field to sort by, for example id or created. |
| tenancy_id | integer | – | Arthur numeric record id, from the corresponding list tool. |
| unit_id | integer | – | Arthur numeric record id, from the corresponding list tool. |
No output schema declared.
No examples provided.
arthur_list_transactions List transactions ~209
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.
| Name | Type | Req | Description |
|---|---|---|---|
| date_from | string | – | Calendar date in YYYY-MM-DD format. |
| date_to | string | – | Calendar date in YYYY-MM-DD format. |
| direction | string | – | Sort direction (default ASC when sorting). |
| limit | integer | – | Records per page, 1–100 (default 20). |
| page | integer | – | Results page (default 1). Read pagination.pageCount before requesting the next page. |
| sort | string | – | Vendor field to sort by, for example id or created. |
| statement | string | – | – |
| status | string | – | – |
| transaction_date_from | string | – | Calendar date in YYYY-MM-DD format. |
| transaction_date_to | string | – | Calendar date in YYYY-MM-DD format. |
| transaction_type | string | – | – |
No output schema declared.
No examples provided.
arthur_list_units List units ~223
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.
| Name | Type | Req | Description |
|---|---|---|---|
| _q | string | – | – |
| available_move_in_date | string | – | Calendar date in YYYY-MM-DD format. |
| available_move_out_date | string | – | Calendar date in YYYY-MM-DD format. |
| city | string | – | – |
| direction | string | – | Sort direction (default ASC when sorting). |
| limit | integer | – | Records per page, 1–100 (default 20). |
| page | integer | – | Results page (default 1). Read pagination.pageCount before requesting the next page. |
| postcode | string | – | – |
| sort | string | – | Vendor field to sort by, for example id or created. |
| unit_owner_id | integer | – | Arthur numeric record id, from the corresponding list tool. |
| unit_ref | string | – | – |
| unit_status | string | – | – |
| unit_vacant | boolean | – | – |
No output schema declared.
No examples provided.
arthur_list_workorders List workorders ~206
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.
| Name | Type | Req | Description |
|---|---|---|---|
| _q | string | – | – |
| contractor | string | – | – |
| direction | string | – | Sort direction (default ASC when sorting). |
| due_date | string | – | Calendar date in YYYY-MM-DD format. |
| emergency | boolean | – | – |
| limit | integer | – | Records per page, 1–100 (default 20). |
| page | integer | – | Results page (default 1). Read pagination.pageCount before requesting the next page. |
| quote_required | boolean | – | – |
| ref | string | – | – |
| sort | string | – | Vendor field to sort by, for example id or created. |
| start_date | string | – | Calendar date in YYYY-MM-DD format. |
| status | string | – | – |
| title | string | – | – |
No output schema declared.
No examples provided.
How do I install the Arthur Online MCP by usefulapi server?
Arthur Online MCP by usefulapi is a hosted endpoint at https://arthur-online.usefulapi.io/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · arthur-online.usefulapi.io
claude mcp add --transport http io-usefulapi-arthur-online 'https://arthur-online.usefulapi.io/mcp'
What is the Arthur Online MCP by usefulapi server?
Arthur Online MCP by usefulapi is listed in the public MCP registry as io.usefulapi/arthur-online. Read Arthur properties, units and tenancies; track maintenance and add tasks or notes. This page covers its hosted endpoint (https://arthur-online.usefulapi.io/mcp).
Is the Arthur Online MCP by usefulapi server safe to use?
Arthur Online MCP by usefulapi scores 18 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Arthur Online MCP by usefulapi server expose?
Arthur Online MCP by usefulapi exposes 20 tools: arthur_list_properties, arthur_get_property, arthur_list_units, arthur_get_unit, arthur_list_tenancies, and 15 more. Their descriptions and schemas cost roughly 2,574 tokens of context every time the server is loaded.
Does the Arthur Online MCP by usefulapi server require authentication?
Its publisher declares no required credentials for Arthur Online MCP by usefulapi. We have not been able to confirm that against the live endpoint, and a server can require authorisation without declaring it here.
Is the Arthur Online MCP by usefulapi server still maintained?
Arthur Online MCP by usefulapi is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.
What did VerifyMCP test on the Arthur Online MCP by usefulapi server?
VerifyMCP ran 4 checks on Arthur Online MCP by usefulapi, covering TLS certificate, HSTS header, DNSSEC and Transport. 7 items could not be completed, a gap on our side rather than a finding about Arthur Online MCP by usefulapi: Authorization, HTTPS, Schema quality, Stability and 3 more. 5 categories score 0 for that reason, because we only credit what we can confirm. Supply Chain Security and Provenance & Transparency do not apply to a hosted endpoint, so they were not tested. The score does not measure everything, and the scoring documentation lists what it leaves out.