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Independent measurements of remote MCP servers. Every observation has a timestamp.

Read-only probes

MCP server · Payments & trading

Invoices Online MCP by usefulapi

By usefulapi.io Verified namespace

Read clients, balances, invoices and jobcard status; create clients in Invoices Online.

WebsiteSource code
Connect to Invoices Online MCP by usefulapi
Checks passed
13 / 22

1 failed · 8 not measured

Median response
174 ms

Median of successful probes over 7 days

30-day uptime
Not measured

Share of countable probes over 30 days, including daily rollups. Auth challenges are excluded.

Discovered tools
13

Tool definitions returned by this server

Independent monitoring

Health & checks

Status history

Responded

The server completed its last measured handshake. This is an observation, not a guarantee.

Last checked . Not enough checks yet
Check summary by test group
Test areaPassedFailedUnmeasured
ConnectionCan a client connect and discover tools?
500
Reliability & speedDoes it respond consistently and quickly?
004
Access & authenticationWhat is required to use this server?
102
Tool qualityAre the tool definitions usable by an agent?
310
Publisher identityCan the publisher be traced to its source?
402

Unmeasured means there is not enough evidence to decide. How these checks work

Inspect individual checks 22 recorded

Core

  • Pass
    Reachable

    Latest probe returned HTTP 200 in 174 ms.

  • Pass
    Valid handshake

    protocolVersion 2025-11-25, serverInfo.name invoices-online-mcp.

  • Pass
    Lists tools

    tools/list returned 13 tools.

  • Pass
    Current protocol

    Negotiated 2025-11-25. The bar is 2025-06-18 or newer.

  • Pass
    HTTPS

    The endpoint URL is https.

Performance

  • Not measured
    Fast (p50)

    Median latency 174 ms over 1 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 174 ms over 1 samples in 7 days. The bar is 3000 ms. Need at least 20 samples.

  • Not measured
    Reliable (uptime)

    1 of 1 attempts returned a tool list in 30 days (100%). The bar is 99%. Need at least 30 samples.

  • Not measured
    Stable tool list

    Fewer than two successful probes in 30 days, so tool-list stability is not measured.

Access

  • Pass
    Open access

    tools/list succeeded with no credential, and the record declares none.

  • Not measured
    Standard auth

    Auth is not required, so the OAuth metadata check does not apply.

  • Not measured
    Free tier cited

    No publisher quote has been checked.

Tools

  • Pass
    Tools described

    Every tool description is at least 20 characters.

  • Pass
    Valid input schemas

    Every inputSchema is a JSON Schema object.

  • Pass
    Parameters documented

    32 of 32 parameters have a description (100%). The bar is 80%.

  • Fail
    Safety hints

    1 tools set neither readOnlyHint nor destructiveHint.

Publisher

  • Pass
    Verified namespace

    Listed in the Official MCP Registry.

  • Pass
    Website matches publisher

    The website host matches the reverse-domain namespace.

  • Pass
    Source repo linked

    A repository URL is on file.

  • Not measured
    Repo owner matches

    This namespace is not an io.github login, so the owner comparison does not apply.

  • Pass
    Recently updated

    Updated 2026-11-11T20:08:07.185066Z, within 180 days.

  • Not measured
    Open-source licence

    The GitHub licence lookup has not returned an OSI result yet.

Start using Invoices Online MCP by usefulapi

Connect to this server

Choose your client, copy the configuration, then enable the server in your client’s MCP settings.

Run this command in your terminal, then restart Claude Code.

Claude Code

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

Capabilities

Tools 13

invoicesonline_create_client

Create a client in the business. Writes data. Only the invoice name and email are required. If the API finds a matching client, it returns that client's id and creates no duplicate. Endpoint: NewClient.php. Sends no email.

Discovered
invoicesonline_find_client_id

Look up the client_id from the invoice name, email and branch name. Read only. Endpoint: GetClientID.php. Returns the id, or the vendor's error text when no client matches.

Discovered
invoicesonline_get_business

Get the id and name of the Invoices Online business this API login belongs to. Read only. Endpoint: getBusinessName.php.

Discovered
invoicesonline_get_client

Get one client by client_id: contact details, active flag, current balance and opening balance. Read only. Endpoint: getClientDetails_JSON.php.

Discovered
invoicesonline_get_client_history

List a client's invoices, credit notes, pro-forma invoices, payments and payouts with totals and line items, plus the current and opening balance. Read only. Endpoint: getClientHistory_JSON.php.

Discovered
invoicesonline_get_document_status

Get the current status name and status id of one jobcard by its number. Read only. Endpoint: getDocumentStatus.php. Only jobcard is supported.

Discovered
invoicesonline_get_document_status_ids

List the status ids and their names for one document type. Read only. Endpoint: getDocumentStatusIDs.php.

Discovered
invoicesonline_get_supplier

Get one supplier by supplier_id: contact details, active flag, balance and opening balance. Read only. Endpoint: getSupplierDetails_JSON.php.

Discovered
invoicesonline_list_client_documents

List one client's documents of one type (invoices, quotes, credit notes, jobcards, and so on). Read only. Endpoint: getDocumentsByType_JSON.php.

Discovered
invoicesonline_list_clients

List every client of the business: name, contact, email, VAT number, addresses, active flag, balance and opening balance. Read only. Endpoint: getClients_JSON.php.

Discovered
invoicesonline_list_inventory_categories

List the inventory categories keyed by category id. Read only. Endpoint: InventoryCategories.php.

Discovered
invoicesonline_list_inventory_items

List the inventory and stock items keyed by product code. Read only. Endpoint: InventoryItems.php.

Discovered
invoicesonline_list_suppliers

List every supplier of the business with contact details, active flag, balance and opening balance. Read only. Endpoint: getSuppliers_JSON.php.

Discovered

Recent measurements

Probe history

View status
Latest stored probes. Raw probe rows are kept for 90 days.
CheckedResultResponseTools
Connected174 ms13

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