Invoice Ninja MCP by usefulapi MCP Server

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answering

Invoice Ninja MCP by usefulapi is answering right now. Last checked 12 min ago. It exposes 24 tools. Last commit 10 Oct 2026.

Manage Invoice Ninja clients, invoices, quotes, expenses, tasks and projects.

Uptime history 13 days of history

13 days agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

133 ms

Response time

average over 24h

Stars

last commit 10 Oct 2026

What changed 7

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 30 September 2026. No other catalogue keeps this.

9 Oct a tool changed version4 times that day

1 Oct a tool changed version

30 Sep a tool changed version2 times that day

and 4 more, back to 30 September 2026

Nothing serious here today

Today is the operative word: we check Invoice Ninja 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 12 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add invoice-ninja --transport http https://invoice-ninja.usefulapi.io/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "invoice-ninja": {
      "url": "https://invoice-ninja.usefulapi.io/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.invoice-ninja]
url = "https://invoice-ninja.usefulapi.io/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "invoice-ninja": {
      "url": "https://invoice-ninja.usefulapi.io/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "invoice-ninja": {
      "url": "https://invoice-ninja.usefulapi.io/mcp"
    }
  }
}

Available tools 24

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

invoiceninja

invoiceninja_convert_quote_to_invoice

Convert a quote into a new invoice (the quote is marked converted and links to it). Returns the new invoice. Invoice Ninja: GET /api/v1/quotes/{id}/convert_to_invoice.

invoiceninja_create_client

Create a client, optionally with contacts. Give at least a name or one contact. Invoice Ninja: POST /api/v1/clients.

invoiceninja_create_expense

Log an expense, optionally tied to a vendor, client or project and flagged to be re-invoiced. Invoice Ninja: POST /api/v1/expenses.

invoiceninja_create_invoice

Create a DRAFT invoice for a client. It is not sent or emailed — use invoiceninja_mark_invoice_sent or invoiceninja_email_invoice afterwards. Invoice Ninja: POST /api/v1/invoices.

invoiceninja_create_project

Create a project for a client, with an optional hourly task rate, budget and due date. Invoice Ninja: POST /api/v1/projects.

invoiceninja_create_quote

Create a DRAFT quote (estimate) for a client. Nothing is emailed. Invoice Ninja: POST /api/v1/quotes.

invoiceninja_create_task

Create a task, optionally with logged time entries, for a client or project. Invoice Ninja: POST /api/v1/tasks.

invoiceninja_email_invoice

OUTWARD-FACING: sends a real email with the invoice to the client's invited contacts, and marks the invoice sent. Cannot be unsent — confirm with the user first. Invoice Ninja: POST /api/v1/invoices/bulk with action=email.

invoiceninja_get_client

Fetch one client by id, with contacts, address, balance and paid-to-date. Invoice Ninja: GET /api/v1/clients/{id}.

invoiceninja_get_invoice

Fetch one invoice by id — line items, totals, balance, dates, status and invitations. Invoice Ninja: GET /api/v1/invoices/{id}.

invoiceninja_get_quote

Fetch one quote by id — line items, totals, status and the invoice it was converted to (invoice_id), if any. Invoice Ninja: GET /api/v1/quotes/{id}.

invoiceninja_list_clients

List clients with balances and contacts, optionally searched by name, email or number. Invoice Ninja: GET /api/v1/clients.

invoiceninja_list_expenses

List expenses, filterable by client and invoicing/payment state. Invoice Ninja: GET /api/v1/expenses.

invoiceninja_list_invoices

List invoices, filterable by client and payment status (paid / unpaid / overdue). status_id on each invoice: 1 draft, 2 sent, 3 partial, 4 paid, 5 cancelled, 6 reversed. Invoice Ninja: GET /api/v1/invoices.

invoiceninja_list_payments

List payments received, with amount, date, refunded/applied totals and the invoices each was applied to (paymentables). Read-only: this server never records or refunds payments. Invoice Ninja: GET /api/v1/payments.

invoiceninja_list_products

List products / services in the catalog with price, cost and default taxes. Invoice Ninja: GET /api/v1/products.

invoiceninja_list_projects

List projects with client, budgeted hours, task rate, current hours and due date. Invoice Ninja: GET /api/v1/projects.

invoiceninja_list_quotes

List quotes (estimates), filterable by client and quote status. Invoice Ninja: GET /api/v1/quotes.

invoiceninja_list_recurring_invoices

List recurring invoice schedules with frequency, next send date and remaining cycles. Read-only. Invoice Ninja: GET /api/v1/recurring_invoices.

invoiceninja_list_tasks

List tasks / time entries with their time_log, duration, rate and linked client, project and invoice. Invoice Ninja: GET /api/v1/tasks.

invoiceninja_list_vendors

List vendors (suppliers) with contacts and address. Invoice Ninja: GET /api/v1/vendors.

invoiceninja_mark_invoice_sent

Mark a draft invoice as sent WITHOUT emailing it. This moves it out of draft and adds its amount to the client's balance. Invoice Ninja: GET /api/v1/invoices/{id}/mark_sent.

invoiceninja_update_client

Update a client's details; only the fields you pass change. Passing contacts replaces the contact list. Invoice Ninja: PUT /api/v1/clients/{id}.

invoiceninja_update_invoice

Edit an invoice; only the fields you pass change, but line_items (if passed) replace every existing line. Does not send anything. Invoice Ninja: PUT /api/v1/invoices/{id}.

Endpoints

URL	Transport	State	Latency	Checked
https://invoice-ninja.usefulapi.io/mcp	streamable-http	answering	95 ms	12 min ago

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Invoice Ninja MCP by usefulapi — questions

Answers built from our own checks of this server.

What can Invoice Ninja MCP by usefulapi do?

It exposes 24 tools, read directly from the server on our last check. Among them: invoiceninja_convert_quote_to_invoice, invoiceninja_create_client, invoiceninja_create_expense, invoiceninja_create_invoice, invoiceninja_create_project, invoiceninja_create_quote and 18 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 Invoice Ninja MCP by usefulapi working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 133 ms. The bar chart above shows every period we have measured.

How do I connect Invoice Ninja MCP by usefulapi?

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

Does Invoice Ninja MCP by usefulapi need an API key?

No. Invoice Ninja MCP by usefulapi completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 24 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Invoice Ninja MCP by usefulapi?

It answers our handshake in 133 ms on average, which is faster than 75% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is Invoice Ninja MCP by usefulapi open source?

Yes — it is published under the MIT licence, written in JavaScript, 0 stars on GitHub and 1 open issue. The source link is on this page, so you can read exactly what it does with your data before you connect it.