MCP server

Invoice Ninja MCP by usefulapi

io.usefulapi/invoice-ninja

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

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

Website Source

At a glance

Type

MCP server

Publisher

usefulapi.io (verified by the MCP Registry)

Status

Working at last check

Tools

24

Token cost

About 7,913 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

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

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

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

Gemini CLI

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

Cursor

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

VS Code

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

Antigravity

agy mcp add invoice-ninja https://invoice-ninja.usefulapi.io/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"invoice-ninja","server_url":"https://invoice-ninja.usefulapi.io/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"invoice-ninja","server_url":"https://invoice-ninja.usefulapi.io/mcp"}

Tools

• invoiceninja_convert_quote_to_invoice ~133 tokens
  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 ~367 tokens
  Create a client, optionally with contacts. Give at least a name or one contact. Invoice Ninja: POST /api/v1/clients.
• invoiceninja_create_expense ~365 tokens
  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 Moves money · ~738 tokens
  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 ~240 tokens
  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 ~715 tokens
  Create a DRAFT quote (estimate) for a client. Nothing is emailed. Invoice Ninja: POST /api/v1/quotes.
• invoiceninja_create_task ~359 tokens
  Create a task, optionally with logged time entries, for a client or project. Invoice Ninja: POST /api/v1/tasks.
• invoiceninja_email_invoice ~208 tokens
  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 ~115 tokens
  Fetch one client by id, with contacts, address, balance and paid-to-date. Invoice Ninja: GET /api/v1/clients/{id}.
• invoiceninja_get_invoice ~120 tokens
  Fetch one invoice by id — line items, totals, balance, dates, status and invitations. Invoice Ninja: GET /api/v1/invoices/{id}.
• invoiceninja_get_quote ~123 tokens
  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 ~361 tokens
  List clients with balances and contacts, optionally searched by name, email or number. Invoice Ninja: GET /api/v1/clients.
• invoiceninja_list_expenses ~319 tokens
  List expenses, filterable by client and invoicing/payment state. Invoice Ninja: GET /api/v1/expenses.
• invoiceninja_list_invoices ~389 tokens
  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 ~320 tokens
  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 ~264 tokens
  List products / services in the catalog with price, cost and default taxes. Invoice Ninja: GET /api/v1/products.
• invoiceninja_list_projects ~290 tokens
  List projects with client, budgeted hours, task rate, current hours and due date. Invoice Ninja: GET /api/v1/projects.
• invoiceninja_list_quotes ~320 tokens
  List quotes (estimates), filterable by client and quote status. Invoice Ninja: GET /api/v1/quotes.
• invoiceninja_list_recurring_invoices ~306 tokens
  List recurring invoice schedules with frequency, next send date and remaining cycles. Read-only. Invoice Ninja: GET /api/v1/recurring_invoices.
• invoiceninja_list_tasks ~330 tokens
  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 ~256 tokens
  List vendors (suppliers) with contacts and address. Invoice Ninja: GET /api/v1/vendors.
• invoiceninja_mark_invoice_sent ~134 tokens
  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 ~405 tokens
  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 ~736 tokens
  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}.

Browse

• Email
• Payments
• Invoicing and accounting

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