Invoice Ninja MCP by usefulapi
Manage Invoice Ninja clients, invoices, quotes, expenses, tasks and projects.
Connect it
Settings → Connectors → Add custom connector
URL: https://invoice-ninja.usefulapi.io/mcpSettings → Apps & Connectors → Advanced → Developer mode
Create connector with URL: https://invoice-ninja.usefulapi.io/mcp{
"mcpServers": {
"invoice-ninja": {
"url": "https://invoice-ninja.usefulapi.io/mcp"
}
}
}claude mcp add --transport http invoice-ninja https://invoice-ninja.usefulapi.io/mcp{
"servers": {
"invoice-ninja": {
"type": "http",
"url": "https://invoice-ninja.usefulapi.io/mcp"
}
}
}24 tools, verified live
invoiceninja_list_clientsread-onlyList clients with balances and contacts, optionally searched by name, email or number. Invoice Ninja: GET /api/v1/clients.
invoiceninja_get_clientread-onlyFetch one client by id, with contacts, address, balance and paid-to-date. Invoice Ninja: GET /api/v1/clients/{id}.
invoiceninja_list_invoicesread-onlyList 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_get_invoiceread-onlyFetch one invoice by id — line items, totals, balance, dates, status and invitations. Invoice Ninja: GET /api/v1/invoices/{id}.
invoiceninja_list_quotesread-onlyList quotes (estimates), filterable by client and quote status. Invoice Ninja: GET /api/v1/quotes.
invoiceninja_get_quoteread-onlyFetch 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_productsread-onlyList products / services in the catalog with price, cost and default taxes. Invoice Ninja: GET /api/v1/products.
invoiceninja_list_paymentsread-onlyList 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_expensesread-onlyList expenses, filterable by client and invoicing/payment state. Invoice Ninja: GET /api/v1/expenses.
invoiceninja_list_vendorsread-onlyList vendors (suppliers) with contacts and address. Invoice Ninja: GET /api/v1/vendors.
invoiceninja_list_tasksread-onlyList tasks / time entries with their time_log, duration, rate and linked client, project and invoice. Invoice Ninja: GET /api/v1/tasks.
invoiceninja_list_projectsread-onlyList projects with client, budgeted hours, task rate, current hours and due date. Invoice Ninja: GET /api/v1/projects.
invoiceninja_list_recurring_invoicesread-onlyList recurring invoice schedules with frequency, next send date and remaining cycles. Read-only. Invoice Ninja: GET /api/v1/recurring_invoices.
invoiceninja_create_clientcan modifyCreate a client, optionally with contacts. Give at least a name or one contact. Invoice Ninja: POST /api/v1/clients.
invoiceninja_update_clientcan modifyUpdate a client's details; only the fields you pass change. Passing contacts replaces the contact list. Invoice Ninja: PUT /api/v1/clients/{id}.
invoiceninja_create_invoicecan modifyCreate 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_update_invoicecan modifyEdit 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}.
invoiceninja_mark_invoice_sentcan modifyMark 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_email_invoicecan modifyOUTWARD-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_create_quotecan modifyCreate a DRAFT quote (estimate) for a client. Nothing is emailed. Invoice Ninja: POST /api/v1/quotes.
invoiceninja_convert_quote_to_invoicecan modifyConvert 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_expensecan modifyLog an expense, optionally tied to a vendor, client or project and flagged to be re-invoiced. Invoice Ninja: POST /api/v1/expenses.
invoiceninja_create_taskcan modifyCreate a task, optionally with logged time entries, for a client or project. Invoice Ninja: POST /api/v1/tasks.
invoiceninja_create_projectcan modifyCreate a project for a client, with an optional hourly task rate, budget and due date. Invoice Ninja: POST /api/v1/projects.
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