# Invoice Ninja API Documentation

This is the complete API documentation for connecting to the Invoice Ninja API using MindCloud's Universal API.

MindCloud offers one normalized API to access 3,400+ apps from a single place. It centralizes authentication and normalizes app APIs so they are easier and more consistent to use.

## Quickstart

1. A **MindCloud account** — sign in or create an account at [MindCloud](https://app.mindcloud.co).
2. A **MindCloud API Key** — create one in [API Keys](https://app.mindcloud.co/user/api-keys). Keep it on your server.
3. At least one **Invoice Ninja connection** — create or choose one in [Connections](https://app.mindcloud.co/credentials). Note its `connectionId`.

```text
POST https://connect.mindcloud.co/v2/universal/apps/invoiceNinja/actions/{actionSlug}/run
```

## Invoice Ninja actions

- PUT `bulk-client-actions` Bulk Client Actions
- PUT `bulk-invoice-actions` Bulk Invoice Actions
- PUT `bulk-quote-actions` Bulk Quote Actions
- GET `client-statement-pdf` Client Statement PDF
- POST `create-client` Create Client
- POST `create-expense` Create Expense
- POST `create-invoice` Create Invoice
- POST `create-payment` Create Payment
- POST `create-product` Create Product
- POST `create-quote` Create Quote
- POST `create-recurring-invoice` Create Recurring Invoice
- POST `create-vendor` Create Vendor
- PUT `custom-invoice-action` Custom Invoice Action
- PUT `custom-quote-action` Custom Quote Action
- GET `download-invoice-pdf` Download Invoice PDF
- GET `download-quote-pdf` Download Quote PDF
- GET `list-clients` List Clients
- GET `list-expenses` List Expenses
- GET `list-invoices` List Invoices
- GET `list-payment-terms` List Payment Terms
- GET `list-payments` List Payments
- GET `list-products` List Products
- GET `list-quotes` List Quotes
- GET `list-recurring-invoices` List Recurring Invoices
- GET `list-tax-rates` List Tax Rates
- GET `list-vendors` List Vendors
- PUT `refund-payment` Refund Payment
- GET `show-client` Show Client
- GET `show-invoice` Show Invoice
- GET `show-payment` Show Payment
- GET `show-product` Show Product
- GET `show-quote` Show Quote
- GET `show-recurring-invoice` Show Recurring Invoice
- PUT `update-client` Update Client
- PUT `update-invoice` Update Invoice
- PUT `update-payment` Update Payment
- PUT `update-product` Update Product
- PUT `update-quote` Update Quote
- PUT `update-recurring-invoice` Update Recurring Invoice
- PUT `update-tax-data` Update Tax Data