# [Velo](https://dev.wix.com/docs/api/get-menu-content?url=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo&format=markdown) ## [APIs](https://dev.wix.com/docs/api/v1/get-menu-content?url=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis&format=markdown) ### [wix-billing-backend](https://dev.wix.com/docs/api/v1/get-menu-content?url=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend&format=markdown) - [Introduction](https://dev.wix.com/docs/api/v1/get-menu-content?url=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Fintroduction&format=markdown) #### [Events](https://dev.wix.com/docs/api/v1/get-menu-content?url=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Fevents&format=markdown) - [Introduction](https://dev.wix.com/docs/api/v1/get-menu-content?url=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Fevents%2Fintroduction&format=markdown) - [onInvoiceCreated()](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Fevents%2Fon-invoice-created&format=markdown) | [Schema](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Fevents%2Fon-invoice-created&format=markdown&schema=true) - [onInvoiceOverdue()](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Fevents%2Fon-invoice-overdue&format=markdown) | [Schema](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Fevents%2Fon-invoice-overdue&format=markdown&schema=true) - [onInvoicePaid()](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Fevents%2Fon-invoice-paid&format=markdown) | [Schema](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Fevents%2Fon-invoice-paid&format=markdown&schema=true) - [onInvoiceSent()](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Fevents%2Fon-invoice-sent&format=markdown) | [Schema](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Fevents%2Fon-invoice-sent&format=markdown&schema=true) - [onPriceQuoteAccepted()](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Fevents%2Fon-price-quote-accepted&format=markdown) | [Schema](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Fevents%2Fon-price-quote-accepted&format=markdown&schema=true) - [onPriceQuoteCreated()](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Fevents%2Fon-price-quote-created&format=markdown) | [Schema](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Fevents%2Fon-price-quote-created&format=markdown&schema=true) - [onPriceQuoteExpired()](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Fevents%2Fon-price-quote-expired&format=markdown) | [Schema](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Fevents%2Fon-price-quote-expired&format=markdown&schema=true) - [onPriceQuoteSent()](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Fevents%2Fon-price-quote-sent&format=markdown) | [Schema](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Fevents%2Fon-price-quote-sent&format=markdown&schema=true) #### [Invoices](https://dev.wix.com/docs/api/v1/get-menu-content?url=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Finvoices&format=markdown) - [Introduction](https://dev.wix.com/docs/api/v1/get-menu-content?url=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Finvoices%2Fintroduction&format=markdown) - [addPayment()](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Finvoices%2Fadd-payment&format=markdown) | [Schema](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Finvoices%2Fadd-payment&format=markdown&schema=true) - [createInvoice()](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Finvoices%2Fcreate-invoice&format=markdown) | [Schema](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Finvoices%2Fcreate-invoice&format=markdown&schema=true) - [createInvoicePreviewUrl()](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Finvoices%2Fcreate-invoice-preview-url&format=markdown) | [Schema](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Finvoices%2Fcreate-invoice-preview-url&format=markdown&schema=true) - [deleteInvoice()](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Finvoices%2Fdelete-invoice&format=markdown) | [Schema](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Finvoices%2Fdelete-invoice&format=markdown&schema=true) - [getInvoice()](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Finvoices%2Fget-invoice&format=markdown) | [Schema](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Finvoices%2Fget-invoice&format=markdown&schema=true) - [sendInvoice()](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Finvoices%2Fsend-invoice&format=markdown) | [Schema](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Finvoices%2Fsend-invoice&format=markdown&schema=true) - [updateInvoice()](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Finvoices%2Fupdate-invoice&format=markdown) | [Schema](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Finvoices%2Fupdate-invoice&format=markdown&schema=true) - [voidInvoice()](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Finvoices%2Fvoid-invoice&format=markdown) | [Schema](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Finvoices%2Fvoid-invoice&format=markdown&schema=true) #### [PriceQuotes](https://dev.wix.com/docs/api/v1/get-menu-content?url=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Fprice-quotes&format=markdown) - [Introduction](https://dev.wix.com/docs/api/v1/get-menu-content?url=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Fprice-quotes%2Fintroduction&format=markdown) - [createPriceQuote()](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Fprice-quotes%2Fcreate-price-quote&format=markdown) | [Schema](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Fprice-quotes%2Fcreate-price-quote&format=markdown&schema=true) - [deletePriceQuote()](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Fprice-quotes%2Fdelete-price-quote&format=markdown) | [Schema](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Fprice-quotes%2Fdelete-price-quote&format=markdown&schema=true) - [getPriceQuote()](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Fprice-quotes%2Fget-price-quote&format=markdown) | [Schema](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Fprice-quotes%2Fget-price-quote&format=markdown&schema=true) - [sendPriceQuote()](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Fprice-quotes%2Fsend-price-quote&format=markdown) | [Schema](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Fprice-quotes%2Fsend-price-quote&format=markdown&schema=true) - [updatePriceQuote()](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Fprice-quotes%2Fupdate-price-quote&format=markdown) | [Schema](https://dev.wix.com/rawdocs/api/get-article-content?articleUrl=https%3A%2F%2Fdev.wix.com%2Fdocs%2Fvelo%2Fapis%2Fwix-billing-backend%2Fprice-quotes%2Fupdate-price-quote&format=markdown&schema=true)