Invoice Ninja API

14 endpoints for Invoice Ninja, each at its own method and path, called with your API key. Open an endpoint for its inputs, examples and response.

Base URL: https://cotlet.dev/api/v1/invoice-ninja
Connects with: Your own Invoice Ninja account on invoicing.co, with permission to create invoices, quotes, payments and clients
Integration page: Invoice Ninja

Read (6)

Return data and change nothing in the account.

Invoice Ninja Endpoints: Read
Endpoint	Description
GET /clients	Clients with ID, contact, currency, paid to date and outstanding balance.
GET /invoices	Invoices with client, status, dates, amount and balance, newest first.
GET /invoices/{invoice_number}	One invoice with line items, contacts, linked payments and the email history.
GET /quotes	Quotes with client, status, valid-until date and amount.
GET /payments	Payments with client, date, amount, type, reference and the invoices they were applied to.
GET /products	Products from your product library with description and unit price.

Change the account. Calls marked Confirm wait for the user to approve them.

Invoice Ninja Endpoints: Write
Endpoint	Description
POST /clients	Add a client with one contact, optionally with the currency to bill in.
POST /clients/{client_id}/invoices	Create a draft invoice for a client with line items, dates and notes.
POST /clients/{client_id}/quotes	Create a draft quote for a client with line items and a valid-until date.
POST /invoices/{invoice_number} Confirm	Email an invoice, or a reminder for it, to the contacts that receive it.
POST /quotes/{quote_number} Confirm	Email a quote to the contacts that receive it.
POST /quotes/{quote_number}/to-invoice/convert Confirm	Turn an approved quote into an invoice and link the two.
POST /invoices/{invoice_number}/payments Confirm	Record money received against an invoice, with date, type and bank reference.
POST /invoices/{invoice_number}/cancel Confirm	Cancel a sent invoice: its balance goes to zero and the client balance drops.