API Reference

Sending an Invoice

Overview

Assuming you've set up your account and have a valid API Key, this is what the first send invoice flow should look like.

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What's on an invoice?

Invoices are a critical part of every business workflow. Each invoice should contain the following information:

  • The business who provided a service or product
  • The intended invoice recipient
  • The services or products provided
  • The total amount outstanding and associated taxes

Setting up to send

  • Step 1: Create Business Businesses represent the entity you'll be sending invoices on behalf of. Slick associates any and all invoices with a business id. The information you store here can be retrieved and used to populate an invoice. We ask you to send this to us in the headers as x-business-id.
  • Step 2: Create Contact. Contacts the intended recipient of an invoice.

Sending an invoice