> ## Documentation Index
> Fetch the complete documentation index at: https://docs.chift.eu/llms.txt
> Use this file to discover all available pages before exploring further.

# Contacts

### Definition

A contact is a customer or supplier record in the invoicing software. It holds a name, address, email, and optionally a VAT number or tax identifier.

### Purpose

Contacts identify who an invoice is issued to or received from. The invoicing software uses the contact to populate the invoice header.

### Relationships

* Referenced by invoices and opportunities.

### Endpoints

| Method | Endpoint                                                                          | Description                     |
| ------ | --------------------------------------------------------------------------------- | ------------------------------- |
| GET    | [Retrieve all contacts](/api-reference/endpoints/invoicing/retrieve-all-contacts) | Returns a list of all contacts. |