> ## 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.

# Opportunity

### Definition

An opportunity represents a potential deal or sales prospect tracked in the invoicing software. It holds the expected revenue, the stage in the sales pipeline, and the associated contact.

### Purpose

Opportunities let sales teams track deals before they become invoices.

### Relationships

* Linked to a contact.
* Can lead to one or more invoices.

### Endpoints

| Method | Endpoint                                                                                    | Description                         |
| ------ | ------------------------------------------------------------------------------------------- | ----------------------------------- |
| GET    | [Retrieve all opportunities](/api-reference/endpoints/invoicing/retrieve-all-opportunities) | Returns a list of all opportunities |
| GET    | [Retrieve one opportunity](/api-reference/endpoints/invoicing/retrieve-one-opportunity)     | Returns a single opportunity by ID  |

### See also

* [Contacts](/unified-apis/invoicing/concepts/contact)
* [Invoices](/unified-apis/invoicing/concepts/invoice)