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

# Opt your customer out of the address registry

> Set your customer's default to opted out. Workspaces without their own setting will follow this default. No request body. Returns `OPTED_OUT`. If the customer for this workspace cannot be determined, returns HTTP 404 with error code **2147**.



## API Specification

The full API specification for this endpoint is available in the [documentation index](https://developers.fireblocks.com/llms.txt).