---
title: "Authentication"
slug: "authentication"
updated: 2025-04-30T20:49:05Z
published: 2025-04-30T20:49:05Z
canonical: "help.yahooinc.com/authentication"
---

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

# Authentication

The Yahoo DSP API is a service that provides Yahoo and partner developers with RESTful access to Yahoo DSP advertising and reporting features. You can use these services to programmatically monitor, create, and manage advertising campaigns.

Yahoo DSP API supports the industry-standard OAuth 2.0 protocol for authorization. Refer to [Setup & Access Guide](/dsp-api/docs/setup-access-guide) for setup instructions.

> [!WARNING]
> Important
> 
> To use the Yahoo Conversion API, implement a separate direct OAuth 2.0 authentication. Refer to [Standard Yahoo Conversion API](/dsp-api/docs/standard-yahoo-conversion-api) for details.