Overview

The Viant Data Platform (VDP) Connect's Audience API enables you to seamlessly onboard, manage, and activate your first-party audience data directly within your Viant DSP account. Additionally VDP Connect now supports "Conversion API (CAPI)" to onboard online/offline conversion data to activate measurement, reporting and performance optimizations.

This guide provides step-by-step instructions to help you:

Get started with the API
Manage authentication
Prepare your data before hashing
Create and manage audience segments
Update or build new audience segments
Expire outdated segments
Submit user opt-out requests to maintain compliance
(NEW) Onboard online and offline conversion data

Note: All audiences created via the API will be available for activation under: Targeting > Data > 1st Party Segments in the Viant DSP UI.

Getting Started

To begin using the VDP Connect API, follow these steps:

1. Request API Access

Share your name, email, title, and company name with your Viant representative.

2. Sign API Agreement

You’ll need to review and sign Viant’s API Terms & Conditions before credentials can be issued.

3. Receive Your Credentials

For Advertisers/Agencies: You’ll receive an activation email with your API credentials.

Note: These credentials are separate from your Viant DSP login.
For CDPs/Data Partners: Provide a redirect URL to Viant. Viant will then generate your userID, password, and client_id.

4. Authenticate

Use your credentials to generate an authentication token. This will allow you to make authorized API requests.

5. Start Building

Use the API endpoints described below to integrate, test, and launch your audience workflows.

Environment & Conventions

Item	Value
Base URL	`https://vdp-connect-api.viantinc.com`
Content-Type	`application/json` OR `application/x-form-urlencoded`
Auth Header	`Authorization: Bearer <access_token>`