Visitor Identification API Technical Specs & Reference

Detailed technical specifications for Visitor Identification API including version v3 data.

📅 Last updated: April 20, 2026

Visitor Identification API Overview

The Visitor Identification API allows you to pass identification information to the HubSpot chat widget for otherwise unknown visitors that were verified by your own authentication system….

Technical Specifications

Attribute	Details
Provider	hubapi.com
Current Version	v3
Format	OpenAPI / JSON

Integration Information

Reference for version v3.

Disclaimer: Data sourced from APIs.guru.

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API Client API Overview

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Technical Specifications

Attribute	Details
Provider	azure.com
Current Version	2019-08-01
Format	OpenAPI / JSON

Integration Information

Reference for version 2019-08-01.

Disclaimer: Data sourced from APIs.guru.

API Technical Specs & Reference

API Overview

This document is intended as a detailed reference for the precise behavior of the drchrono API. If this is your first time using the API, start with our tutorial. If you are upgrading from a previous version, take a look at the changelog section.

Authorization

Initial authorization

There are three main steps in the OAuth 2.0 authentication workflow:

API Technical Specs & Reference

API Overview

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Technical Specifications

Attribute	Details
Provider	hubapi.com
Current Version	v1
Format	OpenAPI / JSON

Integration Information

Reference for version v1.

Disclaimer: Data sourced from APIs.guru.