---
title: IAB Tier 3 Content Classification API
slug: classify-iab-tier-3
url: https://apyhub.com/dosvak/service/classify-iab-tier-3
provider: Dosvak LLC
categories: [Artificial Intelligence]
tags: [iab-classification, content-classification, taxonomy, ad-targeting, ml-classification]
auth: api_key
---

# IAB Tier 3 Content Classification API

Classify a URL, text, title, domain, or keywords into IAB Tier 3 labels. Returns a tier and ranked predictions with scores for content tagging.

## Endpoints

| Method | Path | Description | Atoms |
| --- | --- | --- | --- |
| POST | `` | What it does Predicts IAB Tier 3 categories from the input content signals you provide. It accepts… | 10 |

## About

## What it does
IAB Category Classifier predicts IAB Tier 3 categories from a URL, page text, title, domain, or keywords. Send one or more of those signals along with an optional `top_k` value, and it returns the detected `tier` plus a ranked `predictions` array with each label and score.

Use it when you need to map articles, landing pages, or feed items into an IAB taxonomy for ad targeting, content routing, or reporting. If you only have a headline and a short snippet, you can classify that too; if you have the full page text or URL, the classifier can use that context as well.

The response is compact and easy to consume: `tier` tells you which IAB level was predicted, and `predictions` gives you the most likely category labels in descending order. Set `top_k` from 1 to 20 to control how many matches you receive.

IAB Category Classifier fits workflows that need consistent content tagging without maintaining a custom taxonomy lookup table. It is designed for batch enrichment and real-time classification alike.

## Usage

Authenticate with an ApyHub API key in the `apy-token` header.
Full docs and a live playground: https://apyhub.com/dosvak/service/classify-iab-tier-3