---
title: Expand Related Keywords API
slug: expand-keyword-into-related-keywords
url: https://apyhub.com/dosvak/service/expand-keyword-into-related-keywords
provider: Dosvak LLC
categories: [Marketing, SEO]
tags: [keyword-research, seo, related-keywords, content-planning, ad-optimization]
auth: api_key
---

# Expand Related Keywords API

Expand one keyword into related suggestions with scores and pair counts. Useful for SEO research, content planning, and ad group expansion.

## Endpoints

| Method | Path | Description | Atoms |
| --- | --- | --- | --- |
| GET | `` | What it does Expands a single input keyword into a related-keywords result set. The endpoint takes… | 10 |

## About

## What it does
Keyword Expansion expands a single keyword into a list of related keywords. Send a `keyword` query parameter, and optionally set `limit` to control how many results you get back.

Use it when you need keyword ideas for SEO research, topic clustering, content planning, or ad group expansion. The response returns the original `query` and a `results` array of related keyword objects.

Each result includes the related `keyword`, a numeric `score`, and `pair_count`, so you can sort, filter, or rank suggestions in your own app. `limit` accepts values from 1 to 200, with a default of 25, which makes it easy to keep responses small during interactive workflows or request more candidates in batch jobs.

If you're building a content tool, search workflow, or campaign generator, Keyword Expansion gives you structured related-keyword data without having to scrape suggestion sources yourself.

## Usage

Authenticate with an ApyHub API key in the `apy-token` header.
Full docs and a live playground: https://apyhub.com/dosvak/service/expand-keyword-into-related-keywords