POST/v1/seo/keywords/related

Related Keywords API

Discover semantically related keywords and variations with volume, CPC, and difficulty. Build topical authority from $0.03/call.

Discover keywords that are semantically related to your seed term. These aren't just variations — they're terms that searchers also look for, helping you build comprehensive topic coverage.

Full Docs Get API Key $0.03 / call

Try it live

Fill in the fields and hit Run to see a real response.

POST /v1/seo/keywords/related$0.03/call

Live testing

API Key

Seed Keyword*

Max Results

Number of related keywords to return (default 50).

Location

Language

Response

Example response — hit "Run" to see a live result

{
  "ok": true,
  "data": [
    {
      "keyword": "email automation",
      "searchVolume": 8100,
      "cpc": 3.2,
      "difficulty": 52
    },
    {
      "keyword": "drip campaign",
      "searchVolume": 4400,
      "cpc": 2.8,
      "difficulty": 45
    },
    {
      "keyword": "newsletter platform",
      "searchVolume": 3600,
      "cpc": 4.1,
      "difficulty": 48
    }
  ]
}

Features

✓Semantically related keywords, not just variations

✓Search volume, CPC, and difficulty for each result

✓Configurable result limit

✓Location and language targeting

✓Great for building topic clusters

Use cases

Topic Cluster Building

Map the full semantic landscape around any topic to create interlinked content that search engines reward.

Internal Linking Strategy

Discover related terms across your content to build contextual internal links that boost page authority.

Content Gap Analysis

Find related topics your site hasn't covered yet — opportunities competitors are already ranking for.

Semantic SEO

Enrich your pages with semantically related terms that signal topical authority to search engines.

FAQ Generation

Identify the questions and related searches real users have, then build FAQ sections that capture featured snippets.

Quick start

Copy this snippet and start making calls.

const res = await fetch('https://api.yepapi.com/v1/seo/keywords/related', {
  method: 'POST',
  headers: {
    'x-api-key': 'YOUR_API_KEY',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    "keyword": "email marketing",
    "limit": 50,
    "location_code": 2840,
    "language": "en"
  }),
});
const data = await res.json();
console.log(data);

Why YepAPI is cheaper

No monthly minimums. No enterprise plans. Just pay per call.

Provider	Cost / call	Catch
YepAPI	$0.03	No minimum. Pay as you go.
DataForSEO	$0.05	$500/mo minimum
Semrush API	$0.20	Enterprise plan

Frequently asked questions

Discover keywords that are semantically related to your seed term. These aren't just variations — they're terms that searchers also look for, helping you build comprehensive topic coverage.

Each API call costs $0.03. No monthly minimums or subscriptions — you only pay for what you use.

Sign up for a free API key, then send a POST request to /v1/seo/keywords/related. Check the code example above for a ready-to-use snippet in JavaScript, cURL, or Python.

YepAPI bundles SEO, AI, and web scraping APIs under one key with no monthly minimums. You get lower per-call pricing, a unified dashboard, and one billing account instead of managing multiple providers.

Ready to integrate?

Get your API key and start making calls in 30 seconds. No credit card required.

Start Free Read Docs

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POST /v1/seo/keywords/ideas

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POST /v1/seo/domain/overview

Command Palette