POST/v1/seo/competitors/keywords

Keyword Gap Analysis API

Keyword gap analysis between two domains — find keywords your competitor ranks for that you don't. Close content gaps from $0.04/call.

Compare two domains side-by-side to find shared keywords (intersection) or keywords only one domain ranks for (gap). The classic competitor keyword gap analysis for SEO.

Full Docs Get API Key $0.04 / call

Try it live

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

POST /v1/seo/competitors/keywords$0.04/call

Live testing

API Key

Domain 1*

Your domain or the primary domain to analyze.

Domain 2*

Competitor domain to compare against.

Mode

Max Results

Number of keywords to return.

Location

Language

Response

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

{
  "ok": true,
  "data": {
    "domain1": "stripe.com",
    "domain2": "square.com",
    "intersections": true,
    "keywords": [
      {
        "keyword": "payment processing",
        "volume": 33100,
        "cpc": 15.2,
        "competition": 0.85,
        "difficulty": 72,
        "intent": "commercial",
        "domain1": {
          "position": 3,
          "url": "https://stripe.com/payments",
          "etv": 4500
        },
        "domain2": {
          "position": 7,
          "url": "https://square.com/payments",
          "etv": 1200
        }
      },
      {
        "keyword": "online payments",
        "volume": 22200,
        "cpc": 12.8,
        "competition": 0.78,
        "difficulty": 65,
        "intent": "commercial",
        "domain1": {
          "position": 5,
          "url": "https://stripe.com",
          "etv": 2100
        },
        "domain2": {
          "position": 2,
          "url": "https://square.com/online-payments",
          "etv": 5800
        }
      }
    ]
  }
}

Features

✓Shared keywords with both domains' positions

✓Gap mode: keywords only domain1 ranks for

✓Volume, CPC, difficulty, and intent per keyword

✓Estimated traffic for each domain per keyword

✓Configurable result limit up to 1000

Use cases

Keyword Gap Analysis

Find high-value keywords your competitor ranks for that you don't — the fastest path to new organic traffic.

Content Strategy Planning

Identify shared keywords where your competitor outranks you to prioritize content improvements.

SEO Benchmarking

Compare your keyword portfolio against a competitor to measure competitive positioning across shared terms.

Quick start

Copy this snippet and start making calls.

const res = await fetch('https://api.yepapi.com/v1/seo/competitors/keywords', {
  method: 'POST',
  headers: {
    'x-api-key': 'YOUR_API_KEY',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    "domain1": "stripe.com",
    "domain2": "square.com",
    "intersections": true,
    "limit": 100,
    "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	$0.04	No minimum. Pay as you go.
Ahrefs API	$0.15	$999/mo plan
Semrush API	$0.25	Enterprise plan

Frequently asked questions

Compare two domains side-by-side to find shared keywords (intersection) or keywords only one domain ranks for (gap). The classic competitor keyword gap analysis for SEO.

Each API call costs $0.04. 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/competitors/keywords. 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.

Get Started Read Docs

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