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.
Try it live
Fill in the fields and hit Run to see a real response.
{
"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
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);What developers say
“Switched from SerpAPI and cut our SERP costs by 80%. Same data quality, way simpler billing.”
“One API key for AI models, SERP data, and web scraping. Saved us from managing 4 separate providers.”
“The $5 free credit let us prototype our entire rank tracking feature before committing. No other API does that.”
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 $0.02 (+$0.02 per 100 results). 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. $5 free credit on signup — no credit card required.
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