Keyword gap analysis API
Keyword gap analysis API - find the Google keywords a competitor ranks for that your domain does not, each with the competitor's ranking position and URL plus monthly search volume, CPC, competition, keyword difficulty and search intent. Surfaces content gaps and keyword opportunities for competitive SEO. Empty results if no gap.
Answeringour last check, 2026-10-04
1 of 1checks answered this week
472 msmedian answer time
$0.05listed price per call
$0.05price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://seo.openverbs.com/v1/keyword-gap
| Category | Search and research |
|---|---|
| Provider host | seo.openverbs.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 0 from 0 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-04 | valid payment request | 402 | $0.05 | 472 ms |
Example input (from the provider)
{
"body": {
"competitor": "example",
"domain": "example",
"limit": 1,
"locationCode": 1
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"competitor": {
"description": "Competitor domain to compare against, e.g. rival.com.",
"maxLength": 253,
"minLength": 3,
"type": "string"
},
"domain": {
"description": "Your domain, e.g. yoursite.com (scheme, www and path are stripped).",
"maxLength": 253,
"minLength": 3,
"type": "string"
},
"languageCode": {
"description": "Language code (2-letter). Defaults to en.",
"pattern": "^[A-Za-z]{2}$",
"type": "string"
},
"limit": {
"description": "Maximum gap keywords to return. Defaults to 50.",
"maximum": 200,
"minimum": 1,
"type": "integer"
},
"locationCode": {
"description": "DataForSEO location code. Defaults to 2840 (United States).",
"type": "integer"
}
},
"required": [
"domain",
"competitor"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}