Keyword variations API
Keyword variations API: expand a seed phrase into keywords containing that phrase, such as 'running shoes' into 'running shoes for women'. Each includes Google monthly search volume, CPC, competition, keyword difficulty and search intent. No matches returns empty results.
Answeringour last check, 2026-10-18
1 of 1checks answered this week
452 msmedian answer time
$0.04listed price per call
$0.04price 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-variations
| Category | Search and research |
|---|---|
| Provider host | seo.openverbs.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-18 | valid payment request | 402 | $0.04 | 452 ms |
Example input (from the provider)
{
"body": {
"keyword": "running shoes"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"keyword": {
"description": "Seed phrase; suggestions contain this phrase.",
"maxLength": 80,
"minLength": 1,
"type": "string"
},
"languageCode": {
"description": "Language code (2-letter). Defaults to en.",
"pattern": "^[A-Za-z]{2}$",
"type": "string"
},
"limit": {
"description": "Maximum suggestions to return. Defaults to 20.",
"maximum": 100,
"minimum": 1,
"type": "integer"
},
"locationCode": {
"description": "DataForSEO location code. Defaults to 2840 (United States).",
"type": "integer"
}
},
"required": [
"keyword"
],
"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"
}