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x402-gateway: Keyword Volume
x402
x402-gateway: Keyword Volume is a paid API for AI agents from x402.freeq.one, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-17).
Returns Google search volume, CPC, and competition data for up to 100 keywords per call, paid per-use in USDC on Base via x402.
Price / call$0.03
Success—
StatusUnknown
How this service works
Keyword Volume: Google search volume, CPC, and competition for up to 100 keywords. Priced below typical SEO-data APIs. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/keyword_volume.
Output
A JSON object containing per-keyword metrics including monthly Google search volume, cost-per-click (CPC), and competition score for each keyword in the input list, scoped to the specified language and geographic location.
Example use cases
Content strategy keyword prioritization
“I'm planning a blog for a fitness brand. Can you check the monthly search volume, CPC, and competition level for these 10 keywords: 'home workout', 'meal prep ideas', 'protein shake recipes', 'HIIT for beginners', 'yoga for weight loss', 'resistance bands', 'intermittent fasting', 'best running shoes', 'gym bag essentials', 'creatine benefits'? Use English and target the US.”
PPC budget planning for e-commerce
“I need to estimate ad spend for a campaign. Look up the CPC and competition scores for 'noise cancelling headphones', 'wireless earbuds', 'bluetooth speaker', and 'gaming headset' — in English, US market.”
Competitor keyword gap analysis
“Can you get me the search volume and competition data for these keywords my competitor is ranking for: 'organic dog food', 'grain free dog kibble', 'raw dog food delivery', 'vet recommended dog food', and 'best puppy food brands'? English, United States location.”
Technical details
Endpoint
POSThttps://x402.freeq.one/tools/keyword_volume?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need keyword volume, CPC, and competition data without committing to a monthly SEO platform subscription. It is ideal for pay-per-use agent workflows, one-off research tasks, or automated pipelines where you want to enrich keyword lists on demand. Compared to full-service SEO APIs like DataForSEO or SEMrush, this is significantly cheaper per call at $0.03 USDC and requires no account setup — just a USDC wallet on Base.
Side effects
- Exceeding 100 keywords per request returns a validation error
- Invalid language_code or location_code may return empty or incorrect results
- Keywords with very low search volume may return zero or null metrics
- Payment failure via x402 will block the request before processing
- Malformed input array (non-string items) causes a schema validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| keywords | array | Up to 100 keywords. |
| language_code | string | Language code (default 'en') |
| location_code | integer | Google location code (default 2840 = United States) |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {}
}
}Tags
x402
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