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x402-gateway: Keyword Ideas (SEO)
x402
x402-gateway: Keyword Ideas (SEO) is a paid API for AI agents from x402.freeq.one, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-17).
Generates keyword ideas and search volume data from a seed keyword, priced per-call in USDC on Base via x402.
Price / call$0.05
Success—
StatusUnknown
How this service works
Keyword Ideas: Generate keyword ideas from a seed keyword with volume data. Priced below typical SEO-data APIs. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/keyword_ideas.
Output
Returns a JSON object containing a list of keyword ideas derived from the seed keyword, each with associated search volume data and related metrics, up to the specified limit.
Example use cases
Content brief keyword research
“I'm writing a blog post about 'intermittent fasting' — can you pull 30 keyword ideas in English for the US market so I know which related terms to target?”
E-commerce product page SEO
“I'm optimizing product pages for 'standing desk' — get me 50 keyword ideas with search volumes for the US so I can find the best terms to include.”
Competitor content gap analysis
“I want to find keyword opportunities around 'project management software' for an English-speaking US audience — give me 25 ideas with volume data so I can spot gaps in my content strategy.”
Technical details
Endpoint
POSThttps://x402.freeq.one/tools/keyword_ideas?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need affordable, pay-per-call keyword idea generation with search volume data and no account or API key setup — particularly suitable for AI agents that need on-demand SEO research billed in USDC on Base. Prefer over subscription-based SEO APIs (Ahrefs, SEMrush) for low-frequency or agent-driven usage where per-call pricing is more cost-effective.
Side effects
- Invalid or missing seed keyword returns an error
- Limit out of range (below 1 or above 100) may cause a validation error
- Unsupported language_code or location_code may return empty or error results
- Payment failure via x402 results in a 402 response and no data
- Network timeout on upstream SEO data source returns a 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| limit | integer | Max ideas to return, 1-100 (default 25) |
| keyword | string | Seed keyword |
| 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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