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x402-gateway: Domain Keywords
x402
x402-gateway: Domain Keywords 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).
Returns all keywords a domain ranks for in organic search, including position and search volume, via pay-per-call USDC micropayment.
Price / call$0.05
Success—
StatusUnknown
How this service works
Domain Keywords: Get all keywords a domain ranks for with position and volume. Priced below typical SEO-data APIs. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/domain_keywords.
Output
Returns a JSON object containing a list of keywords the specified domain ranks for, each entry including the keyword text, its current organic search position, and search volume data. Results are filtered by language and geographic location as specified.
Example use cases
Competitor SEO keyword audit
“Give me the top 200 keywords that semrush.com ranks for in English in the United States — I want to see what positions they hold and the search volumes.”
Localized keyword discovery for a market
“What keywords does zalando.de rank for in Germany? Use language code 'de' and the German Google location so I get local results — show me up to 100 keywords.”
Content gap analysis for a niche site
“Pull the organic keyword rankings for backlinko.com in English in the US, up to 150 keywords, so I can find topics they rank for that I haven't written about yet.”
Technical details
Endpoint
POSThttps://x402.freeq.one/tools/domain_keywords?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need per-domain organic keyword ranking data on a pay-per-call basis with no subscription or API key setup — ideal for agents that need occasional or one-off SEO lookups for arbitrary domains at low cost ($0.05/call). Prefer over subscription SEO APIs (Ahrefs, SEMrush, Moz) when you don't need a full platform, and when USDC micropayment via x402 is already integrated in your agent stack.
Side effects
- Invalid or unrecognized domain format returns an error
- Location code or language code not supported returns an error or empty result
- Domain with no ranking keywords returns an empty result set
- Limit value outside 1-200 range may cause a validation error
- Payment failure (insufficient USDC balance or x402 handshake error) blocks the request
- Rate limiting or upstream SEO data unavailability may cause a timeout or empty response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| limit | integer | Max keywords, 1-200 (default 50) |
| domain | string | Domain, e.g. example.com (no path) |
| 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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