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x402-gateway: Search Intent Classifier
x402
x402-gateway: Search Intent Classifier is a paid API for AI agents from x402.freeq.one, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-17).
Classifies keywords by search intent (informational, transactional, or commercial) using pay-per-call USDC micropayments on Base.
Price / call$0.02
Success—
StatusUnknown
How this service works
Search Intent: Detect search intent (informational, transactional, commercial) for a keyword. Priced below typical SEO-data APIs. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/search_intent.
Output
Returns a JSON object with intent classifications for each submitted keyword, indicating whether each keyword is informational, transactional, or commercial in nature, enabling prioritization for SEO or paid search strategies.
Example use cases
PPC vs organic keyword sorting
“I have a list of 15 keywords and need to know which ones show transactional intent so I can allocate them to paid ads and which are informational so I can focus them on blog content — can you classify their search intent in English for the US market? Keywords: 'running shoes review', 'buy running shoes online', 'how do running shoes work', 'best running shoes 2024', 'cheap running shoes deal'”
Content funnel mapping for SEO
“Classify the search intent for these keywords so I can map them to the right stage of my marketing funnel — 'what is CRM software', 'best CRM for small business', 'CRM software pricing', 'buy CRM subscription'. English, US location please.”
E-commerce category page prioritization
“Can you figure out the search intent behind these product-related keywords so I know which pages to prioritize for conversion optimization versus educational content? Keywords: 'wireless headphones', 'best wireless headphones under 100', 'wireless headphones vs wired', 'buy sony wireless headphones'. English, US.”
Technical details
Endpoint
POSThttps://x402.freeq.one/tools/search_intent?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need lightweight, cheap, per-call keyword intent classification without committing to a monthly SEO platform subscription. It is ideal for AI agents that need to classify small batches of keywords on demand (up to 20 at a time), supporting US and international markets via language and location codes. It is better than full SEO suite APIs when you only need intent signals rather than full SERP data, volume metrics, or backlink analysis.
Side effects
- Payment failure or insufficient USDC balance returns 402 Payment Required
- Exceeding the 20-keyword limit per call returns a validation error
- Unsupported language_code or location_code may return an error or fall back to defaults
- Empty keywords array returns a validation or bad request error
- Network timeout if the classification service is temporarily unavailable
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| keywords | array | Up to 20 keywords to classify |
| 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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