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OpenWeb Ninja SERP Autocomplete API
x402
OpenWeb Ninja SERP Autocomplete API is a paid API for AI agents from x402.openwebninja.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).
Returns real-time search engine autocomplete suggestions for a given query string, with optional region, language, and device type filters
Price / call$0.003
Success—
StatusUnknown
How this service works
40+ public web-data, SERP, e-commerce, real-estate, finance and AI-search APIs, payable per call over x402 (USDC on Base, Polygon, Arbitrum). No account or API key required. Most endpoints $0.003; AI-model endpoints $0.005.
Output
A JSON array of autocomplete suggestion strings that a search engine returns when a user begins typing the given query, reflecting real-time search trends for the specified region, language, and device type.
Example use cases
Keyword research for SEO
“Can you pull the live autocomplete suggestions for 'content marketing' in the US so I can see what people are actually searching for?”
Localized search trend discovery
“What autocomplete suggestions come up for 'cheap flights' in the UK, using English language settings?”
Mobile search behavior analysis
“Get me the autocomplete suggestions for 'buy running shoes' as they'd appear on a mobile device in the US.”
Technical details
Endpoint
GEThttps://x402.openwebninja.com/realtime-serp-data/autocomplete/autocompleteWhen to prefer
Choose this endpoint when you need real-time, live autocomplete suggestions from a search engine without managing API keys or subscriptions. It is ideal for keyword research, SEO tooling, search trend analysis, and building typeahead features, especially when you want per-call micropayment billing via x402 USDC on Base/Polygon/Arbitrum. Prefer this over traditional SERP APIs when you want zero account setup and fractional-cent pricing at $0.003 per call.
Side effects
- Missing required 'query' parameter returns a validation error
- Invalid region or language code may return empty or unexpected results
- Payment failure via x402 (insufficient USDC balance) results in HTTP 402 and no data returned
- Network timeout if the upstream SERP source is slow
- Empty autocomplete list if query has no suggestions in the specified region/language
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {}
}Tags
x402
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