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Cortex Cloud Web Search API
x402
Cortex Cloud Web Search API is a paid API for AI agents from api.cortexcloud.org, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-15).
Searches the web using neural (semantic) or keyword modes, returning ranked results filtered by domain and date range
Price / call$0.03
Success—
StatusUnknown
How this service works
OpenAI-compatible AI and data API for agents. Pay per call in USDC on Base via x402 — no API keys, no subscriptions, no lock-in.
Output
A JSON object containing a 'results' array of web search result objects, each typically including a URL, title, snippet/summary, and publication date, ranked by relevance according to the chosen search type.
Example use cases
Competitive research for product team
“Search the web for recent articles about OpenAI competitors published in the last 3 months, use neural search, and give me the top 8 results — exclude wikipedia.org and reddit.com.”
Domain-restricted fact lookup for agent
“Do a keyword search for 'USDC stablecoin interest rates' limited to coinbase.com and bloomberg.com, top 5 results, going back to January 2024.”
Trending topic monitoring for newsletter
“Run a neural search for 'autonomous AI agents' to find the 10 most relevant recent articles published this year, with autoprompt enabled to improve the query.”
Technical details
Endpoint
GEThttps://api.cortexcloud.org/x402/v1/searchWhen to prefer
Choose this endpoint when your agent needs real-time or recent web search with fine-grained control over search modality (neural vs keyword), domain allowlists/blocklists, and date-range filtering — especially in a pay-per-call, no-subscription workflow using x402/USDC on Base. Prefer this over general search APIs when you need OpenAI-compatible integration patterns and crypto-native payment rails with no API key management.
Side effects
- Empty results array if query matches nothing or domains are too restrictive
- Payment failure if USDC balance is insufficient on Base
- Invalid enum value for 'type' field returns a 400 error
- Date strings in wrong format may cause no filtering or errors
- Overly broad domain exclusion lists may yield zero results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| type | string | |
| query | string | Search query |
| numResults | integer | |
| useAutoprompt | boolean | |
| excludeDomains | array | |
| includeDomains | array | |
| endPublishedDate | string | |
| startPublishedDate | string |
Output
Schema · Response
{
"type": "object",
"format": "application/json",
"example": {
"results": []
}
}Tags
x402
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