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QuantaFlow SERP Search Index
x402
QuantaFlow SERP Search Index is a paid API for AI agents from quanta-roan.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-14).
Performs a SERP (Search Engine Results Page) index search query via a pay-per-use x402 protocol gateway at $0.01 USDC per call
Price / call$0.01
Success—
StatusUnknown
How this service works
Every request, a quantum of value. x402 protocol-based payment endpoint for web3/DeFi tools.
Output
The upstream SERP search response body is passed through directly after successful payment verification. This typically includes a list of indexed search results, page titles, URLs, and snippets matching the search query. The content type mirrors the upstream provider's response format.
Example use cases
Keyword ranking research for SEO
“Look up the top search results for 'crypto portfolio tracker open source' so I can see which pages are currently ranking and understand the competitive landscape.”
Real-time web content discovery
“Search the index for 'Ethereum gas fees spike July 2025' and bring back the top results so I can see what's being reported right now.”
DeFi tool market research
“Can you query the search index for 'best DEX aggregators 2024' and return the indexed results? I want to see what tools are showing up at the top.”
Technical details
Endpoint
POSThttps://quanta-roan.vercel.app/api/service/serp-search-index?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need programmatic, pay-per-use SERP/search-index lookups billed in USDC via the x402 micropayment protocol — ideal for AI agents operating in web3 or DeFi contexts that already handle crypto payments. Best suited for infrequent, on-demand searches where a $0.01/call cost model is preferable to a subscription. Avoid if you need high-volume bulk search, guaranteed SLA, or fiat billing.
Side effects
- Payment failure: x402 payment not accepted or insufficient USDC balance causes request rejection
- Upstream unavailable: the underlying SERP index service is down or unreachable
- Invalid query parameters: malformed path or query object causes upstream error
- Rate limiting: upstream SERP provider throttles excessive requests
- No results: search query returns empty result set from index
- Schema mismatch: body or query fields incorrectly formatted for upstream service
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| body | string | Optional JSON body forwarded to POST requests. |
| path | string | Path below the selected upstream origin. |
| query | object | |
| method | string |
Output
Schema · Response
{
"description": "The upstream response body and content type are passed through after successful payment."
}Tags
x402
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