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Does Site Use React
x402
Does Site Use React is a paid API for AI agents from site.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-18).
Detects whether a website uses the React JavaScript framework by fetching its homepage and matching React fingerprints in the HTML and response headers.
Price / call$0.01
Success—
StatusUnknown
How this service works
Does a website use React? Fetches the page (homepage for a bare domain) and matches React's fingerprints in the HTML and response headers, returning yes/no with the evidence snippet and the category (framework). Technographics for sales, competitor research and migration planning, one technology per call. $0.01 per check.
Output
Returns a yes/no answer indicating whether the website uses React, along with an evidence snippet (the matching HTML or header content that triggered the detection) and the technology category label (framework). This gives both a conclusive boolean signal and the raw evidence for validation.
Example use cases
Sales lead qualification by tech stack
“Before I reach out to acmecorp.com as a prospect, can you check if their website uses React? We sell React tooling and only want to target React shops.”
Competitor technology research
“I'm researching our top five competitors — start with stripe.com. Does their site use React? I want to map out what frameworks the market leaders are running.”
Migration planning pre-assessment
“We're considering migrating away from our legacy frontend, and I need to know if our current site at legacy-brand.com already has React in the mix before we plan the project.”
Technical details
Endpoint
GEThttps://site.intel.rallylive.ca/site/uses/react?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a fast, cheap ($0.01), single-technology check specifically for React on one domain at a time. It is ideal for sales enrichment pipelines, competitive intelligence workflows, or pre-migration audits where React detection is the specific signal needed. For bulk checks across many domains simultaneously, prefer the bulk sibling endpoint. For detecting other frameworks or technologies, use the corresponding sibling endpoints on the same platform.
Side effects
- Domain is unreachable or returns a non-200 status — detection cannot proceed
- Site uses server-side rendering that obscures React fingerprints — may return false negative
- Site loads React dynamically via JavaScript after initial HTML load — static fetch may miss it
- Rate limiting or bot detection on the target site blocks the fetch
- Invalid or malformed domain input causes request failure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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