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does-site-use-firebase-auth
x402
does-site-use-firebase-auth is a paid API for AI agents from site.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-16).
Detects whether a website uses Firebase Auth by fingerprinting its homepage HTML and response headers, returning yes/no with evidence snippets.
Price / call$0.01
Success—
StatusUnknown
How this service works
Does a website use Firebase Auth? Fetches the page (homepage for a bare domain) and matches Firebase Auth's fingerprints in the HTML and response headers, returning yes/no with the evidence snippet and the category (auth). Technographics for sales, competitor research and migration planning, one technology per call. $0.01 per check.
Output
Returns a yes/no boolean indicating whether Firebase Auth was detected on the site, along with the matching evidence snippet (HTML or header fragment that triggered the match) and the technology category label ('auth').
Example use cases
Competitor auth stack research
“Check whether notion.so uses Firebase Auth — I'm researching what authentication providers our main competitors are using.”
Sales lead qualification
“I have a list of SaaS prospects and I want to know which ones use Firebase Auth — can you start by checking linear.app?”
Migration planning audit
“We're planning to migrate away from Firebase Auth and need to confirm that our staging site at staging.myapp.com still shows Firebase Auth fingerprints before we cut over.”
Technical details
Endpoint
GEThttps://site.intel.rallylive.ca/site/uses/firebase-auth?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a fast, low-cost ($0.01) single-domain check for Firebase Auth specifically. Ideal for technographic enrichment pipelines, sales prospecting qualification, or competitive research where you want a definitive yes/no with evidence rather than a full tech-stack scan. Use the bulk sibling endpoints if checking more than one domain at a time.
Side effects
- Site is unreachable or returns non-200 response — detection cannot be performed
- Site uses client-side rendering and fingerprints only appear after JS execution — may return false negative
- Domain is paywalled or bot-protected, blocking the fetch
- Firebase Auth fingerprints are obfuscated or minified in a way that evades pattern matching
- Invalid or malformed domain input returns an error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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