Discontinued
This API no longer responds. Our last check on 2026-07-31 found no working endpoint — the service appears to have shut down or moved. The documentation, code samples and score below are kept for reference only; do not build against this API. See working Security APIs →
Overview
Application Environment Verification (AEV) is an Android library and API from FingerprintJS that checks whether a user device is safe to use. It detects rooted devices, emulators, and other risk signals that could indicate fraud or tampering. Developers use it to enforce security policies before granting access to sensitive app features.
Beginner Tip
Start by integrating the Android SDK into your app first — the API works alongside the library to verify results server-side. Always validate device signals on your backend rather than trusting the client alone.
Available Data
The kind of data this API exposes, based on its documentation. We could not call the endpoint to confirm the exact field names.
Example Response
Illustrative shape only — we were not able to call this endpoint (it requires credentials or exposes no public sample URL), so the fields below show the kind of data this API returns rather than a recorded response.
{
"title": "The Great Gatsby",
"authors": [
"F. Scott Fitzgerald"
],
"publishedDate": "1925-04-10",
"pageCount": 218,
"categories": [
"Fiction"
],
"imageLinks": {
"thumbnail": "https://books.google.com/..."
},
"averageRating": 4
} Field Reference
isRooted True if the device appears to be rooted or jailbroken. isEmulator True if the app is running inside an emulator rather than a real device. riskLevel Overall device risk assessment: low, medium, or high. requestId Unique ID for this verification request, useful for support and auditing. Implementation Example
Calls a real endpoint of this API. Replace any placeholder credentials with your own key.
const url = "https://api.fingerprintjs.com/aev/v1/verify";
// Replace headers or query params with the values required by this API.
const response = await fetch(url, {
headers: {
"X-API-Key": "YOUR_API_KEY"
}
});
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data); What Can You Build?
Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.
Common Errors & Troubleshooting
Generated guidance based on this API's documentation, not observed by us. Treat it as a starting point and check against the provider's own error reference.
Metadata Score Breakdown
Estimated from metadata — endpoint not independently tested
Metadata estimate · endpoint not independently tested
Technical Specifications
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