Is Application Environment Verification API down?
Current status, daily uptime history and troubleshooting for the Application Environment Verification API (Security).
No, Application Environment Verification is up
Application Environment Verification answered our last daily check (Oct 24, 2026, 12:25 UTC) in 1242 ms with HTTP 200.
Checking Application Environment Verification now…
Sending a request from our server.
Application Environment Verification API uptime history
- Uptime
- 2 checks so far
- Last check
- Oct 24, 2026, 12:25 UTC
- Response
- 1242 ms · HTTP 200
- Last up
- Now
We check Application Environment Verification's listed URL (https://github.com/fingerprintjs/aev) once a day. History started when Application Environment Verification was first checked, so new entries show fewer than 30 days.
Application Environment Verification API not working for you?
- Application Environment Verification needs an API key. A 401 or 403 usually means a missing, expired or mis-sent credential: check whether it belongs in a header or the query string.
- A 429 response means you're being rate-limited. Slow down, cache responses, and respect any Retry-After header.
- If it works from one network but not another, check firewalls, VPNs and regional blocks.
- Check the provider's documentation, status page or social accounts for planned maintenance or a changed endpoint.
Security APIs up at their last check
- 1
Presend API
Online · 399 msSecurity and developer utility API -- malware, vulnerability, and domain checks, no signup.
- No API key needed
- Fast: 399 ms response
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS - 2
IPGuardian API
Online · 940 msCheck IP addresses against 140+ public threat intelligence blocklists.
- No API key needed
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS - 3
IPLogs API
Online · 762 msFree VPN, proxy, Tor and datacenter IP detection. 13 sources, active probing.
- No API key needed
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS - 4
OSV API
Online · 608 msOpen source vulnerability database and distributed triage infrastructure.
- No API key needed
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS - 5
Passwordinator API
Online · 730 msGenerate random passwords of varying complexities.
- No API key needed
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
Compare all Application Environment Verification alternatives · APIs down right now
Application Environment Verification API status FAQ
Is Application Environment Verification API down right now?
Application Environment Verification answered our last daily check (Oct 24, 2026, 12:25 UTC) in 1242 ms with HTTP 200. This page also runs a live check from our server when you open it, so you can see whether Application Environment Verification is responding at this moment.
How do you check whether Application Environment Verification API is up?
Once a day our checker requests Application Environment Verification's listed URL (https://github.com/fingerprintjs/aev) and records whether it answers within 15 seconds. Answers like 401 (needs a key), 403 (blocks bots) or 429 (rate-limited) count as up, because the server responded. The listed URL is often the documentation page, so an API endpoint can occasionally fail while its docs stay up.
What can I use if Application Environment Verification API is down?
Free Security APIs that were up at their last check include Presend, IPGuardian, IPLogs. See the full list of Application Environment Verification alternatives for a comparison.
Why does Application Environment Verification API work for others but not for me?
Application Environment Verification needs an API key. A 401 or 403 usually means a missing, expired or mis-sent credential: check whether it belongs in a header or the query string. A 429 response means you're being rate-limited. Slow down, cache responses, and respect any Retry-After header. If it works from one network but not another, check firewalls, VPNs and regional blocks.