Is ThreatCluster API down?
Current status, daily uptime history and troubleshooting for the ThreatCluster API (Security).
No, ThreatCluster is up
ThreatCluster answered our last daily check (Oct 24, 2026, 12:25 UTC) in 651 ms with HTTP 200.
Checking ThreatCluster now…
Sending a request from our server.
ThreatCluster API uptime history
- Uptime
- 2 checks so far
- Last check
- Oct 24, 2026, 12:25 UTC
- Response
- 651 ms · HTTP 200
- Last up
- Now
We check ThreatCluster's listed URL (https://threatcluster.io/api/public/v1/docs) once a day. History started when ThreatCluster was first checked, so new entries show fewer than 30 days.
ThreatCluster API not working for you?
- ThreatCluster 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.
- ThreatCluster doesn't send CORS headers, so browsers block calls made directly from a web page. Call it from your server instead.
- 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 ThreatCluster alternatives · APIs down right now
ThreatCluster API status FAQ
Is ThreatCluster API down right now?
ThreatCluster answered our last daily check (Oct 24, 2026, 12:25 UTC) in 651 ms with HTTP 200. This page also runs a live check from our server when you open it, so you can see whether ThreatCluster is responding at this moment.
How do you check whether ThreatCluster API is up?
Once a day our checker requests ThreatCluster's listed URL (https://threatcluster.io/api/public/v1/docs) 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 ThreatCluster API is down?
Free Security APIs that were up at their last check include Presend, IPGuardian, IPLogs. See the full list of ThreatCluster alternatives for a comparison.
Why does ThreatCluster API work for others but not for me?
ThreatCluster 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. ThreatCluster doesn't send CORS headers, so browsers block calls made directly from a web page. Call it from your server instead.