Development — entry 017 of 100
Cloudflare Trace
This isn't a hosted service but a documented trick: hitting Cloudflare's own /cdn-cgi/trace debug path on any Cloudflare-fronted hostname (one.one.one.one, icanhazip.com, workers.dev, and others) returns the caller's IP, timestamp, HTTP and TLS/SSL version, edge colocation code, and country as a few lines of plain text. It needs no signup or key since it rides on Cloudflare's own infrastructure, and a live check against one.one.one.one returned an open Access-Control-Allow-Origin header for direct browser use.
AuthenticationNone requiredCall it straight away — no key, no signup.
HTTPSSupportedTraffic is encrypted in transit.
CORSEnabledCallable directly from browser JavaScript.
PricingFreeNo paid tier — free for the documented use case.
FormatsTextResponses can be requested as Text.
GreatAPIs Score
Score74
Authentication25/25No authentication required
Pricing20/20Free to use
Docs0/20No docs or spec available
Formats9/15Single response format
Freshness20/20Verified within 6 months
Embed this badge
<a href="https://greatapis.com/api/cloudflare-trace/"><img src="https://greatapis.com/badge/cloudflare-trace.svg" alt="Scored 74 on greatapis.com"></a>Auth quickstart
- No key needed — call it now.
Stored keyNo key stored
Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.