Product review
Fingerprint proxy detection API review
Fingerprint starts from the observed device and browser event. Its Smart Signals include VPN and proxy detection, alongside identification and a Suspect Score. SDKs, Server API access and webhooks suit teams that need to correlate network masking with a returning device and retain event context in their backend.
Editorial score
- Evidence layer
- Device identity and Smart Signals
- Free access
- Free identification up to 1,000 API calls per month, with a 14-day Pro Plus trial; Smart Signals access depends on the plan
- Paid entry
- Pro Plus: 99 US dollars per month for 20,000 API calls; 4 US dollars per additional 1,000
Key facts
- Result
- Visitor identification, Smart Signals and Suspect Score, with VPN/proxy detections described in the signal documentation. Vendor page ↗
- Delivery
- Client and server SDKs plus API and webhook delivery support event-based integration. Vendor page ↗
- Free versus trial
- Free identification up to 1,000 API calls per month, with a 14-day Pro Plus trial; Smart Signals access depends on the plan. Vendor page ↗
- Paid access
- Pro Plus: 99 US dollars per month for 20,000 API calls; 4 US dollars per additional 1,000. Check specific Smart Signals and usage limits. Vendor page ↗
Strengths
- Visitor identity and residential-proxy signals can be assessed together.
- A documented confidence field adds nuance to the residential signal.
- Web and mobile SDK options support broader device-aware application integration.
Limitations
- Identification-only free access should not be treated as permanent access to every Smart Signal.
- Preserve each signal’s documented field, event reference and score meaning when building an internal result model.
Who it fits
Engineering teams building device-aware application controls that need identity continuity and explicit proxy-related signals.
Use the alternatives by integration model to compare IP lookup APIs, browser-assisted collection, attribution feeds and local databases.
What the score means
The 8.4 out of 10 score is an editorial assessment under the same 42-criterion, seven-category framework. The rubric covers detection, integration, latency, response shape, freshness, false-positive discipline and commercial access. The published scale runs from 0 to 10.
The award and score are distinct. Read all criteria and relative weights and verify the required signal and integration for your traffic.
How to evaluate it
Join controlled event IDs to known test accounts through the documented backend flow. Compare ordinary homes, authorized proxy sessions and rotating exits, inspecting both visitor continuity and residential-signal confidence.
Live device demo and trial
Inspect your own permitted device result in the demo. Use an entitled trial or plan to test the exact residential-proxy signal.
Open evaluation routeSources and further reading
- Product and detection approach · checked October 23, 2026
- Pricing and access · checked October 23, 2026
- Integration and result documentation · checked October 23, 2026
- Vendor guide and product context · checked October 23, 2026
FAQ
Does free identification include all Smart Signals?
Free identification up to 1,000 API calls per month, with a 14-day Pro Plus trial; Smart Signals access depends on the plan.
Why collect an event ID?
Use a trusted backend result tied to the action instead of accepting risk fields supplied by the browser.
How is paid access priced?
Pro Plus: 99 US dollars per month for 20,000 API calls; 4 US dollars per additional 1,000.