Selection and deployment
Complete guide to choosing and deploying a proxy detection API
Start with the protected action, then choose evidence, integration and a verification plan. This guide connects the original buying questions to detailed implementation articles.
How does a proxy detection API work?
An IP lookup checks known network activity, anonymizer records and address context. Browser-assisted products add observations about the current visit and device. Read connection classification, risk and account context separately rather than treating every hosted or shared IP as an abusive proxy.
Read the implementation detail →How do you detect proxies with an API?
Check the signup, login or checkout action. Obtain the trusted address or supported browser event, retrieve the documented result, preserve unknown states and compare it with account context. Then repeat permitted tests after the exit rotates.
Read the implementation detail →Proxy detection, geolocation or device fingerprinting?
Geolocation estimates an address’s location; proxy intelligence assesses relaying and masking; device identification correlates observed devices. They can appear in one product, but the required fields and collection model decide whether an integration covers your use case.
Read the implementation detail →How do you integrate a proxy detection API?
Choose a server IP lookup, a local data product or supported browser collection plus backend retrieval/webhook delivery. Keep private keys out of the client, bind the result to the action and specify what the application does when a result is late or unavailable.
Read the implementation detail →What should happen when a request is flagged?
A proxy flag describes a connection. Combine the result with the action, customer history and other evidence before applying verification, review or restriction. Corporate VPNs, carrier NAT and privacy relays need legitimate controls; an appeal or recovery path helps identify damaging false restrictions.
Read the implementation detail →How much does an API cost at your volume?
Count lookups, identifications and retries at protected actions. Check the actual included fields and billing period, then model bursts and required modules. A daily quota, signup credit balance and annual invoice have different operating consequences.
Read the implementation detail →What changes should an integration prepare for?
Rotating exits, IPv6, legitimate privacy services and different browser collection behavior change the evidence available. Prefer versioned response handling, recency tracking, documented missing states and repeated testing over a prediction that one proxy flag will remain sufficient through 2030.
Read the implementation detail →Which API fits which scenario?
Use live device/network/account context for account-abuse protection, structured IP APIs for network enrichment, attribution products for proxy-provider context, and local datasets for in-process lookup. The alternatives page maps all ten ranked products to these delivery choices.
Read the implementation detail →What should you verify before buying?
Check field entitlement, coverage by proxy type, IPv4/IPv6, client collection, error behavior, real invoice units, licensing, required regions and the integration deadline. Evaluate allowed labeled sessions and legitimate customers before enforcing a new policy.
Read the implementation detail →How do you compare false positives and freshness?
Send comparable labeled inputs to every candidate, preserve complete results and count unavailable checks separately. Repeat on known exits and changed networks, record timestamps and inspect false positives among legitimate customers. Do not turn one public lookup or a cached result into an accuracy claim.
Read the implementation detail →Before the first live decision
- Define the action, permitted input and trusted proxy boundary.
- Check one home connection, a corporate or privacy route and an authorized proxy exit.
- Record version, timestamp, fields, latency and missing-result behavior.
- Verify access, credit units and protected-event volume.
- Review legitimate-user outcomes before changing enforcement.
Open the checker directory · Read the full evaluation criteria