Documentation
One API key for VAT, IBAN, national IDs, email and phone. Integrate in minutes.
Guides, API reference, code examples and SDKs — all in one place.
Quick start
- Get an API key and authenticate with the
X-API-KEYheader. - Send JSON payloads over HTTPS; responses include normalized data.
- Use the client dashboard to track validation statistics (usage, errors, latency).
API Reference
Browse the complete API documentation with all endpoints, parameters and response examples.
View API documentation →Official SDKs
Java and Spring Boot from Maven Central, Node.js and TypeScript from npm — or call the REST API directly from any language.
View API documentation →Code examples
Get started quickly with ready-to-use examples in your language of choice.
Advanced email validation
Boost conversions and protect your sender reputation with actionable deliverability signals.
Validation depth depends on the user's plan
The checks that actually run progress from STANDARD to PREMIUM depending on the subscribed plan. Compare included signals to pick the right commercial and technical coverage.
Usage tracking in the client dashboard
Monitor validations over time, filter by endpoint, and quickly spot integration issues after deployments.
How it works
- Use your API key in your backend (never expose it in the browser).
- Send validation requests to VerifNow — VAT, IBAN, national IDs, email or phone.
- Review usage, errors, and latency in your dashboard to keep control of quotas and reliability.
Examples
Performance & Reliability
< 50 ms
Typical latency
Median (p50) response time measured on our production endpoints.
7
Validators, one API key
VAT, IBAN, national IDs (NIF, NAS, SSN), email and phone — one key, one quota, one bill.
250 / month
Free tier
Full STANDARD checks, no credit card, no time limit.
Latency is indicative and varies with endpoint, region, and input quality. We do not publish a contractual uptime guarantee at this stage — contact us if you need an SLA.