How does credit-based pricing work?

Each API call consumes one credit regardless of which endpoint is used, and plans include a fixed monthly credit allotment. Pricing scales linearly with no hidden fees.

Is there a free tier to test the API?

Yes. The Free Trial plan provides 1,000 credits at no cost and includes access to all API endpoints, a 2 req/s rate limit, and support for multiple API keys.

What does the email validation endpoint check?

It checks for disposable inboxes, role accounts, catch-all domains, relay and alias services, and DNS records including MX, SPF, and DMARC, returning a 0-100 risk score and a typo suggestion when the domain looks misspelled.

Does Veille detect VPNs and proxies?

Yes. The IP reputation endpoint flags VPNs, proxies, Tor exit nodes, datacenter hosts, and known abusive IPs, and returns geolocation and ASN data alongside a 0-100 threat score.

What are the paid plan limits?

The Starter plan at €49 per month includes 200,000 credits at 10 req/s. The Pro plan at €99 per month includes 500,000 credits at 25 req/s. The Advanced plan at €499 per month includes 3,500,000 credits at 100 req/s.

Veille: Email, IP, and domain fraud detection API

What is Veille?

Veille is a fraud detection API that validates emails, domains, IP addresses, VAT numbers, and IBANs in milliseconds, returning risk scores a developer can act on in the same request cycle. It is built for teams integrating abuse prevention into signup forms, checkout flows, or any endpoint that accepts user-supplied data. Every plan shares the same full API surface, with response times under 50ms and a 99.9% uptime SLA.

Why Veille works

Catching fake signups and bot traffic after the fact means cleaning up polluted databases, paying for fraudulent transactions, and manually reviewing accounts at scale. Veille sits at the point of entry: one GET request during signup or checkout returns a risk score, disposable-email flag, IP reputation status, and VAT validity before the record is written. Blocking or flagging happens in the same request cycle, so the bad actor never enters the system.

Veille features

Email Validation. Checks each address for disposable inboxes, role accounts, catch-all domains, relay aliases, and DNS health including MX, SPF, and DMARC, returning a 0-100 risk score and a typo suggestion so signup forms can reject bad addresses before they reach a database.
IP Reputation and Geolocation. Identifies VPNs, proxies, Tor exit nodes, datacenter hosts, and flagged abusive IPs, returning a 0-100 threat score with geolocation and ASN data so teams can block suspicious traffic at the session or form level.
Domain Intelligence. Checks a domain for disposable provider status, public webmail, relay services, DNS health, WHOIS data, domain age, and certificate transparency so teams can assess the domain independently of a specific email address.
VAT and IBAN Validation. Validates European VAT numbers against VIES and IBANs against bank registries so checkout flows and invoicing tools can verify business identity before processing a payment.
Currency Conversion. Returns ECB exchange rates for 30+ currencies with custom base currency and filter support so apps handling multi-currency pricing or invoicing have a reliable rate source without maintaining their own feed.

Who Veille is for

SaaS developers building signup flows who need to block disposable emails, bot registrations, and high-risk IPs without maintaining their own detection databases.
E-commerce and payments teams who need real-time VAT and IBAN validation at checkout to reduce fraudulent orders and chargebacks from invalid business identities.
Marketplace and platform operators where fake account creation leads to spam, multi-accounting, or referral abuse, and who need a risk score before a new record is written.
Freelancers and agencies building client-facing tools who want lightweight fraud protection without a dedicated security team or a complex multi-vendor integration.

Similar micro SaaS ideas you can build

Disposable Email Blocker for B2B SaaS. A middleware layer for B2B tools that rejects free and disposable email signups at the form level, letting founders filter out low-intent trial leads before they enter an onboarding sequence. Sold as a monthly subscription to indie SaaS developers who need basic protection without a full fraud platform.
EU VAT Validation Plugin for Invoice Tools. A micro SaaS that validates VAT numbers at invoice creation for freelancers and agencies billing European clients, flagging expired or unregistered VAT IDs before an invoice is sent. Revenue comes from a per-seat subscription attached to bookkeeping or invoicing tools.
Bulk Email List Hygiene Tool. A batch service that runs a marketing list through deliverability, disposable-inbox, and role-account checks before a campaign send, reducing bounce rates and protecting sender reputation. Priced per record validated, targeting email marketers and growth agencies.
IP Risk Scoring Middleware for Auth Flows. A drop-in risk layer for authentication flows that scores each login attempt by IP reputation, surfacing VPN and datacenter traffic for step-up verification. Sold to SaaS founders who want fraud signals in their auth stack without building a full security pipeline.