Connect your CRM, mobile app, or backend directly to 6X — the same infrastructure that powers our own platform. Included free with an approved wholesale account, no separate subscription.
# Verify a phone number curl -X POST \ https://app.6xcom.com/api/v1/verify/send \ -H "X-API-Key: YOUR_KEY" \ -d phone="+2348012345678" \ -d channel="sms" # { "success": true, "request_id": "..." }
Verify a customer's number by SMS code or a real spoken call — the same flow behind sign-up and login flows.
Check a number's country and network before you contact it — catch typos and invalid numbers before you spend on them.
Check a destination against 6X's toll-fraud watchlist before you dial or message it.
Send immediately or schedule for later, straight from your own software — the same engine behind Bulk SMS.
Real-time SMS delivery, inbound messages, verification completion, and staff/leave events pushed to your server — HMAC-signed, no polling.
https://app.6xcom.com/api/v1 — every response is JSON, standard HTTP status codes.
Create a free wholesale account.
Quick verification, typically same-day.
Your API key is right in your Wholesale Portal profile.
Pass it via X-API-Key or a Bearer token — no separate signup.
No — the API itself is free with an approved wholesale account, no separate subscription. You only pay for actual usage (verifications sent, SMS sent) at the same rates as everything else on your account.
A single API key tied to your wholesale account, passed with every request — the same key works across Verify, Number Lookup, Fraud Check, SMS, and webhook configuration.
Number Lookup and Fraud Check are free to call directly for testing since they carry no per-call cost. For SMS/Verify, use a small real top-up — there's no separate simulated sandbox environment.
There is no daily call cap — the API is designed to scale with real usage. Excessive automated abuse is handled the same way any account's traffic is monitored, via Fraud Watch.
SMS delivery, inbound messages, and verification events are pushed to your configured endpoint in real time, HMAC-signed so you can verify authenticity.
Number Lookup and Fraud Check are free per call. Phone Verification and SMS sending are billed per use at your account's normal rates — there is no platform or subscription fee for any of it.
No platform fee, no daily call cap — register free and your API key is ready as soon as you're approved.