Guides
Verify webhook signatures
Compare the signature to the raw body with the secret you saved at signup.
Do this
Compare the signature to the raw body with the secret you saved at signup.
Then check the log
Open the message in the console. The status should move from queued to sent, delivered, or failed. The same change hits your webhook.
Spend
Live sends debit the wallet at $0.0083 per SMS segment per segment. Test keys do not replace 10DLC once you send real US A2P traffic.
FAQ
Do I need a card on day one?
You need balance to send live texts. Save a card to add funds or turn on auto top-up. Stripe charges stay off until the platform Stripe keys are configured.
What URL do I call?
POST https://api.txtnexus.com/v1/messages with a bearer API key.
Keep reading
Send from a wallet you control
$0.0083 per SMS segment. Add a card and the balance refills itself.