Securing your Noir SMS account
Quick answer
Turn on two-factor authentication in your account settings and scan the QR code with an authenticator app. Use a unique password, or sign in with a Google account that has its own 2FA. If you use the API, keep the nsk_live_ key on your server only, never in an app or public repository, and regenerate it from the API page if it leaks.
Your account holds a balance, so it's worth the two minutes it takes to lock it down.
Checklist
- Two-factor authentication with an authenticator app.
- A unique password from a password manager.
- Regenerate your API key if you ever shared or committed it.
- Verify webhook signatures so nobody can fake sms.received events.
Watch for phishing
Log in only at noirsms.com. Noir SMS support will never ask for your password or 2FA codes.
Frequently asked questions
Can I use SMS for my Noir SMS 2FA?
Two-factor authentication uses an authenticator app.
I lost my authenticator. What now?
Open a ticket or email support from your account address.
Services in this guide
Keep reading
Two-Factor Authentication Explained: SMS, Authenticator Apps, Passkeys and Security Keys
2FA explained: SMS codes, authenticator apps, passkeys and hardware security keys compared, with clear recommendations for your accounts.
Read the guide →Your accountCreating a Noir SMS account
Sign up for Noir SMS with an email and password or with Google, add funds and get your first virtual number. What you need and what happens next.
Read the guide →DevelopersCommon Noir SMS API errors and how to handle them
Every Noir SMS API error code explained: invalid_api_key, insufficient_balance, no_numbers, too_early, rate_limited and more, with a retry pattern.
Read the guide →Your accountAdding funds to your Noir SMS balance
Top up your Noir SMS balance by card through Stripe or with USDC or SOL on Solana. Minimums, bonuses and how long each method takes.
Read the guide →Your accountDoes Noir SMS balance expire?
No. Your Noir SMS balance never expires. What counts as balance, how refunds and affiliate earnings are added, and what happens to unused funds.
Read the guide →Your accountViewing your numbers and transactions
Where to find the numbers you bought, the codes they received and your top-ups and refunds in the Noir SMS dashboard and API.
Read the guide →