Authentication & Authorization · head-to-head
GetOTP vs MojoAuth
GetOTP is a multichannel one-time-password verification API covering SMS, voice call, Telegram, and Viber, with built-in retry and delivery-fallback logic so teams skip building their own OTP pipeline. Requests are authenticated with an X-OTP-Key header against api.otp.dev/v1/verifications, and responses are plain JSON with account_id/message_id tracking fields. New accounts get 100 free verification requests before billing switches to pay-per-verification.
MojoAuth is a passwordless authentication API offering OTP over SMS/email, magic links, passkeys/WebAuthn, and social login, plus SSO connections (OIDC/SAML) for enterprise buyers. Every request to its api.mojoauth.com backend requires an X-API-Key header, returning structured JSON errors ("API Key Required" / "Invalid API Key") when the key is missing or wrong. Pricing is free up to 25,000 monthly active users, with paid Startup and Enterprise plans beyond that.
| GetOTP | MojoAuth | |
|---|---|---|
| Authentication | API Key | API Key |
| Pricing | metered | freemium |
| Formats | JSON | JSON |
| CORS | yes | yes |
| HTTPS | Yes | Yes |
MojoAuth is freemium, while GetOTP is metered — MojoAuth is the cheaper way in.