Twilio Node.js SDK
Twilio's official server-side API helper library.
SMSUnified SDK
SMS SDK
One transactional SMS API across six messaging providers.
@opencoredev/sms-sdkTypeScript / JavaScript
Overview
OpenCore's adapter layer normalizes sends and verified webhooks, with fallback restricted to known provider rejection.
Best for
Transactional SMS with explicit failure and fallback behavior.
Install
TypeScript / JavaScriptnpm install @opencoredev/sms-sdkListed providers
6 listed- Twilio
- Telnyx
- Plivo
- Vonage
- Bandwidth
- Sinch
Provider coverage does not imply identical APIs or features. Check the documentation for the integration you plan to use.
Features
- Typed sends
- Known-rejection fallback
- Normalized verified webhooks
- In-memory testing adapter
Caveats
- Unknown delivery outcomes stop fallback to reduce duplicate-send risk.
- Provider accounts, sender setup, and service charges remain separate.
- Server-side ESM for Node.js 20+ or Bun.
Sources & verification
- github.com/opencoredev/sms-sdk (opens in a new tab)
- raw.githubusercontent.com/opencoredev/sms-sdk/main/README.md (opens in a new tab)
- sms-sdk.com (opens in a new tab)
Sources reviewed