Everything you need to send an SMS.
Guide, full API Reference and an MCP server for AI agents – pick a section and get started.
SMS API
Step-by-step guide: sending SMS, bulk sending, error codes, webhooks and 3CX – with examples in 5 languages.
OpenAPI Reference
Full, interactive reference generated from OpenAPI: endpoints, field schemas, response codes and webhooks.
OpenMCP Server
Send SMS straight from AI agents (Claude Code, Codex CLI, Gemini CLI) via the SENDLY MCP server.
OpenPython client
The official Python library for the SMS API: quick start, examples and open source code on GitHub.
OpenPHP client
The official PHP library for the SMS API: quick start, examples and open source code on GitHub.
OpenJavaScript client
The official JavaScript library for the SMS API: quick start, examples and open source code on GitHub.
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