> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.pinnacle.sh/v-2/changelog/2026/1/29/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.pinnacle.sh/_mcp/server.

## Ruby SDK

Pinnacle now has a **Ruby SDK** — the third official SDK alongside Python and TypeScript.

### What's new?

**Ruby SDK**

Full coverage of the Pinnacle API in idiomatic Ruby. Send SMS, MMS, and RCS messages, manage contacts and audiences, handle webhooks, and more.

* Available as the [`rcs`](https://rubygems.org/gems/rcs) gem
* Webhook processing with signature verification via the `process` method
* File uploads with `upload_from_path`

Get started with our [Ruby quickstart guides](/quickstart/sms/ruby) for SMS and [RCS](/quickstart/rcs/ruby).

> **Note**
>
> Have questions? Reach out to us - [founders@pinnacle.sh](mailto:founders@pinnacle.sh)

> One API for RCS, iMessage, MMS, and SMS. Build, test, and scale every channel — send your first message in minutes, not weeks.