> This page is for version v1.
> For other versions, use one of these documentation indexes:
> - v2 (default): https://docs.pinnacle.sh/v-2/llms.txt
> - v1: https://docs.pinnacle.sh/v1/llms.txt

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

# Introduction

> **New version available!**
>
> You are viewing the **Pinnacle API v1** documentation. A newer version is
> available — check out the [v2 docs →](/documentation/introduction).

Our API lets you send SMS, MMS, and RCS messages with just a few lines of code. We handle compliance and carrier rules, so you can focus on building fast, reliable messaging.

## Quickstart

Talk to your customers in seconds through our APIs and SDKs.

#### [Python ↗](https://pypi.org/project/rcs/)

Use our Python SDK to send messages.

#### [TypeScript ↗](https://www.npmjs.com/package/rcs-js)

Use our TypeScript SDK to send messages.

#### [Ruby ↗](https://rubygems.org/gems/rcs)

Use our Ruby SDK to send messages.

## Contact Us

Drop us an email at [founders@pinnacle.sh](mailto:founders@pinnacle.sh).