> 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.

# Ruby SDK Quickstart

> Learn how to send and receive your first RCS message

The Ruby SDK provides convenient tooling for sending and receiving RCS messages. You can also access these features through the REST API (see the [API reference](/api-reference/messages/send-rcs) for more details).

#### [Sending RCS Messages](ruby/send)

#### [Receiving RCS Messages](ruby/receive)