# Pinnacle | Documentation

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

## Instructions for AI Agents

- For clean Markdown of any page, append `.md` to the page URL
- For section-specific indexes, append `/llms.txt` to any section URL
- For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.pinnacle.sh/_mcp/server

## Versions

- [v2](https://docs.pinnacle.sh/v-2/llms.txt) (default)
- [v1](https://docs.pinnacle.sh/v1/llms.txt)