# Project Blue API

Send iMessage and SMS from your own application. Integrate messaging into your CRM, workflows, or custom tools with a single API call.

The API is organised around REST. It accepts JSON request bodies, returns JSON responses, and uses standard HTTP verbs and status codes. Every request is authenticated with a bearer token.

> **Reading this with an AI assistant?**
>
> Every section is also served as Markdown. [/llms.txt](https://api.tryprojectblue.com/llms.txt) indexes them, [/llms-full.txt](https://api.tryprojectblue.com/llms-full.txt) is the whole reference in one file, and each section has its own `/llms/<section>.md` — the **View as Markdown** link at the top of each section points at it. Point your agent at those rather than scraping the page.

### Base URL