# Montastic

> Montastic is a website uptime monitoring service. You add URLs
> ("checkpoints") to monitor and get alerted by email, SMS, or webhook when
> they go down or when a keyword appears/disappears on a page. This file
> helps AI agents and tools discover and use the API.

## API

- [OpenAPI specification (JSON)](https://www.montastic.com/openapi.json): Machine-readable REST API contract (OpenAPI 3.1).
- [OpenAPI specification (YAML)](https://www.montastic.com/openapi.yaml): Same contract, in YAML.
- [Developer reference](https://www.montastic.com/developers): Human-readable, interactive API docs.

## Authentication

- [Your API key](https://www.montastic.com/me): Log in and copy your key, then send it as the `X-API-KEY` header on every request.

## Notes

- A "checkpoint" is a single URL Montastic monitors.
- Create one with `POST /checkpoints` and a JSON body `{"checkpoint":{"url":"https://example.com"}}`.