OpenAPI

1. OpenAPI API

 ## Overview

 openapi.php is the new JSON API endpoint based on the OpenAPI specification.

 The API uses the existing MirtaPBX API keys:

 - Full API key: APIKEY
 - Read-only API key: READONLYAPIKEY

 Both global and tenant-level keys are supported.

 The first implemented API object is extension, with a list endpoint returning extension ID, number, name, and technology.

 ## OpenAPI Specification

 The OpenAPI specification is available from:

 openapi.php
 openapi.php?spec=1
 openapi.php/openapi.json
 openapi.php/swagger.json

 The response is an OpenAPI 3.0.3 JSON document.

 ## Authentication

 The API key can be provided in any of these ways:

 ### Query Parameter

 openapi.php/extensions?tenant=TENANTCODE&key=APIKEY

 ### Header

 X-API-Key: APIKEY

 ### Bearer Token