Crystade Uptime Monitor

A small WordPress plugin proof for an external uptime-monitoring integration. It exposes GET /wp-json/crystade/v1/status and returns a compact JSON health report without publishing WordPress, PHP, plugin, or theme version numbers.

Checks returned

• Database connectivity (critical if unavailable)
• WordPress maintenance mode (critical when active)
• Overdue cron-event count (degraded when non-zero)
• Free-disk percentage (degraded below 10%)
• Counts of available core, plugin, and theme updates

The endpoint returns HTTP 503 for critical failures and HTTP 200 for healthy or degraded states. The JSON status field lets Crystade distinguish ok, degraded, and critical results.

Installation

1. Copy this directory into wp-content/plugins/.

2. Add a long random token to wp-config.php:

   define('CRYSTADE_MONITOR_TOKEN', 'replace-with-a-long-random-secret');

3. Activate Crystade Uptime Monitor in WordPress.

4. Configure Crystade to call:

   https://example.com/wp-json/crystade/v1/status

   with the request header:

   Authorization: Bearer replace-with-a-long-random-secret

The route fails closed with HTTP 503 if no token is configured. Responses use Cache-Control: no-store so monitoring data is not cached by intermediaries.

Verification

The plugin is linted and its route, authentication, privacy, health-state, and HTTP-status behavior are exercised in a self-contained PHP test harness:

php -l crystade-uptime-monitor.php
php tests/test-plugin.php

The current verification run used PHP 8.5.10 on Windows and passed syntax validation plus all 13 behavioral assertions.

The exact Crystade authentication and response schema should be confirmed with the client before final integration. This proof intentionally keeps the transport adapter small so the payload can be mapped to their documented schema without rewriting the WordPress health checks.