USAGE

   /system/stats.json

TL;DR;

Shows local system metrics.

DESCRIPTION

   cpus_total          Total number of available CPUs
   load_1min           Average system load for last minute in uptime(1) style
   load_5min           Average system load for last 5 minutes in uptime(1) style
   load_15min          Average system load for last 15 minutes in uptime(1) style
   memory_total_bytes  Total system memory in bytes
   memory_free_bytes   Free system memory in bytes