Commands

node epson.mjs ink   # list remaining ink cartridge levels as JSON

Output

Returns a JSON array of { "color": string, "level": number | null } objects. level is 0–100 (percent remaining), or null if the printer reports an unknown level.

Example:

[
  { "color": "Black",   "level": 72 },
  { "color": "Cyan",    "level": 45 },
  { "color": "Magenta", "level": 30 },
  { "color": "Yellow",  "level": 88 }
]