.conkyrc

background    	no
out_to_console 	yes
out_to_x		no
update_interval	2
total_run_times	0
short_units		yes
pad_percents	3
override_utf8_locale yes

TEXT
,[{"full_text": " "},
  {"full_text": " $cpu%","icon":"/path/to/icons/cpu.xbm","color": "\#99D7FF"},
  {"full_text": " $memfree", "icon":"/path/to/icons/mem.xbm", "color":"\#F3D194"},
  {"full_text": " "}
]

i3barconky.sh

#!/bin/bash

echo "{\"version\":1}"
echo "[[]"
conky