This is tool to generate chord diagrams, with help of kord. It is used for conchord Typst package, see this repo for good visualizations.
Just input the chord and get the fret numbers. For complex chords, ? marks the variations with skipped perfect fifth (not "true" chord, but it's okay to use it instead).
$ cargo run --bin cli --quiet -- "Cmaj7/E"
032000
022010
032400?
032003
xx2410?
032403
02x010
022013
032x00?
022x10?
03x400?
03x000
x75557
0324x0?
032x03
02x410?
0x2410?
03x410?
032410?
022410?
x, 7, 10, 9, 8, 7
x79557?
x79558?
0324x3
022x13
02xx10?
03xx00?
03x4x0?
x7x557?
0xx410?
0x2413
x799x8?
12, 10, 10, x, 12, 12
x, 7, 10, 9, x, 7?
x7x458?
x79x58?
12, x, 9, 9, 8, 8
12, x, 9, 9, 13, 12?
12, x, 10, x, 12, 12?
12, x, 9, 9, x, 8?
12, x, x, 9, 12, 8?
12, x, 9, x, 13, 12?
12, 14, 10, x, x, 12?