The Code of Claw was the secret code the Gnawers transmitted in Gregor and the Code of Claw. The code is arranged by keeping the letters G, O, R, and E in their spot in the alphabet, and moving every other letter ahead by one, which leaves this result:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| B | C | D | F | E | H | G | I | J | K | L | M | N | P | O | Q | S | R | T | U | V | W | X | Y | Z | A |
The code is transmitted by taps, clicks, and scratches using the Tree of Transmission.
The code was cracked by Lizzie in chapter 18 of The Code of Claw, and also brought the news of Twitchtip's death to Gregor.