| ; CTX protocol layer grammar | |
| <ctx-root> ::= "CTX." <ctx-namespace> "." <ctx-key> [ "." <ctx-value> ] | |
| <ctx-namespace> ::= "user" | |
| | "identity" | |
| | "state" | |
| | "intent" | |
| | "behavior" | |
| | "memory" | |
| | "thought" | |
| | "safety" | |
| | "response" | |
| <ctx-key> ::= <identifier> | |
| <ctx-value> ::= <identifier> | |
| <identifier> ::= <alpha> { <alpha> | <digit> | "_" }* | |
| <alpha> ::= "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" | |
| | "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" | |
| <digit> ::= "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9" | |