{
  "protocol": "VQX",
  "version": "0.3",
  "canonical_token": "unsigned byte 0x00-0xFF",
  "pua_container": {
    "base": "U+E000",
    "formula": "U+E000 + byte",
    "semantic_identity": false
  },
  "composition": {
    "description": "Tokens concatenate left to right. Typical unit: speech-act, role, zero or more actions, targets, constraints, then macros.",
    "pattern": "[speech_act] [role] [action*] [target*] [constraint*] [macro*]",
    "separator_id": 13,
    "separator_name": "SEP",
    "human_names_not_on_wire": true
  },
  "bootstrap": {
    "layout": [
      "beacon[6]",
      "version[1]",
      "flags[1]",
      "payload"
    ],
    "beacon_hex": "D3 A7 5C E1 9B 02",
    "version": 3,
    "allowed_flags_mask": 0,
    "max_payload_bytes_default": 65535
  },
  "compact": {
    "layout": [
      "payload"
    ],
    "when": "both peers explicitly negotiate VQX, compatible versions, matching dictionary SHA-256, policy compatibility, and usefulness",
    "parser_mode": "explicit compact mode is required for negotiated sessions; auto-detection is discovery-only"
  },
  "local_macros": {
    "define": {
      "opcode": 220,
      "hex": "DC",
      "frame": "DC | slot | len | tokens[len]"
    },
    "ref": {
      "opcode": 221,
      "hex": "DD",
      "frame": "DD | slot"
    },
    "clear": {
      "opcode": 222,
      "hex": "DE"
    },
    "table_hash": {
      "opcode": 223,
      "hex": "DF"
    },
    "slot_range": {
      "min": 224,
      "max": 255,
      "hex": "E0-FF"
    },
    "definition_content": "v0.3 definitions may contain global semantic bytes 00-DB only; nested control/local bytes DC-FF fail closed",
    "direct_local_slot_bytes": "invalid outside REF_LOCAL",
    "scope": "session and peer; never persist across unrelated peers",
    "max_expanded_bytes_default": 65535
  },
  "fail_closed": [
    "unknown_version",
    "unsupported_flags",
    "dictionary_mismatch",
    "malformed_macro",
    "undefined_local_slot",
    "direct_local_slot",
    "frame_size_limit",
    "macro_expansion_limit"
  ],
  "authorization": "Decoding EXECUTE, INSTALL, DIRECT, COMMIT, or any other intent never grants permission. Authorization belongs to the host runtime.",
  "automatic_installation": false
}