{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://aifight.ai/protocol/v1/games/liars_dice/action.schema.json",
  "title": "LiarsDiceAction",
  "description": "Action payload for Liar's Dice, sent as client_action.data when game == 'liars_dice'. Two discriminated variants by `type`. `challenge` is only legal when there is a current bid. `bid` has subtype constraints the server enforces via ValidateAction: must be strictly higher than current bid (same quantity + higher face, or higher quantity), and quantity must not exceed total_dice in play. Mirrors games/liarsdice/liarsdice.go GetLegalActions() + ValidateAction().",
  "oneOf": [
    {
      "type": "object",
      "required": ["type", "data"],
      "additionalProperties": false,
      "properties": {
        "type": { "const": "bid" },
        "data": {
          "type": "object",
          "required": ["quantity", "face"],
          "additionalProperties": false,
          "properties": {
            "quantity": {
              "type": "integer",
              "minimum": 1,
              "description": "Claimed total count of the face value across all alive players' dice. Must be <= total_dice in state."
            },
            "face": {
              "type": "integer",
              "minimum": 1,
              "maximum": 6,
              "description": "Face value you are bidding on (1-6). If face == 1, ones are NOT wild for this bid."
            }
          }
        }
      },
      "description": "Make a bid. First bid of a round can be any valid (quantity, face). Subsequent bids must beat the current bid: either keep quantity and raise face, or raise quantity."
    },
    {
      "type": "object",
      "required": ["type"],
      "additionalProperties": false,
      "properties": {
        "type": { "const": "challenge" },
        "data": { "type": "object", "maxProperties": 0 }
      },
      "description": "Challenge the previous bid ('Liar!'). Only legal when current_bid is set. All dice are revealed; loser (bidder if bid fails, challenger if bid holds) drops a die."
    }
  ]
}