{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/lichess/main/json-schema/lichess-user-schema.json",
  "title": "Lichess User",
  "description": "Public profile data for a Lichess user. Extracted from the Lichess API LightUser, User, and UserExtended response shapes.",
  "type": "object",
  "required": ["id", "username"],
  "properties": {
    "id": {
      "type": "string",
      "description": "Lowercased canonical username used as the user identifier."
    },
    "username": {
      "type": "string",
      "description": "Display username with original case."
    },
    "title": {
      "type": "string",
      "description": "FIDE title or special title such as GM, IM, FM, BOT.",
      "enum": ["GM", "WGM", "IM", "WIM", "FM", "WFM", "NM", "CM", "WCM", "WNM", "LM", "BOT"]
    },
    "patron": {
      "type": "boolean",
      "description": "True when the user is a current Lichess Patron donor."
    },
    "online": {
      "type": "boolean",
      "description": "True when the user is currently online."
    },
    "playing": {
      "type": "boolean",
      "description": "True when the user is currently in a game."
    },
    "streaming": {
      "type": "boolean",
      "description": "True when the user is streaming on a connected streaming platform."
    },
    "tosViolation": {
      "type": "boolean",
      "description": "True if the user has been marked for a terms of service violation."
    },
    "createdAt": {
      "type": "integer",
      "description": "Account creation timestamp in milliseconds since the Unix epoch."
    },
    "seenAt": {
      "type": "integer",
      "description": "Most recent activity timestamp in milliseconds since the Unix epoch."
    },
    "playTime": {
      "type": "object",
      "properties": {
        "total": {"type": "integer", "description": "Total play time in seconds."},
        "tv": {"type": "integer", "description": "Total TV time in seconds."}
      }
    },
    "language": {
      "type": "string",
      "description": "User's preferred language as a BCP 47 tag."
    },
    "url": {
      "type": "string",
      "format": "uri",
      "description": "Canonical URL to the user's Lichess profile."
    },
    "perfs": {
      "type": "object",
      "description": "Per-time-control performance statistics keyed by perf name (bullet, blitz, rapid, classical, correspondence, chess960, etc.).",
      "additionalProperties": {
        "type": "object",
        "properties": {
          "games": {"type": "integer"},
          "rating": {"type": "integer"},
          "rd": {"type": "integer", "description": "Glicko-2 rating deviation."},
          "prog": {"type": "integer", "description": "Recent rating progress over the last twelve games."},
          "prov": {"type": "boolean", "description": "True when the rating is still provisional."}
        }
      }
    },
    "profile": {
      "type": "object",
      "description": "Self-reported profile fields.",
      "properties": {
        "bio": {"type": "string"},
        "flag": {"type": "string", "description": "Country flag code."},
        "location": {"type": "string"},
        "links": {"type": "string", "description": "User-provided links, one per line."},
        "fideRating": {"type": "integer"},
        "uscfRating": {"type": "integer"},
        "ecfRating": {"type": "integer"}
      }
    },
    "count": {
      "type": "object",
      "description": "Aggregate game counts.",
      "properties": {
        "all": {"type": "integer"},
        "rated": {"type": "integer"},
        "ai": {"type": "integer"},
        "draw": {"type": "integer"},
        "drawH": {"type": "integer"},
        "loss": {"type": "integer"},
        "lossH": {"type": "integer"},
        "win": {"type": "integer"},
        "winH": {"type": "integer"},
        "bookmark": {"type": "integer"},
        "playing": {"type": "integer"},
        "import": {"type": "integer"},
        "me": {"type": "integer"}
      }
    }
  }
}