Details - HeadDB

Warning: The UUIDs are not real.

Command

/give @p skull 1 3 {display:{Name:"X",Lore:["Skull from HeadDB.org"]},SkullOwner:{Id:"8311ff2a-1b33-3c30-8f37-922a0a40e2ad",Properties:{textures:[{Value:"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvMTkxOWQxNTk0YmY4MDlkYjdiNDRiMzc4MmJmOTBhNjlmNDQ5YTg3Y2U1ZDE4Y2I0MGViNjUzZmRlYzI3MjIifX19"}]}}}

API Usage

GET https://headdb.org/api/head/8311ff2a-1b33-3c30-8f37-922a0a40e2ad

{
  "name": "X",
  "uuid": "8311ff2a-1b33-3c30-8f37-922a0a40e2ad",
  "value": "eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvMTkxOWQxNTk0YmY4MDlkYjdiNDRiMzc4MmJmOTBhNjlmNDQ5YTg3Y2U1ZDE4Y2I0MGViNjUzZmRlYzI3MjIifX19",
  "valueDecoded": {
    "textures": {
      "SKIN": {
        "url": "http://textures.minecraft.net/texture/1919d1594bf809db7b44b3782bf90a69f449a87ce5d18cb40eb653fdec2722"
      }
    }
  },
  "command": "/give @p skull 1 3 {display:{Name:\"X\",Lore:[\"Skull from HeadDB.org\"]},SkullOwner:{Id:\"8311ff2a-1b33-3c30-8f37-922a0a40e2ad\",Properties:{textures:[{Value:\"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvMTkxOWQxNTk0YmY4MDlkYjdiNDRiMzc4MmJmOTBhNjlmNDQ5YTg3Y2U1ZDE4Y2I0MGViNjUzZmRlYzI3MjIifX19\"}]}}}"
}

Minecraft Head Database

GET https://headdb.org/api/head/8311ff2a-1b33-3c30-8f37-922a0a40e2ad