"allt gott" meaning in Icelandic

{
  "etymology_text": "As a response to hvað segirðu (“how are you?”, literally “what do you say?”), signifying [ég segi] allt gott (literally “[I say] everything good”).",
  "head_templates": [
    {
      "args": {
        "1": "is",
        "2": "phrase"
      },
      "expansion": "allt gott",
      "name": "head"
    }
  ],
  "lang": "Icelandic",
  "lang_code": "is",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Icelandic entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Icelandic entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Icelandic phrasebook",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "Hvað segirðu? – Allt gott.\nHow are you? – Good!",
          "type": "example"
        }
      ],
      "glosses": [
        "good!, I'm fine! (positive response to “how are you?”)"
      ],
      "id": "en-allt_gott-is-phrase-xGDUbUmK",
      "links": [
        [
          "good",
          "good"
        ],
        [
          "I'm fine",
          "I'm fine"
        ]
      ]
    }
  ],
  "word": "allt gott"
}

{
  "etymology_text": "As a response to hvað segirðu (“how are you?”, literally “what do you say?”), signifying [ég segi] allt gott (literally “[I say] everything good”).",
  "head_templates": [
    {
      "args": {
        "1": "is",
        "2": "phrase"
      },
      "expansion": "allt gott",
      "name": "head"
    }
  ],
  "lang": "Icelandic",
  "lang_code": "is",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        "Icelandic entries with incorrect language header",
        "Icelandic entries with language name categories using raw markup",
        "Icelandic lemmas",
        "Icelandic multiword terms",
        "Icelandic phrasebook",
        "Icelandic phrases",
        "Icelandic terms with usage examples"
      ],
      "examples": [
        {
          "text": "Hvað segirðu? – Allt gott.\nHow are you? – Good!",
          "type": "example"
        }
      ],
      "glosses": [
        "good!, I'm fine! (positive response to “how are you?”)"
      ],
      "links": [
        [
          "good",
          "good"
        ],
        [
          "I'm fine",
          "I'm fine"
        ]
      ]
    }
  ],
  "word": "allt gott"
}