"à la clé" meaning in French

{
  "head_templates": [
    {
      "args": {},
      "expansion": "à la clé",
      "name": "fr-prep phrase"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "prep_phrase",
  "senses": [
    {
      "glosses": [
        "as a reward, at stake, up for grabs"
      ],
      "id": "en-à_la_clé-fr-prep_phrase-iZqPH662",
      "links": [
        [
          "reward",
          "reward"
        ],
        [
          "at stake",
          "at stake"
        ],
        [
          "up for grabs",
          "up for grabs"
        ]
      ]
    },
    {
      "categories": [
        {
          "kind": "other",
          "name": "French terms with collocations",
          "parents": [
            "Terms with collocations",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "fr",
          "name": "Music",
          "orig": "fr:Music",
          "parents": [
            "Art",
            "Sound",
            "Culture",
            "Energy",
            "Society",
            "Nature",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "_dis": "40 60",
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "english": "three flats in the key signature",
          "text": "trois bémols à la clé",
          "type": "example"
        }
      ],
      "glosses": [
        "in the key signature"
      ],
      "id": "en-à_la_clé-fr-prep_phrase-iDlHNLdw",
      "links": [
        [
          "music",
          "music"
        ],
        [
          "key signature",
          "key signature"
        ]
      ],
      "raw_glosses": [
        "(music) in the key signature"
      ],
      "topics": [
        "entertainment",
        "lifestyle",
        "music"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/a la kle/"
    },
    {
      "audio": "LL-Q150 (fra)-LoquaxFR-à la clé.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/c/c4/LL-Q150_%28fra%29-LoquaxFR-%C3%A0_la_cl%C3%A9.wav/LL-Q150_%28fra%29-LoquaxFR-%C3%A0_la_cl%C3%A9.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/c/c4/LL-Q150_%28fra%29-LoquaxFR-%C3%A0_la_cl%C3%A9.wav/LL-Q150_%28fra%29-LoquaxFR-%C3%A0_la_cl%C3%A9.wav.ogg",
      "text": "Audio"
    }
  ],
  "synonyms": [
    {
      "_dis1": "0 0",
      "word": "à la clef"
    }
  ],
  "word": "à la clé"
}

{
  "categories": [
    "French entries with incorrect language header",
    "French lemmas",
    "French multiword terms",
    "French prepositional phrases",
    "French terms with IPA pronunciation",
    "French terms with audio links"
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "à la clé",
      "name": "fr-prep phrase"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "prep_phrase",
  "senses": [
    {
      "glosses": [
        "as a reward, at stake, up for grabs"
      ],
      "links": [
        [
          "reward",
          "reward"
        ],
        [
          "at stake",
          "at stake"
        ],
        [
          "up for grabs",
          "up for grabs"
        ]
      ]
    },
    {
      "categories": [
        "French terms with collocations",
        "fr:Music"
      ],
      "examples": [
        {
          "english": "three flats in the key signature",
          "text": "trois bémols à la clé",
          "type": "example"
        }
      ],
      "glosses": [
        "in the key signature"
      ],
      "links": [
        [
          "music",
          "music"
        ],
        [
          "key signature",
          "key signature"
        ]
      ],
      "raw_glosses": [
        "(music) in the key signature"
      ],
      "topics": [
        "entertainment",
        "lifestyle",
        "music"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/a la kle/"
    },
    {
      "audio": "LL-Q150 (fra)-LoquaxFR-à la clé.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/c/c4/LL-Q150_%28fra%29-LoquaxFR-%C3%A0_la_cl%C3%A9.wav/LL-Q150_%28fra%29-LoquaxFR-%C3%A0_la_cl%C3%A9.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/c/c4/LL-Q150_%28fra%29-LoquaxFR-%C3%A0_la_cl%C3%A9.wav/LL-Q150_%28fra%29-LoquaxFR-%C3%A0_la_cl%C3%A9.wav.ogg",
      "text": "Audio"
    }
  ],
  "synonyms": [
    {
      "word": "à la clef"
    }
  ],
  "word": "à la clé"
}