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HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the JSON format, set format=json.
See the complete documentation, or API help for more information.
{
    "query": {
        "namespaces": {
            "-2": {
                "id": -2,
                "case": "first-letter",
                "*": "M\u00e9dia",
                "canonical": "Media"
            },
            "-1": {
                "id": -1,
                "case": "first-letter",
                "*": "Sp\u00e9cial",
                "canonical": "Special"
            },
            "0": {
                "id": 0,
                "case": "first-letter",
                "*": "",
                "content": ""
            },
            "1": {
                "id": 1,
                "case": "first-letter",
                "*": "Discussion",
                "subpages": "",
                "canonical": "Talk"
            },
            "2": {
                "id": 2,
                "case": "first-letter",
                "*": "Utilisateur",
                "subpages": "",
                "canonical": "User"
            },
            "3": {
                "id": 3,
                "case": "first-letter",
                "*": "Discussion utilisateur",
                "subpages": "",
                "canonical": "User talk"
            },
            "4": {
                "id": 4,
                "case": "first-letter",
                "*": "Aide Battle Arenas",
                "subpages": "",
                "canonical": "Project"
            },
            "5": {
                "id": 5,
                "case": "first-letter",
                "*": "Discussion Aide Battle Arenas",
                "subpages": "",
                "canonical": "Project talk"
            },
            "6": {
                "id": 6,
                "case": "first-letter",
                "*": "Fichier",
                "canonical": "File"
            },
            "7": {
                "id": 7,
                "case": "first-letter",
                "*": "Discussion fichier",
                "subpages": "",
                "canonical": "File talk"
            },
            "8": {
                "id": 8,
                "case": "first-letter",
                "*": "MediaWiki",
                "subpages": "",
                "canonical": "MediaWiki"
            },
            "9": {
                "id": 9,
                "case": "first-letter",
                "*": "Discussion MediaWiki",
                "subpages": "",
                "canonical": "MediaWiki talk"
            },
            "10": {
                "id": 10,
                "case": "first-letter",
                "*": "Mod\u00e8le",
                "canonical": "Template"
            },
            "11": {
                "id": 11,
                "case": "first-letter",
                "*": "Discussion mod\u00e8le",
                "subpages": "",
                "canonical": "Template talk"
            },
            "12": {
                "id": 12,
                "case": "first-letter",
                "*": "Aide",
                "subpages": "",
                "canonical": "Help"
            },
            "13": {
                "id": 13,
                "case": "first-letter",
                "*": "Discussion aide",
                "subpages": "",
                "canonical": "Help talk"
            },
            "14": {
                "id": 14,
                "case": "first-letter",
                "*": "Cat\u00e9gorie",
                "canonical": "Category"
            },
            "15": {
                "id": 15,
                "case": "first-letter",
                "*": "Discussion cat\u00e9gorie",
                "subpages": "",
                "canonical": "Category talk"
            },
            "102": {
                "id": 102,
                "case": "first-letter",
                "*": "Attribut",
                "canonical": "Attribut"
            },
            "103": {
                "id": 103,
                "case": "first-letter",
                "*": "Discussion attribut",
                "subpages": "",
                "canonical": "Discussion attribut"
            },
            "106": {
                "id": 106,
                "case": "first-letter",
                "*": "Formulaire",
                "canonical": "Form"
            },
            "107": {
                "id": 107,
                "case": "first-letter",
                "*": "Discussion formulaire",
                "subpages": "",
                "canonical": "Form talk"
            },
            "108": {
                "id": 108,
                "case": "first-letter",
                "*": "Concept",
                "canonical": "Concept"
            },
            "109": {
                "id": 109,
                "case": "first-letter",
                "*": "Discussion concept",
                "canonical": "Discussion concept"
            }
        }
    }
}