You are looking at the HTML representation of the JSON format.
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",
                "*": "\u041c\u0435\u0434\u0438\u0430",
                "canonical": "Media"
            },
            "-1": {
                "id": -1,
                "case": "first-letter",
                "*": "\u0421\u043b\u0443\u0436\u0435\u0431\u043d\u0430\u044f",
                "canonical": "Special"
            },
            "0": {
                "id": 0,
                "case": "first-letter",
                "*": "",
                "content": ""
            },
            "1": {
                "id": 1,
                "case": "first-letter",
                "*": "\u041e\u0431\u0441\u0443\u0436\u0434\u0435\u043d\u0438\u0435",
                "subpages": "",
                "canonical": "Talk"
            },
            "2": {
                "id": 2,
                "case": "first-letter",
                "*": "\u0423\u0447\u0430\u0441\u0442\u043d\u0438\u043a",
                "subpages": "",
                "canonical": "User"
            },
            "3": {
                "id": 3,
                "case": "first-letter",
                "*": "\u041e\u0431\u0441\u0443\u0436\u0434\u0435\u043d\u0438\u0435 \u0443\u0447\u0430\u0441\u0442\u043d\u0438\u043a\u0430",
                "subpages": "",
                "canonical": "User talk"
            },
            "4": {
                "id": 4,
                "case": "first-letter",
                "*": "wiki.standart-n.ru",
                "subpages": "",
                "canonical": "Project"
            },
            "5": {
                "id": 5,
                "case": "first-letter",
                "*": "\u041e\u0431\u0441\u0443\u0436\u0434\u0435\u043d\u0438\u0435 wiki.standart-n.ru",
                "subpages": "",
                "canonical": "Project talk"
            },
            "6": {
                "id": 6,
                "case": "first-letter",
                "*": "\u0424\u0430\u0439\u043b",
                "canonical": "File"
            },
            "7": {
                "id": 7,
                "case": "first-letter",
                "*": "\u041e\u0431\u0441\u0443\u0436\u0434\u0435\u043d\u0438\u0435 \u0444\u0430\u0439\u043b\u0430",
                "subpages": "",
                "canonical": "File talk"
            },
            "8": {
                "id": 8,
                "case": "first-letter",
                "*": "MediaWiki",
                "subpages": "",
                "canonical": "MediaWiki"
            },
            "9": {
                "id": 9,
                "case": "first-letter",
                "*": "\u041e\u0431\u0441\u0443\u0436\u0434\u0435\u043d\u0438\u0435 MediaWiki",
                "subpages": "",
                "canonical": "MediaWiki talk"
            },
            "10": {
                "id": 10,
                "case": "first-letter",
                "*": "\u0428\u0430\u0431\u043b\u043e\u043d",
                "canonical": "Template"
            },
            "11": {
                "id": 11,
                "case": "first-letter",
                "*": "\u041e\u0431\u0441\u0443\u0436\u0434\u0435\u043d\u0438\u0435 \u0448\u0430\u0431\u043b\u043e\u043d\u0430",
                "subpages": "",
                "canonical": "Template talk"
            },
            "12": {
                "id": 12,
                "case": "first-letter",
                "*": "\u0421\u043f\u0440\u0430\u0432\u043a\u0430",
                "subpages": "",
                "canonical": "Help"
            },
            "13": {
                "id": 13,
                "case": "first-letter",
                "*": "\u041e\u0431\u0441\u0443\u0436\u0434\u0435\u043d\u0438\u0435 \u0441\u043f\u0440\u0430\u0432\u043a\u0438",
                "subpages": "",
                "canonical": "Help talk"
            },
            "14": {
                "id": 14,
                "case": "first-letter",
                "*": "\u041a\u0430\u0442\u0435\u0433\u043e\u0440\u0438\u044f",
                "canonical": "Category"
            },
            "15": {
                "id": 15,
                "case": "first-letter",
                "*": "\u041e\u0431\u0441\u0443\u0436\u0434\u0435\u043d\u0438\u0435 \u043a\u0430\u0442\u0435\u0433\u043e\u0440\u0438\u0438",
                "subpages": "",
                "canonical": "Category talk"
            },
            "100": {
                "id": 100,
                "case": "first-letter",
                "*": "Help",
                "canonical": "Help",
                "nonincludable": ""
            },
            "101": {
                "id": 101,
                "case": "first-letter",
                "*": "Help talk",
                "canonical": "Help talk",
                "nonincludable": ""
            },
            "102": {
                "id": 102,
                "case": "first-letter",
                "*": "Problems",
                "canonical": "Problems",
                "nonincludable": ""
            },
            "103": {
                "id": 103,
                "case": "first-letter",
                "*": "Problems talk",
                "canonical": "Problems talk",
                "nonincludable": ""
            },
            "104": {
                "id": 104,
                "case": "first-letter",
                "*": "Clients",
                "canonical": "Clients",
                "nonincludable": ""
            },
            "105": {
                "id": 105,
                "case": "first-letter",
                "*": "Clients talk",
                "canonical": "Clients talk",
                "nonincludable": ""
            },
            "106": {
                "id": 106,
                "case": "first-letter",
                "*": "Reglament",
                "canonical": "Reglament",
                "nonincludable": ""
            },
            "107": {
                "id": 107,
                "case": "first-letter",
                "*": "Reglament talk",
                "canonical": "Reglament talk",
                "nonincludable": ""
            },
            "108": {
                "id": 108,
                "case": "first-letter",
                "*": "Duty",
                "canonical": "Duty",
                "nonincludable": ""
            },
            "109": {
                "id": 109,
                "case": "first-letter",
                "*": "Duty talk",
                "canonical": "Duty talk",
                "nonincludable": ""
            },
            "110": {
                "id": 110,
                "case": "first-letter",
                "*": "Contacts",
                "canonical": "Contacts",
                "nonincludable": ""
            },
            "111": {
                "id": 111,
                "case": "first-letter",
                "*": "Contacts talk",
                "canonical": "Contacts talk",
                "nonincludable": ""
            },
            "112": {
                "id": 112,
                "case": "first-letter",
                "*": "Versions",
                "canonical": "Versions",
                "nonincludable": ""
            },
            "113": {
                "id": 113,
                "case": "first-letter",
                "*": "Versions talk",
                "canonical": "Versions talk",
                "nonincludable": ""
            },
            "114": {
                "id": 114,
                "case": "first-letter",
                "*": "Econv",
                "canonical": "Econv",
                "nonincludable": ""
            },
            "115": {
                "id": 115,
                "case": "first-letter",
                "*": "Econv talk",
                "canonical": "Econv talk",
                "nonincludable": ""
            },
            "116": {
                "id": 116,
                "case": "first-letter",
                "*": "Vnedrenie",
                "canonical": "Vnedrenie",
                "nonincludable": ""
            },
            "117": {
                "id": 117,
                "case": "first-letter",
                "*": "Vnedrenie talk",
                "canonical": "Vnedrenie talk",
                "nonincludable": ""
            },
            "118": {
                "id": 118,
                "case": "first-letter",
                "*": "Managers",
                "canonical": "Managers",
                "nonincludable": ""
            },
            "119": {
                "id": 119,
                "case": "first-letter",
                "*": "Managers talk",
                "canonical": "Managers talk",
                "nonincludable": ""
            },
            "120": {
                "id": 120,
                "case": "first-letter",
                "*": "SysAdmin",
                "canonical": "SysAdmin",
                "nonincludable": ""
            },
            "121": {
                "id": 121,
                "case": "first-letter",
                "*": "SysAdmin talk",
                "canonical": "SysAdmin talk",
                "nonincludable": ""
            },
            "122": {
                "id": 122,
                "case": "first-letter",
                "*": "Developers",
                "canonical": "Developers",
                "nonincludable": ""
            },
            "123": {
                "id": 123,
                "case": "first-letter",
                "*": "Developers talk",
                "canonical": "Developers talk",
                "nonincludable": ""
            }
        }
    }
}