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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",
                "*": "Media",
                "canonical": "Media"
            },
            "-1": {
                "id": -1,
                "case": "first-letter",
                "*": "Special",
                "canonical": "Special"
            },
            "0": {
                "id": 0,
                "case": "first-letter",
                "*": "",
                "content": ""
            },
            "1": {
                "id": 1,
                "case": "first-letter",
                "*": "Talk",
                "subpages": "",
                "canonical": "Talk"
            },
            "2": {
                "id": 2,
                "case": "first-letter",
                "*": "User",
                "subpages": "",
                "canonical": "User"
            },
            "3": {
                "id": 3,
                "case": "first-letter",
                "*": "User talk",
                "subpages": "",
                "canonical": "User talk"
            },
            "4": {
                "id": 4,
                "case": "first-letter",
                "*": "Leading practice",
                "subpages": "",
                "canonical": "Project"
            },
            "5": {
                "id": 5,
                "case": "first-letter",
                "*": "Leading practice talk",
                "subpages": "",
                "canonical": "Project talk"
            },
            "6": {
                "id": 6,
                "case": "first-letter",
                "*": "File",
                "canonical": "File"
            },
            "7": {
                "id": 7,
                "case": "first-letter",
                "*": "File talk",
                "subpages": "",
                "canonical": "File talk"
            },
            "8": {
                "id": 8,
                "case": "first-letter",
                "*": "MediaWiki",
                "subpages": "",
                "canonical": "MediaWiki"
            },
            "9": {
                "id": 9,
                "case": "first-letter",
                "*": "MediaWiki talk",
                "subpages": "",
                "canonical": "MediaWiki talk"
            },
            "10": {
                "id": 10,
                "case": "first-letter",
                "*": "Template",
                "canonical": "Template"
            },
            "11": {
                "id": 11,
                "case": "first-letter",
                "*": "Template talk",
                "subpages": "",
                "canonical": "Template talk"
            },
            "12": {
                "id": 12,
                "case": "first-letter",
                "*": "Help",
                "subpages": "",
                "canonical": "Help"
            },
            "13": {
                "id": 13,
                "case": "first-letter",
                "*": "Help talk",
                "subpages": "",
                "canonical": "Help talk"
            },
            "14": {
                "id": 14,
                "case": "first-letter",
                "*": "Category",
                "canonical": "Category"
            },
            "15": {
                "id": 15,
                "case": "first-letter",
                "*": "Category talk",
                "subpages": "",
                "canonical": "Category talk"
            },
            "102": {
                "id": 102,
                "case": "first-letter",
                "*": "Property",
                "canonical": "Property"
            },
            "103": {
                "id": 103,
                "case": "first-letter",
                "*": "Property talk",
                "subpages": "",
                "canonical": "Property talk"
            },
            "104": {
                "id": 104,
                "case": "first-letter",
                "*": "Type",
                "canonical": "Type"
            },
            "105": {
                "id": 105,
                "case": "first-letter",
                "*": "Type talk",
                "subpages": "",
                "canonical": "Type talk"
            },
            "108": {
                "id": 108,
                "case": "first-letter",
                "*": "Concept",
                "canonical": "Concept"
            },
            "109": {
                "id": 109,
                "case": "first-letter",
                "*": "Concept talk",
                "subpages": "",
                "canonical": "Concept talk"
            },
            "5000": {
                "id": 5000,
                "case": "first-letter",
                "*": "Objects",
                "canonical": "Objects"
            },
            "5001": {
                "id": 5001,
                "case": "first-letter",
                "*": "Matrices",
                "canonical": "Matrices"
            },
            "5002": {
                "id": 5002,
                "case": "first-letter",
                "*": "Maps",
                "canonical": "Maps"
            },
            "5003": {
                "id": 5003,
                "case": "first-letter",
                "*": "Models",
                "canonical": "Models"
            },
            "5004": {
                "id": 5004,
                "case": "first-letter",
                "*": "Layers",
                "canonical": "Layers"
            },
            "5005": {
                "id": 5005,
                "case": "first-letter",
                "*": "Enterprise Standards",
                "canonical": "Enterprise Standards"
            },
            "5006": {
                "id": 5006,
                "case": "first-letter",
                "*": "Industry Standards",
                "canonical": "Industry Standards"
            },
            "5007": {
                "id": 5007,
                "case": "first-letter",
                "*": "Plans",
                "canonical": "Plans"
            },
            "5008": {
                "id": 5008,
                "case": "first-letter",
                "*": "Trends",
                "canonical": "Trends"
            },
            "5009": {
                "id": 5009,
                "case": "first-letter",
                "*": "Industry",
                "canonical": "Industry"
            },
            "5010": {
                "id": 5010,
                "case": "first-letter",
                "*": "LEAD Reference Content",
                "canonical": "LEAD Reference Content"
            },
            "5011": {
                "id": 5011,
                "case": "first-letter",
                "*": "Hot Topics",
                "canonical": "Hot Topics"
            },
            "5012": {
                "id": 5012,
                "case": "first-letter",
                "*": "FLP",
                "canonical": "FLP"
            },
            "5013": {
                "id": 5013,
                "case": "first-letter",
                "*": "ALP",
                "canonical": "ALP"
            },
            "5999": {
                "id": 5999,
                "case": "first-letter",
                "*": "Temp",
                "canonical": "Temp"
            }
        }
    }
}