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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 YAML format, set format=yaml.
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{
    "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",
                "*": "Pasco Public Knowledgebase",
                "subpages": "",
                "canonical": "Project"
            },
            "5": {
                "id": 5,
                "case": "first-letter",
                "*": "Pasco Public Knowledgebase 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"
            },
            "90": {
                "id": 90,
                "case": "first-letter",
                "*": "Thread",
                "canonical": "Thread"
            },
            "91": {
                "id": 91,
                "case": "first-letter",
                "*": "Thread talk",
                "canonical": "Thread talk"
            },
            "92": {
                "id": 92,
                "case": "first-letter",
                "*": "Summary",
                "canonical": "Summary"
            },
            "93": {
                "id": 93,
                "case": "first-letter",
                "*": "Summary talk",
                "canonical": "Summary talk"
            },
            "100": {
                "id": 100,
                "case": "first-letter",
                "*": "Procedures",
                "canonical": "Procedures"
            },
            "101": {
                "id": 101,
                "case": "first-letter",
                "*": "Procedures talk",
                "canonical": "Procedures talk"
            },
            "102": {
                "id": 102,
                "case": "first-letter",
                "*": "ESE",
                "canonical": "ESE"
            },
            "103": {
                "id": 103,
                "case": "first-letter",
                "*": "ESE talk",
                "canonical": "ESE talk"
            },
            "106": {
                "id": 106,
                "case": "first-letter",
                "*": "SS",
                "canonical": "SS"
            },
            "107": {
                "id": 107,
                "case": "first-letter",
                "*": "SS talk",
                "canonical": "SS talk"
            },
            "108": {
                "id": 108,
                "case": "first-letter",
                "*": "LD",
                "canonical": "LD"
            },
            "109": {
                "id": 109,
                "case": "first-letter",
                "*": "LD talk",
                "canonical": "LD talk"
            },
            "110": {
                "id": 110,
                "case": "first-letter",
                "*": "IMT",
                "canonical": "IMT"
            },
            "111": {
                "id": 111,
                "case": "first-letter",
                "*": "IMT talk",
                "canonical": "IMT talk"
            },
            "112": {
                "id": 112,
                "case": "first-letter",
                "*": "AUDIT",
                "canonical": "AUDIT"
            },
            "113": {
                "id": 113,
                "case": "first-letter",
                "*": "AUDIT talk",
                "canonical": "AUDIT talk"
            },
            "114": {
                "id": 114,
                "case": "first-letter",
                "*": "EBARM",
                "canonical": "EBARM"
            },
            "115": {
                "id": 115,
                "case": "first-letter",
                "*": "EBARM talk",
                "canonical": "EBARM talk"
            },
            "116": {
                "id": 116,
                "case": "first-letter",
                "*": "CTE",
                "canonical": "CTE"
            },
            "117": {
                "id": 117,
                "case": "first-letter",
                "*": "CTE talk",
                "canonical": "CTE talk"
            },
            "118": {
                "id": 118,
                "case": "first-letter",
                "*": "FNS",
                "canonical": "FNS"
            },
            "119": {
                "id": 119,
                "case": "first-letter",
                "*": "FNS talk",
                "canonical": "FNS talk"
            },
            "120": {
                "id": 120,
                "case": "first-letter",
                "*": "COMM",
                "canonical": "COMM"
            },
            "121": {
                "id": 121,
                "case": "first-letter",
                "*": "COMM talk",
                "canonical": "COMM talk"
            },
            "122": {
                "id": 122,
                "case": "first-letter",
                "*": "HR",
                "canonical": "HR"
            },
            "123": {
                "id": 123,
                "case": "first-letter",
                "*": "HR talk",
                "canonical": "HR talk"
            },
            "126": {
                "id": 126,
                "case": "first-letter",
                "*": "RANDE",
                "canonical": "RANDE"
            },
            "127": {
                "id": 127,
                "case": "first-letter",
                "*": "RANDE talk",
                "canonical": "RANDE talk"
            },
            "128": {
                "id": 128,
                "case": "first-letter",
                "*": "ECP",
                "canonical": "ECP"
            },
            "129": {
                "id": 129,
                "case": "first-letter",
                "*": "ECP talk",
                "canonical": "ECP talk"
            },
            "130": {
                "id": 130,
                "case": "first-letter",
                "*": "SSPS",
                "canonical": "SSPS"
            },
            "131": {
                "id": 131,
                "case": "first-letter",
                "*": "SSPS talk",
                "canonical": "SSPS talk"
            },
            "132": {
                "id": 132,
                "case": "first-letter",
                "*": "TRANSPORTATION",
                "canonical": "TRANSPORTATION"
            },
            "133": {
                "id": 133,
                "case": "first-letter",
                "*": "TRANSPORTATION talk",
                "canonical": "TRANSPORTATION talk"
            },
            "134": {
                "id": 134,
                "case": "first-letter",
                "*": "ER",
                "canonical": "ER"
            }
        }
    }
}