inject.js

(function(afterEl, descriptionUrl){
    var fn = function() {
        console.log('ready')
        var html = '<a href="#" class="oic-button" data-mode="url" data-source="swagger" data-url="' + descriptionUrl + '"><img src="https://console.rest/github.io/assets/buttons/run_with_blue.svg" style="border: none;" /></a>'
        var containerTag = document.createElement('div')
        containerTag.innerHTML = html
        afterEl.parentNode.insertBefore(containerTag, afterEl.nextSibling)
        ConsoleRest.bindModalToButtons()
    }

    var scriptTag = document.createElement('script')
    scriptTag.src = 'https://console.rest/github.io/libs/console-rest.js'
    scriptTag.onload = function() {
        console.log('loaded script')
        ConsoleRest.ready.then(fn)
        loadVisuals()
    }
    document.body.appendChild(scriptTag)
})(
    document.getElementById('api-endpoints'),
    'https://api.apis.guru/v2/specs/instagram.com/1.0.0/swagger.json'
)