Script which downloads all mixamo animations for one character.

Mixamo.js

// Mixamo Animation downloadeer
//
// Author: Antonio Aloisio <gnuton@gnuton.org>
// Contributions: kriNon
//
// The following script make use of mixamo2 API to download all anims for a single character that you choose.
// The animations are saved with descriptive long names instead of the short ones used by default by mixamo UI.
//
//  This script has been written by gnuton@gnuton.org and the author is not responsible of its usage
//
//  How to use this script
//  1. Browse mixamo.com
//  2. Log in
//  3. Open JS console (F12 on chrome)
//  4. Download an animation and get the character ID from the Network tab
//  5. Then past the character id in the "character" variable at beginning of this script
//  6. Copy and paste the full script in the mixamo.com javascript console
//  7. The script will open a new blank page.. you  will start to see animations downloading
//  8. keep the blank page opened and keep on pressing "Allow multiple downlaods" 

// NOTE. This doesn't really work for me, but it was supposed too
// Chrome will ask you all the time to allow multiple downloads
// You can disable this as follow:
// chrome://settings/ > Advanced > Content > Automatic downloads > uncheck "Do not allow any site to download multiple file automatically"

// CHANGE THIS VAR TO DOWNLOAD ANIMATIONS FOR A DIFFERENT CHARACTER
// const character = 'aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee'
const character = 'ef7eb018-7cf3-4ae1-99ac-bab1c2c5d419'


//=================================================================================================


const bearer = localStorage.access_token
var oldAnimId = ""

const getAnimationList = (page) => {
    console.log('getAnimationList page=', page);
    const init = {
        method: 'GET',
        headers: {
            'Accept': 'application/json',
            'Content-Type': 'application/json',
            'Authorization': `Bearer ${bearer}`,
            'X-Api-Key': 'mixamo2'
        }
    };

    const listUrl = `https://www.mixamo.com/api/v1/products?page=${page}&limit=96&order=&type=Motion%2CMotionPack&query=`;
    return fetch(listUrl, init).then((res) => res.json()).then((json) => json).catch(() => Promise.reject('Failed to download animation list'))
}

// retrieves json.details.gms_hash 
const getProduct = (animId, character) => {
    console.log('getProduct animId=', animId, ' character=', character);
    const init = {
        method: 'GET',
        headers: {
            'Accept': 'application/json',
            'Content-Type': 'application/json',
            'Authorization': `Bearer ${bearer}`,
            'X-Api-Key': 'mixamo2'
        }
    };

    const productUrl = `https://www.mixamo.com/api/v1/products/${animId}?similar=0&character_id=${character}`;
    return fetch(productUrl, init).then((res) => res.json()).then((json) => json).catch(() => Promise.reject('Failed to download product details'))
}

const downloadAnimation = (animId, character, product_name) => {
    console.log('downloadAnimation animId=', animId, ' character=', character, ' prod name=', product_name);
    // skip packs
    if (product_name.indexOf(',') > -1) {
        console.log('Skipping pack ', product_name);
        return Promise.resolve('Skip pack!');
    } else {
        return getProduct(animId, character)
                .then((json) => json.details.gms_hash)
                .then((gms_hash) => {
                    const pvals = gms_hash.params.map((param) => param[1]).join(',')
                    const _gms_hash = Object.assign({}, gms_hash, { params: pvals }) // Anim is baked with default param values
                    return exportAnimation(character, [_gms_hash], product_name)
                })
                .then((json) => monitorAnimation(character,animId))
                .catch(() => Promise.reject("Unable to download animation " + animId))
    }
}

const downloadAnimLoop = (o) => {
    console.log('downloadAnimLoop');
    if (!o.anims.length) {
        return downloadAnimsInPage(o.currentPage + 1, o.totPages, o.character); // no anims left, get a new page
    }

    const head = o.anims[0];
    const tail = o.anims.slice(1);
    o.anims = tail;

    return downloadAnimation(head.id, o.character, head.name)
        .then(() => downloadAnimLoop(o)) //loop
        .catch(() => {
            console.log("Recovering from animation failed to downlaod");
            return downloadAnimLoop(o) // keep on looping 
        })
}

var downloadAnimsInPage = (page, totPages, character) => {
    console.log('downloadAnimsInPage page=', page, ' totPages', totPages, ' character=', character);
    if (page >= totPages) {
        console.log('All pages have been downloaded');
        return Promise.resolve('All pages have been downlaoded');
    }

    return getAnimationList(page)
        .then((json) => (
            {
                anims: json.results,
                currentPage: json.pagination.page,
                totPages: json.pagination.num_pages,
                character
            }))
        .then((o) => downloadAnimLoop(o))
        .catch((e) => Promise.reject("Unable to download all animations error ", e))
}

const start = () => {
    console.log('start');
    if (!character) {
        console.error("Please add a valid character ID at the beginnig of the script");
        return
    }
    downloadAnimsInPage(1, 100, character);
}

const exportAnimation = (character_id, gmsHashArray, product_name) => {
    console.log('Exporting Anim´:' + character_id + " to file:" + product_name)
    const exportUrl = 'https://www.mixamo.com/api/v1/animations/export'
    const exportBody = {
        character_id,
        gms_hash: gmsHashArray, //[{ "model-id": 103120902, "mirror": false, "trim": [0, 100], "overdrive": 0, "params": "0,0,0", "arm-space": 0, "inplace": false }],
        preferences: { format: "fbx7", skin: "false", fps: "30", reducekf: "0" }, // To download collada use format: "dae_mixamo"
        product_name,
        type: "Motion"
    };
    const exportInit = {
        method: 'POST',
        headers: {
            'Accept': 'application/json',
            'Content-Type': 'application/json',
            'Authorization': `Bearer ${bearer}`,
            'X-Api-Key': 'mixamo2',
            'X-Requested-With': 'XMLHttpRequest'
        },
        body: JSON.stringify(exportBody)
    }
	return fetch(exportUrl, exportInit)
			.then((res) => {
				switch (res.status) {
					case 429:{
						console.log('ERROR 429, Too many requests, looping');
						sleep(500)
						return exportAnimation(character_id, gmsHashArray, product_name);
					} break;
					default:
						res.json().then((json) => json)
				}
			})
}

function sleep(milliseconds) {
  const date = Date.now();
  let currentDate = null;
  do {
    currentDate = Date.now();
  } while (currentDate - date < milliseconds);
}

const monitorAnimation = (characterId,animId) => {
	if (true)
	{
		const monitorUrl = `https://www.mixamo.com/api/v1/characters/${characterId}/monitor`;
		const monitorInit = {
			method: 'GET',
			headers: {
				'Accept': 'application/json',
				'Content-Type': 'application/json',
				'Authorization': `Bearer ${bearer}`,
				'X-Api-Key': 'mixamo2'
			}
		};
		
		return fetch(monitorUrl, monitorInit)
			.then((res) => {
				switch (res.status) {
					case 404: {
						const errorMsg = ('ERROR: Monitor got 404 error: ' + res.error + ' message=' + res.message);
						console.error(errorMsg);
						throw new Error(errorMsg);
					} break
					case 429:{
						console.log('ERROR 429, Too many requests, looping');
						sleep(500)
						return monitorAnimation(characterId,animId);
					} break;
					case 202:
					case 200: {
						return res.json()
					} break
					default:
						throw new Error('Response not handled', res);
				}
			}).then((msg) => {
				switch (msg.status) {
					case 'completed':
						if (oldAnimId != msg.job_result)
						{
							oldAnimId = msg.job_result
							console.log('Downloading: ', msg.job_result);
							downloadingTab.location.href = msg.job_result;
							return msg.job_result;
						}
						break;
					case 'processing':
						console.log('Animation is processing... looping');
						return monitorAnimation(characterId,animId);
						break;// loop
					case 'failed':
					default:
						const errorMsg = ('ERROR: Monitor status:' + msg.status + ' message:' + msg.message + 'result:' + JSON.stringify(msg.job_result));
						console.error(errorMsg);
						throw new Error(errorMsg);
				}
			}).catch((e) => Promise.reject("Unable to monitor job for character " + characterId + e))
	}
}

// Workaround for downloading files from a promise
// NOTE that chrome will detect you are downloading multiple files in a single TAB. Please allow it!
const downloadingTab = window.open('', '_blank');

start()