DuoFarmer is a tool that helps you farm XP, farm Streak, farm Gems or even repair frozen streak on Duolingo!.
// ==UserScript==
// @name DuoFarmer
// @namespace https://duo-farmer.vercel.app
// @version 1.3.4
// @author Lamduck
// @description DuoFarmer is a tool that helps you farm XP, farm Streak, farm Gems or even repair frozen streak on Duolingo!.
// @license none
// @icon https://www.google.com/s2/favicons?sz=64&domain=duolingo.com
// @match https://*.duolingo.com/*
// @grant GM_log
// ==/UserScript==
(function () {
'use strict';
const templateRaw = '<div id="overlay"></div>\n<div id="container">\n <div id="header">\n <span class="label">Duofarmer minimal UI</span>\n </div>\n <div id="body">\n <table id="table-main" class="table">\n <thead>\n <tr>\n <th>Username</th>\n <th>From</th>\n <th>Learning</th>\n </tr>\n </thead>\n <tbody>\n <tr>\n <td id="username">duofarmer</td>\n <td id="from">any</td>\n <td id="learn">any</td>\n </tr>\n </tbody>\n </table>\n <table id="table-progress" class="table">\n <thead>\n <tr>\n <th>Streak</th>\n <th>Gem</th>\n <th>XP</th>\n </tr>\n </thead>\n <tbody>\n <tr>\n <td id="streak">0</td>\n <td id="gem">0</td>\n <td id="xp">0</td>\n </tr>\n </tbody>\n </table>\n <div id="action-row">\n <select id="select-option">\n <!-- <option value="option1">Option 1</option> -->\n <!-- <option value="option2">Option 2</option> -->\n </select>\n <button id="start-btn">Start</button>\n <button id="stop-btn" hidden>Stop</button>\n </div>\n <div id="notify">High ban risk! Use with caution.<br /></div>\n <a id="blank-page-link" href="https://www.duolingo.com/errors/404.html"\n >Blank page (click here)</a\n >\n </div>\n <div id="footer">\n <a href="https://greasyforks.org/vi/scripts/528621-duofarmer" target="_blank"\n >Greasyfork</a\n >\n <a href="https://t.me/duofarmer" target="_blank">Telegram</a>\n <a href="https://duo-farmer.vercel.app" target="_blank">Homepage</a>\n </div>\n</div>\n<div id="floating-btn">🐸</div>\n';
const cssText = "#container{width:90vw;max-width:800px;min-height:40vh;max-height:90vh;background:#222;color:#fff;border-radius:10px;box-shadow:0 2px 12px #0008;font-family:sans-serif;display:flex;flex-direction:column;align-items:center;justify-content:center;position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);z-index:9999}#header{height:60px;background:#333;display:flex;align-items:center;justify-content:center;border-top-left-radius:10px;border-top-right-radius:10px;width:100%}#body{min-height:40vh;max-height:100%;min-width:0;background:#282828;display:flex;align-items:center;justify-content:center;width:100%;overflow-y:auto;flex:1;flex-direction:column}#footer{height:50px;background:#222;display:flex;align-items:center;justify-content:space-evenly;border-bottom-left-radius:10px;border-bottom-right-radius:10px;width:100%}.label{font-size:1em}#header .label{font-size:1.5em;font-style:italic;font-weight:700;color:#fac8ff}#body .label{font-size:1.2em}.table{width:100%;background:#232323;color:#fff;border-radius:8px;padding:8px 12px;text-align:center;table-layout:fixed}.table th,.table td{padding:9px 12px;text-align:center;border-bottom:1px solid #444;width:1%}.table tbody tr:last-child td{border-bottom:none}#body h3{margin:0;color:#fff;font-size:1.1em;font-weight:700;letter-spacing:1px}#action-row{width:90%;display:flex;justify-content:space-between;align-items:center;margin:8px 0;gap:8px}#select-option{width:90%;max-width:90%;margin-right:8px;padding:8px 12px;border-radius:6px;border:1px solid #444;background:#232323;color:#fff;font-size:1em;outline:none}#start-btn,#stop-btn{width:auto;margin-left:0;padding:8px 18px;border-radius:6px;border:none;background:#229100;color:#fff;font-size:1em;font-weight:700;cursor:pointer;box-shadow:0 2px 8px #0003}#stop-btn{background:#af0303}.disable-btn{background:#52454560!important;cursor:not-allowed!important}#notify{width:90%;max-width:90%;min-height:10vh;margin:8px 0;padding:8px 12px;border-radius:6px;background:#333;color:#c8ff00;font-size:1em;word-wrap:break-word}#blank-page-link{margin-bottom:8px;color:#fce6ff;font-weight:700;font-style:italic}#footer a,#footer span{text-decoration:none;color:#00aeff;font-size:1em;font-weight:700;font-style:italic}#overlay{position:fixed;top:0;left:0;width:100vw;height:100vh;background:#000c;z-index:9998;pointer-events:all}#floating-btn{position:fixed;bottom:10%;right:2%;width:40px;height:40px;background:#35bd00;border-radius:50%;box-shadow:0 2px 8px #0000004d;z-index:10000;cursor:pointer;display:flex;align-items:center;justify-content:center}.hidden{display:none}";
const log = (message) => {
if (typeof GM_log !== "undefined") {
GM_log(message);
} else {
console.log("[DuoFarmer]", message);
}
};
const logError = (error, context = "") => {
const message = (error == null ? void 0 : error.message) || (error == null ? void 0 : error.toString()) || "Unknown error";
const fullMessage = context ? `[${context}] ${message}` : message;
log(fullMessage);
};
const delay = (ms) => {
return new Promise((resolve) => setTimeout(resolve, ms));
};
const toTimestamp = (dateStr) => {
return Math.floor(new Date(dateStr).getTime() / 1e3);
};
const getCurrentUnixTimestamp = () => {
return Math.floor(Date.now() / 1e3);
};
const getJwtToken = () => {
const cookies = document.cookie.split(";");
for (let i = 0; i < cookies.length; i++) {
const cookie = cookies[i].trim();
if (cookie.startsWith("jwt_token=")) {
return cookie.substring("jwt_token=".length);
}
}
return null;
};
const decodeJwtToken = (token) => {
const base64Url = token.split(".")[1];
const base64 = base64Url.replace(/-/g, "+").replace(/_/g, "/");
const jsonPayload = decodeURIComponent(
atob(base64).split("").map(function(c) {
return "%" + ("00" + c.charCodeAt(0).toString(16)).slice(-2);
}).join("")
);
return JSON.parse(jsonPayload);
};
const formatHeaders = (jwtToken) => {
return {
"Content-Type": "application/json",
Authorization: `Bearer ${jwtToken}`,
"User-Agent": navigator.userAgent
};
};
class ApiService {
constructor(jwt2, defaultHeaders2, userInfo2, sub2) {
this.jwt = jwt2;
this.defaultHeaders = defaultHeaders2;
this.userInfo = userInfo2;
this.sub = sub2;
}
static async getUserInfo(userSub, headers) {
const userInfoUrl = `https://www.duolingo.com/2017-06-30/users/${userSub}?fields=id,username,fromLanguage,learningLanguage,streak,totalXp,level,numFollowers,numFollowing,gems,creationDate,streakData`;
const response = await fetch(userInfoUrl, { method: "GET", headers });
return await response.json();
}
async sendRequest({ url, payload, headers, method = "PUT" }) {
try {
const res = await fetch(url, {
method,
headers,
body: payload ? JSON.stringify(payload) : void 0
});
return res;
} catch (error) {
return error;
}
}
async farmGemOnce() {
const idReward = "SKILL_COMPLETION_BALANCED-dd2495f4_d44e_3fc3_8ac8_94e2191506f0-2-GEMS";
const patchUrl = `https://www.duolingo.com/2017-06-30/users/${this.sub}/rewards/${idReward}`;
const patchData = {
consumed: true,
learningLanguage: this.userInfo.learningLanguage,
fromLanguage: this.userInfo.fromLanguage
};
return await this.sendRequest({ url: patchUrl, payload: patchData, headers: this.defaultHeaders, method: "PATCH" });
}
async farmStoryOnce(config = {}) {
const startTime = getCurrentUnixTimestamp();
const fromLanguage = this.userInfo.fromLanguage;
const completeUrl = `https://stories.duolingo.com/api2/stories/en-${fromLanguage}-the-passport/complete`;
const payload = {
awardXp: true,
isFeaturedStoryInPracticeHub: false,
completedBonusChallenge: true,
mode: "READ",
isV2Redo: false,
isV2Story: false,
isLegendaryMode: true,
masterVersion: false,
maxScore: 0,
numHintsUsed: 0,
score: 0,
startTime,
fromLanguage,
learningLanguage: "en",
hasXpBoost: false,
// happyHourBonusXp: 449,
...config
};
return await this.sendRequest({ url: completeUrl, payload, headers: this.defaultHeaders, method: "POST" });
}
async farmSessionOnce(config = {}) {
const startTime = config.startTime || getCurrentUnixTimestamp();
const endTime = config.endTime || startTime + 60;
const sessionPayload = {
challengeTypes: [
"assist",
"characterIntro",
"characterMatch",
"characterPuzzle",
"characterSelect",
"characterTrace",
"characterWrite",
"completeReverseTranslation",
"definition",
"dialogue",
"extendedMatch",
"extendedListenMatch",
"form",
"freeResponse",
"gapFill",
"judge",
"listen",
"listenComplete",
"listenMatch",
"match",
"name",
"listenComprehension",
"listenIsolation",
"listenSpeak",
"listenTap",
"orderTapComplete",
"partialListen",
"partialReverseTranslate",
"patternTapComplete",
"radioBinary",
"radioImageSelect",
"radioListenMatch",
"radioListenRecognize",
"radioSelect",
"readComprehension",
"reverseAssist",
"sameDifferent",
"select",
"selectPronunciation",
"selectTranscription",
"svgPuzzle",
"syllableTap",
"syllableListenTap",
"speak",
"tapCloze",
"tapClozeTable",
"tapComplete",
"tapCompleteTable",
"tapDescribe",
"translate",
"transliterate",
"transliterationAssist",
"typeCloze",
"typeClozeTable",
"typeComplete",
"typeCompleteTable",
"writeComprehension"
],
fromLanguage: this.userInfo.fromLanguage,
isFinalLevel: false,
isV2: true,
juicy: true,
learningLanguage: this.userInfo.learningLanguage,
smartTipsVersion: 2,
type: "GLOBAL_PRACTICE"
};
const sessionRes = await this.sendRequest({ url: "https://www.duolingo.com/2017-06-30/sessions", payload: sessionPayload, headers: this.defaultHeaders, method: "POST" });
const sessionData = await sessionRes.json();
const updateSessionPayload = {
...sessionData,
heartsLeft: 0,
startTime,
enableBonusPoints: false,
endTime,
failed: false,
maxInLessonStreak: 9,
shouldLearnThings: true,
...config
};
const updateRes = await this.sendRequest({ url: `https://www.duolingo.com/2017-06-30/sessions/${sessionData.id}`, payload: updateSessionPayload, headers: this.defaultHeaders, method: "PUT" });
return updateRes;
}
}
const DELAY = 500;
const ERROR_DELAY = 1e3;
let jwt, defaultHeaders, userInfo, sub, apiService;
let isRunning = false;
let shadowRoot = null;
const OPTIONS = [
{ type: "separator", label: "═══════ GEM FARMING ═══════", value: "", disabled: true },
{ type: "gem", label: "Gem 30", value: "fixed", amount: 30 },
{ type: "separator", label: "═══════ XP SESSION FARMING ═══════", value: "", disabled: true },
{ type: "separator", label: "(slow but safe)", value: "", disabled: true },
{ type: "xp", label: "XP 10", value: "session", amount: 10, config: {} },
{ type: "xp", label: "XP 13", value: "session", amount: 13, config: { enableBonusPoints: true } },
{ type: "xp", label: "XP 20", value: "session", amount: 20, config: { hasBoost: true } },
{ type: "xp", label: "XP 26", value: "session", amount: 26, config: { enableBonusPoints: true, hasBoost: true } },
{ type: "xp", label: "XP 36", value: "session", amount: 36, config: { enableBonusPoints: true, hasBoost: true, happyHourBonusXp: 10 } },
{ type: "separator", label: "═══════ XP STORY FARMING ═══════", value: "", disabled: true },
{ type: "separator", label: "(fast, not safe, English only) ", value: "", disabled: true },
{ type: "xp", label: "XP 50", value: "story", amount: 0, config: {} },
{ type: "xp", label: "XP 90 ", value: "story", amount: 0, config: { hasXpBoost: true } },
{ type: "xp", label: "XP 100 ", value: "story", amount: 100, config: { happyHourBonusXp: 50 } },
{ type: "xp", label: "XP 200 ", value: "story", amount: 200, config: { happyHourBonusXp: 150 } },
{ type: "xp", label: "XP 300 ", value: "story", amount: 300, config: { happyHourBonusXp: 250 } },
{ type: "xp", label: "XP 400 ", value: "story", amount: 400, config: { happyHourBonusXp: 350 } },
{ type: "xp", label: "XP 499 ", value: "story", amount: 499, config: { happyHourBonusXp: 449 } },
{ type: "separator", label: "═══════ STREAK FARMING ═══════", value: "", disabled: true },
{ type: "streak", label: "Streak farm (test)", value: "farm" }
];
const getElements = () => ({
startBtn: shadowRoot.getElementById("start-btn"),
stopBtn: shadowRoot.getElementById("stop-btn"),
select: shadowRoot.getElementById("select-option"),
floatingBtn: shadowRoot.getElementById("floating-btn"),
container: shadowRoot.getElementById("container"),
overlay: shadowRoot.getElementById("overlay"),
notify: shadowRoot.getElementById("notify"),
username: shadowRoot.getElementById("username"),
from: shadowRoot.getElementById("from"),
learn: shadowRoot.getElementById("learn"),
streak: shadowRoot.getElementById("streak"),
gem: shadowRoot.getElementById("gem"),
xp: shadowRoot.getElementById("xp")
});
const setRunningState = (running) => {
isRunning = running;
const { startBtn, stopBtn, select } = getElements();
if (running) {
startBtn.hidden = true;
stopBtn.hidden = false;
stopBtn.disabled = true;
stopBtn.className = "disable-btn";
select.disabled = true;
} else {
stopBtn.hidden = true;
startBtn.hidden = false;
startBtn.disabled = true;
startBtn.className = "disable-btn";
select.disabled = false;
}
setTimeout(() => {
const { startBtn: btn, stopBtn: stop } = getElements();
btn.className = "";
btn.disabled = false;
stop.className = "";
stop.disabled = false;
}, 3e3);
};
const disableAllControls = (notifyMessage = null) => {
const { startBtn, stopBtn, select } = getElements();
startBtn.disabled = true;
startBtn.className = "disable-btn";
stopBtn.disabled = true;
select.disabled = true;
if (notifyMessage) {
updateNotify(notifyMessage);
}
};
const initInterface = () => {
const container = document.createElement("div");
shadowRoot = container.attachShadow({ mode: "open" });
const style = document.createElement("style");
style.textContent = cssText;
shadowRoot.appendChild(style);
const content = document.createElement("div");
content.innerHTML = templateRaw;
shadowRoot.appendChild(content);
document.body.appendChild(container);
const requiredElements = [
"start-btn",
"stop-btn",
"select-option",
"floating-btn",
"container",
"overlay",
"notify"
];
for (const id of requiredElements) {
if (!shadowRoot.getElementById(id)) {
throw new Error(`Required UI element '${id}' not found in template. Template may be corrupted.`);
}
}
};
const setInterfaceVisible = (visible) => {
const { container, overlay } = getElements();
container.style.display = visible ? "flex" : "none";
overlay.style.display = visible ? "block" : "none";
};
const isInterfaceVisible = () => {
const { container } = getElements();
return container.style.display !== "none" && container.style.display !== "";
};
const toggleInterface = () => {
setInterfaceVisible(!isInterfaceVisible());
};
const addEventFloatingBtn = () => {
const { floatingBtn } = getElements();
floatingBtn.addEventListener("click", () => {
if (isRunning) {
if (confirm("Duofarmer is farming. Do you want to stop and hide UI?")) {
setRunningState(false);
setInterfaceVisible(false);
}
return;
}
toggleInterface();
});
};
const addEventStartBtn = () => {
const { startBtn, select } = getElements();
startBtn.addEventListener("click", async () => {
setRunningState(true);
const selected = select.options[select.selectedIndex];
const optionData = {
type: selected.getAttribute("data-type"),
amount: Number(selected.getAttribute("data-amount")),
value: selected.value,
label: selected.textContent,
config: selected.getAttribute("data-config") ? JSON.parse(selected.getAttribute("data-config")) : {}
};
await farmSelectedOption(optionData);
});
};
const addEventStopBtn = () => {
const { stopBtn } = getElements();
stopBtn.addEventListener("click", () => {
setRunningState(false);
});
};
const addEventListeners = () => {
addEventFloatingBtn();
addEventStartBtn();
addEventStopBtn();
};
const populateOptions = () => {
const select = shadowRoot.getElementById("select-option");
select.innerHTML = "";
OPTIONS.forEach((opt) => {
const option = document.createElement("option");
option.value = opt.value;
option.textContent = opt.label;
option.setAttribute("data-type", opt.type);
if (opt.amount != null) option.setAttribute("data-amount", String(opt.amount));
if (opt.config) option.setAttribute("data-config", JSON.stringify(opt.config));
if (opt.disabled) option.disabled = true;
select.appendChild(option);
});
};
const updateNotify = (message) => {
const { notify } = getElements();
const now = (/* @__PURE__ */ new Date()).toLocaleTimeString();
notify.innerText = `[${now}] ` + message;
log(`[${now}] ${message}`);
};
const updateUserInfo = () => {
const { username, from, learn, streak, gem, xp } = getElements();
if (userInfo) {
username.innerText = userInfo.username;
from.innerText = userInfo.fromLanguage;
learn.innerText = userInfo.learningLanguage;
streak.innerText = userInfo.streak;
gem.innerText = userInfo.gems;
xp.innerText = userInfo.totalXp;
}
};
const updateFarmResult = (type, farmedAmount) => {
switch (type) {
case "gem":
userInfo = { ...userInfo, gems: userInfo.gems + farmedAmount };
updateNotify(`You got ${farmedAmount} gem!!!`);
break;
case "xp":
userInfo = { ...userInfo, totalXp: userInfo.totalXp + farmedAmount };
updateNotify(`You got ${farmedAmount} XP!!!`);
break;
case "streak":
userInfo = { ...userInfo, streak: userInfo.streak + farmedAmount };
updateNotify(`You got ${farmedAmount} streak! (maybe some xp too, idk)`);
break;
}
updateUserInfo();
};
const gemFarmingLoop = async () => {
const gemFarmed = 30;
while (isRunning) {
try {
await apiService.farmGemOnce(userInfo);
updateFarmResult("gem", gemFarmed);
await delay(DELAY);
} catch (error) {
updateNotify(`Error ${error.status}! Please record screen and report in telegram group!`);
await delay(ERROR_DELAY);
}
}
};
const xpFarmingLoop = async (value, amount, config = {}) => {
while (isRunning) {
try {
let response;
if (value === "session") {
response = await apiService.farmSessionOnce(config);
} else if (value === "story") {
response = await apiService.farmStoryOnce(config);
}
if (response.status > 400) {
updateNotify(`Something went wrong! Pls try other farming methods.
If you are using story method, make sure you are on English course (learning language == en)!`);
await delay(ERROR_DELAY);
continue;
}
const responseData = await response.json();
const xpFarmed = (responseData == null ? void 0 : responseData.awardedXp) || (responseData == null ? void 0 : responseData.xpGain) || 0;
updateFarmResult("xp", xpFarmed);
await delay(DELAY);
} catch (error) {
updateNotify(`Error ${error.status}! Please record screen and report in telegram group!`);
await delay(ERROR_DELAY);
}
}
};
const streakFarmingLoop = async () => {
const hasStreak = !!userInfo.streakData.currentStreak;
const startStreakDate = hasStreak ? userInfo.streakData.currentStreak.startDate : /* @__PURE__ */ new Date();
const startFarmStreakTimestamp = toTimestamp(startStreakDate);
let currentTimestamp = hasStreak ? startFarmStreakTimestamp - 86400 : startFarmStreakTimestamp;
while (isRunning) {
try {
const sessionRes = await apiService.farmSessionOnce({ startTime: currentTimestamp, endTime: currentTimestamp + 60 });
if (sessionRes) {
currentTimestamp -= 86400;
updateFarmResult("streak", 1);
await delay(DELAY);
} else {
updateNotify("Failed to farm streak session, I'm trying again...");
await delay(ERROR_DELAY);
continue;
}
} catch (error) {
updateNotify(`Error in farmStreak: ${(error == null ? void 0 : error.message) || error}`);
await delay(ERROR_DELAY);
continue;
}
}
};
const farmSelectedOption = async (option) => {
const { type, value, amount, config } = option;
switch (type) {
case "gem":
gemFarmingLoop();
break;
case "xp":
xpFarmingLoop(value, amount, config);
break;
case "streak":
streakFarmingLoop();
break;
}
};
const initVariables = async () => {
jwt = getJwtToken();
if (!jwt) {
disableAllControls("Please login to Duolingo and reload!");
return;
}
defaultHeaders = formatHeaders(jwt);
const decodedJwt = decodeJwtToken(jwt);
sub = decodedJwt.sub;
userInfo = await ApiService.getUserInfo(sub, defaultHeaders);
apiService = new ApiService(jwt, defaultHeaders, userInfo, sub);
populateOptions();
};
(async () => {
try {
initInterface();
setInterfaceVisible(false);
addEventListeners();
await initVariables();
updateUserInfo();
} catch (err) {
logError(err, "init main.js");
}
})();
})();