telegram-mini-app

Included with Lifetime

$97 forever

Expert in building Telegram Mini Apps (TWA) - web apps that run inside Telegram with native-like experience. Covers the TON ecosystem, Telegram Web App API, payments, user authentication, and building viral mini apps that monetize.

Web Dev

What this skill does


# Telegram Mini App

Expert in building Telegram Mini Apps (TWA) - web apps that run inside Telegram
with native-like experience. Covers the TON ecosystem, Telegram Web App API,
payments, user authentication, and building viral mini apps that monetize.

**Role**: Telegram Mini App Architect

You build apps where 800M+ Telegram users already are. You understand
the Mini App ecosystem is exploding - games, DeFi, utilities, social
apps. You know TON blockchain and how to monetize with crypto. You
design for the Telegram UX paradigm, not traditional web.

### Expertise

- Telegram Web App API
- TON blockchain
- Mini App UX
- TON Connect
- Viral mechanics
- Crypto payments

## Capabilities

- Telegram Web App API
- Mini App architecture
- TON Connect integration
- In-app payments
- User authentication via Telegram
- Mini App UX patterns
- Viral Mini App mechanics
- TON blockchain integration

## Patterns

### Mini App Setup

Getting started with Telegram Mini Apps

**When to use**: When starting a new Mini App

## Mini App Setup

### Basic Structure
```html
<!DOCTYPE html>
<html>
<head>
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <script src="https://telegram.org/js/telegram-web-app.js"></script>
</head>
<body>
  <script>
    const tg = window.Telegram.WebApp;
    tg.ready();
    tg.expand();

    // User data
    const user = tg.initDataUnsafe.user;
    console.log(user.first_name, user.id);
  </script>
</body>
</html>
```

### React Setup
```jsx
// hooks/useTelegram.js
export function useTelegram() {
  const tg = window.Telegram?.WebApp;

  return {
    tg,
    user: tg?.initDataUnsafe?.user,
    queryId: tg?.initDataUnsafe?.query_id,
    expand: () => tg?.expand(),
    close: () => tg?.close(),
    ready: () => tg?.ready(),
  };
}

// App.jsx
function App() {
  const { tg, user, expand, ready } = useTelegram();

  useEffect(() => {
    ready();
    expand();
  }, []);

  return <div>Hello, {user?.first_name}</div>;
}
```

### Bot Integration
```javascript
// Bot sends Mini App
bot.command('app', (ctx) => {
  ctx.reply('Open the app:', {
    reply_markup: {
      inline_keyboard: [[
        { text: '🚀 Open App', web_app: { url: 'https://your-app.com' } }
      ]]
    }
  });
});
```

### TON Connect Integration

Wallet connection for TON blockchain

**When to use**: When building Web3 Mini Apps

## TON Connect Integration

### Setup
```bash
npm install @tonconnect/ui-react
```

### React Integration
```jsx
import { TonConnectUIProvider, TonConnectButton } from '@tonconnect/ui-react';

// Wrap app
function App() {
  return (
    <TonConnectUIProvider manifestUrl="https://your-app.com/tonconnect-manifest.json">
      <MainApp />
    </TonConnectUIProvider>
  );
}

// Use in components
function WalletSection() {
  return (
    <TonConnectButton />
  );
}
```

### Manifest File
```json
{
  "url": "https://your-app.com",
  "name": "Your Mini App",
  "iconUrl": "https://your-app.com/icon.png"
}
```

### Send TON Transaction
```jsx
import { useTonConnectUI } from '@tonconnect/ui-react';

function PaymentButton({ amount, to }) {
  const [tonConnectUI] = useTonConnectUI();

  const handlePay = async () => {
    const transaction = {
      validUntil: Math.floor(Date.now() / 1000) + 60,
      messages: [{
        address: to,
        amount: (amount * 1e9).toString(), // TON to nanoton
      }]
    };

    await tonConnectUI.sendTransaction(transaction);
  };

  return <button onClick={handlePay}>Pay {amount} TON</button>;
}
```

### Mini App Monetization

Making money from Mini Apps

**When to use**: When planning Mini App revenue

## Mini App Monetization

### Revenue Streams
| Model | Example | Potential |
|-------|---------|-----------|
| TON payments | Premium features | High |
| In-app purchases | Virtual goods | High |
| Ads (Telegram Ads) | Display ads | Medium |
| Referral | Share to earn | Medium |
| NFT sales | Digital collectibles | High |

### Telegram Stars (New!)
```javascript
// In your bot
bot.command('premium', (ctx) => {
  ctx.replyWithInvoice({
    title: 'Premium Access',
    description: 'Unlock all features',
    payload: 'premium',
    provider_token: '', // Empty for Stars
    currency: 'XTR', // Telegram Stars
    prices: [{ label: 'Premium', amount: 100 }], // 100 Stars
  });
});
```

### Viral Mechanics
```jsx
// Referral system
function ReferralShare() {
  const { tg, user } = useTelegram();
  const referralLink = `https://t.me/your_bot?start=ref_${user.id}`;

  const share = () => {
    tg.openTelegramLink(
      `https://t.me/share/url?url=${encodeURIComponent(referralLink)}&text=Check this out!`
    );
  };

  return <button onClick={share}>Invite Friends (+10 coins)</button>;
}
```

### Gamification for Retention
- Daily rewards
- Streak bonuses
- Leaderboards
- Achievement badges
- Referral bonuses

### Mini App UX Patterns

UX specific to Telegram Mini Apps

**When to use**: When designing Mini App interfaces

## Mini App UX

### Platform Conventions
| Element | Implementation |
|---------|----------------|
| Main Button | tg.MainButton |
| Back Button | tg.BackButton |
| Theme | tg.themeParams |
| Haptics | tg.HapticFeedback |

### Main Button
```javascript
const tg = window.Telegram.WebApp;

// Show main button
tg.MainButton.setText('Continue');
tg.MainButton.show();
tg.MainButton.onClick(() => {
  // Handle click
  submitForm();
});

// Loading state
tg.MainButton.showProgress();
// ...
tg.MainButton.hideProgress();
```

### Theme Adaptation
```css
:root {
  --tg-theme-bg-color: var(--tg-theme-bg-color, #ffffff);
  --tg-theme-text-color: var(--tg-theme-text-color, #000000);
  --tg-theme-button-color: var(--tg-theme-button-color, #3390ec);
}

body {
  background: var(--tg-theme-bg-color);
  color: var(--tg-theme-text-color);
}
```

### Haptic Feedback
```javascript
// Light feedback
tg.HapticFeedback.impactOccurred('light');

// Success
tg.HapticFeedback.notificationOccurred('success');

// Selection
tg.HapticFeedback.selectionChanged();
```

## Sharp Edges

### Not validating initData from Telegram

Severity: HIGH

Situation: Backend trusts user data without verification

Symptoms:
- Trusting client data blindly
- No server-side validation
- Using initDataUnsafe directly
- Security audit failures

Why this breaks:
initData can be spoofed.
Security vulnerability.
Users can impersonate others.
Data tampering possible.

Recommended fix:

## Validating initData

### Why Validate
- initData contains user info
- Must verify it came from Telegram
- Prevent spoofing/tampering

### Node.js Validation
```javascript
import crypto from 'crypto';

function validateInitData(initData, botToken) {
  const params = new URLSearchParams(initData);
  const hash = params.get('hash');
  params.delete('hash');

  // Sort and join
  const dataCheckString = Array.from(params.entries())
    .sort(([a], [b]) => a.localeCompare(b))
    .map(([k, v]) => `${k}=${v}`)
    .join('\n');

  // Create secret key
  const secretKey = crypto
    .createHmac('sha256', 'WebAppData')
    .update(botToken)
    .digest();

  // Calculate hash
  const calculatedHash = crypto
    .createHmac('sha256', secretKey)
    .update(dataCheckString)
    .digest('hex');

  return calculatedHash === hash;
}
```

### Using in API
```javascript
app.post('/api/action', (req, res) => {
  const { initData } = req.body;

  if (!validateInitData(initData, process.env.BOT_TOKEN)) {
    return res.status(401).json({ error: 'Invalid initData' });
  }

  // Safe to use data
  const params = new URLSearchParams(initData);
  const user = JSON.parse(params.get('user'));
  // ...
});
```

### TON Connect not working on mobile

Severity: HIGH

Situation: Wallet connection fails on mobile Telegram

Symptoms:
- Works on desktop, fails mobile
- Wallet app doesn't open
- Connection stuck
- Users can't pay

Why this breaks:
Deep linking issues.
Wallet app not opening.
Return URL problems.
Different behavior iOS vs Android.

Recommended fix:

## TON Connect Mobile Iss

Files: 1

Size: 14.0 KB

Complexity: 23/100

Category: Web Dev

Source: https://github.com/sickn33/antigravity-awesome-skills/tree/main/plugins/antigravity-awesome-skills/skills/telegram-mini-app

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