Telegram Client API vs Bot API — When to Use Each
Telegram Client API vs Bot API
Telegram has two distinct APIs. Understanding the difference is critical for choosing the right automation tool.
Telegram Bot API
What it is: Official REST API for bot accounts
- Authentication: Bot token (no login required)
- Rate limit: 30 messages/sec globally
- Capabilities: Basic messaging, callbacks, webhooks
- Restrictions: Can't join groups automatically, can't access group history
- Use: Customer support bots, notification systems
Telegram Client API (TDLib, Telethon)
What it is: Reverse-engineered API for user accounts
- Authentication: Phone number + 2FA (mimics human user)
- Rate limit: Per-account, ~30 msg/min
- Capabilities: Full access (join, message, search, etc.)
- Restrictions: Account-specific, Telegram can ban for automation
- Use: Large-scale broadcasting, group management
Why TGAutoHub Uses Client API
| Feature | Bot API | Client API |
|---|---|---|
| Join groups auto | ❌ | ✅ |
| Broadcast to groups | ❌ (limited) | ✅ |
| Folder management | ❌ | ✅ |
| Member filtering | ❌ | ✅ |
| Scheduled messages | ✅ | ✅ |
Verdict: For enterprise broadcasting, Client API is the only choice. TGAutoHub uses it safely with session rotation, rate limiting, and zero reported bans.