> ## Documentation Index
> Fetch the complete documentation index at: https://docs.tronrental.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Smart Mode Overview

> Automatic energy for every USDT transfer

## Smart Mode

Smart Mode automatically provides energy for every outgoing USDT transfer from a monitored address. No manual API calls needed — just activate and transfer.

### How it works

1. **Activate** Smart Mode for a TRON address
2. Every time that address sends USDT, energy is **automatically delegated**
3. Daily subscription fee + per-transfer fee deducted from your balance
4. If balance runs out, the subscription is paused (not deleted)

### Pricing

| Fee                     | Amount               |
| ----------------------- | -------------------- |
| Daily subscription      | 3.0 TRX/day          |
| Per USDT transfer       | 2.7 TRX × multiplier |
| BW Guarantee (optional) | +0.3 TRX/transfer    |

The transfer multiplier is `1` for addresses that already hold USDT (65K energy) and `2` for first-time recipients (131K energy).

<Tip>
  **BW Guarantee** (enabled by default) delegates 350 bandwidth to cover the transaction's bandwidth cost.
  Without it, the sender needs \~0.35 TRX worth of bandwidth or frozen TRX.
</Tip>

<Info>
  The prices above are defaults. Use [`GET /smart-mode/fees`](/api-reference/smart-mode/get-fees) to check your actual rates — custom pricing may apply.
</Info>

### Limits

* Maximum 5 active subscriptions per account
* Custom pricing available for high-volume users (contact support)