# Solana Fees

All trades on **Aliens** are executed directly on the **Solana blockchain**, which means every transaction includes a small network fee paid to validators.

To give traders maximum control, Aliens lets you customize your **gas settings** such as slippage, bribes, priority fees, and MEV protection directly from the **Trade Settings** panel. 

Within **Trade Settings**, you can adjust your parameters for both **buy** and **sell** transactions.

Presets allow you to save up to three configurations, so you can switch instantly between different trading styles or market conditions.

#### Slippage Limit

Protect against unexpected price movement. Slippage represents the difference between your intended trade price and the actual execution price. By setting a slippage limit, you control how far the price can move before the transaction cancels.

* **Auto Mode:** Set to a default of 20%
* **Manual Mode:** Input your own limit

<figure><img src="/files/zuNE1selstf2GgswAAPU" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/VmnABv50bWXi0iDIt4gU" alt=""><figcaption></figcaption></figure>

<p align="center"><em>Adjust your settings here</em></p>

{% hint style="info" %}
**Tips:**

* Increase slippage for volatile or low-liquidity tokens to reduce failed transactions.
* If you aren’t using MEV protection, consider keeping slippage low to prevent sandwiching.
  {% endhint %}

#### Priority Fee

Speed up confirmations during network congestion. The **Priority Fee** is an optional payment to validators that helps push your transaction through faster — particularly useful when the Solana network is busy or token activity is high.

* **Default:** 0.001 SOL
* **Adjustable:** Increase slightly when network traffic is heavy.

#### Bribe

Incentivize faster validation. A **Bribe** is an additional validator incentive that can help prioritize your transaction. It’s especially helpful for time-sensitive or high-volume trades.

* **Default:** 0.001 SOL
* **Optional:** Adjust depending on market activity and desired speed.

For large trades, combining a small bribe with a priority fee can greatly increase reliability.

#### Auto Fee

Let Aliens optimize gas settings for you. When you enable **Auto Fee,** Aliens automatically calculates the **optimal bribe and priority fee** based on live Solana network conditions.

* Simply tick the box to enable **Auto Fee.**
* Enter your **Max Fee** (the total amount you’re willing to spend on transaction costs)
* Aliens dynamically adjusts your **priority fee and bribe** to deliver the fastest, most cost-efficient execution possible

#### MEV Mode

Protect your trades from front-running bots. **MEV (Maximal Extractable Value)** occurs when validators reorder transactions for profit, potentially worsening your trade price. Aliens offers three protection levels so you can choose your ideal balance of speed and safety:

<table><thead><tr><th width="108.88543701171875">Mode</th><th width="376.462646484375">Description</th><th>Best for</th></tr></thead><tbody><tr><td><strong>Off</strong></td><td>No MEV protection. Fastest execution, but exposed to front-running risk.</td><td>Low-volume or test trades.</td></tr><tr><td><strong>Reduced</strong></td><td>Routes through <strong>Jito</strong> for improved security while maintaining speed. Some residual risk remains.</td><td>General trading use.</td></tr><tr><td><strong>Secure</strong></td><td>Waits for verified validators, providing maximum protection against MEV. May slightly delay execution.</td><td>High-value trades or volatile markets.</td></tr></tbody></table>

Aliens recommends using **Secure mode** for important transactions.


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