> For the complete documentation index, see [llms.txt](https://docs.leap-blockchain.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.leap-blockchain.com/leap-trading-sol-bot/leap-trading-bot-setup/dev-mode-bnb.md).

# Dev Mode - BNB

**Binance Dev Mode** lets you manually drive trades on the BNB chain using your Leap task system.\
It runs a local Dev Mode socket server so you can trade using PancakeSwap or Four.meme — all while keeping your existing analytics and tracking logic active.

***

### ⚙️ Getting Started

#### Step 1 — Navigate to Dev Mode

From the Leap dashboard:\
**Tasks → Create Task → Dev Mode**

Then select your **BNB wallet**.

> 💡 If you only have Solana wallets, go to **Accounts → Add Wallet** and add a **BNB wallet** first.\
> The form will then unlock BNB-specific settings.

***

### 🧾 Task Setup Fields

Here’s what each field in the **Dev Mode** setup means:

| Field                   | Description                                                                                                                                  |
| ----------------------- | -------------------------------------------------------------------------------------------------------------------------------------------- |
| **Task Name**           | A simple label to identify your dev session. Appears in the Tasks list and on the web dashboard.                                             |
| **Wallet**              | The BNB account funding trades. Selecting a BNB wallet automatically enables **Pancake**, **Flap**, and **Four.meme** markets.               |
| **Optional BNB Wallet** | Lets you direct buys from a secondary BNB account while keeping a Solana wallet active elsewhere. Leave blank unless you need that split.    |
| **Buy Amount (BNB)**    | Default size for manual buys. You can edit this before starting or override per trade in the extension.                                      |
| **Buy Wallet %**        | Caps how much of your balance each buy can use — useful for running multiple positions simultaneously.                                       |
| **Slippage (%)**        | Protects against volatile prices. Small-cap launches often require **10–20%**. Adjust higher per token if trades fail.                       |
| **Exchange Toggles**    | Keep **Pancake**, **Flap**, and **Four.meme** on for BNB markets. Turn off **Raydium**, **Pump.fun**, and **Meteora** (they’re Solana-only). |
| **Gas Settings**        | Default: **Auto**, which fetches live gas prices. Use **Manual** if you want to define exact `gasPriceGwei` values.                          |
| **Processors**          | Optional routing layers: use **BlockRazor** (requires API key in Settings) or **Puissant** for relay + tip flow.                             |
| **BNB Gas Limit**       | Leave blank for automatic estimation. Set manually if you’ve tested your strategy and want strict control.                                   |

***

### 🧰 Example Request Payload

Here’s a sample payload you can send once your task is active:

```json
{
  "id": "manual-test",
  "token": "0x0000000000000000000000000000000000000000",
  "amount": 0.4,
  "buySlippage": 12,
  "gasPriceGwei": 1.8,
  "gasLimit": 210000,
  "deadlineSeconds": 90
}
```

***

### 🧩 How Dev Mode Works

Once you click **Create Task**, the app:

1. Spins up a **local socket server** on your machine.
2. Listens for REST or extension commands at:

   ```
   http://localhost:8080/api/extension/trade
   ```
3. Executes any `"buy"`, `"sell"`, or `"add"` actions you send.
4. Streams responses directly to your **task activity feed**.

***

### 🔁 Response Flow

You’ll see live trade feedback in your task feed:

| Status        | Description                                             |
| ------------- | ------------------------------------------------------- |
| **queued**    | Command received and pending execution                  |
| **confirmed** | Trade completed successfully; includes transaction hash |
| **failed**    | Validation or network issue (check logs)                |

***

### 🚀 Testing a Trade

After starting the task:

1. Use the **browser extension** or a REST client like Postman.
2. Send the JSON payload above to `http://localhost:8080/api/extension/trade`.
3. Watch the activity feed for `"queued"` → `"confirmed"` → `"tx hash"`.

✅ Once confirmed, your connection is working and ready for live BSC testing.

***

### 🧨 Shutting Down Dev Mode

You can stop Dev Mode anytime from the **Tasks list**.\
Closing the task automatically shuts down the local server.

> ⚠️ Keep the task running while testing trades — Dev Mode stops accepting requests once closed.