Lighter

Connecting to the Lighter Exchange

Prerequisites

Before connecting, make sure you have:

An installed crypto wallet (Trust Wallet, OKX Wallet, MetaMask, etc.);
Funds in the wallet for transactions.

Step 1: Connecting your wallet to the exchange

On the Lighter trading platform's main page, click the "Connect Wallet" button in the upper right corner of the screen.

Step 2. Selecting a wallet

In the window that opens, select your crypto wallet from the list of available ones:

Trust (recommended)
Coinbase (recommended)
OKX Wallet (recommended)
MetaMask (recommended)
Binance Wallet (recommended)
Rabby (recommended)

If your wallet isn't listed, click "View all wallets" to see all available options (over 600 wallets).

Step 3: Switch to API Key Management

In the top menu, click "Tools". Select "API Keys" from the drop-down menu.

Step 4. Generating an API key

On the API Key Management page, click the "Generate API Key" button.

⚠️ IMPORTANT: API keys are required for programmatic access to your account and trading operations.

Step 5: Configuring API Key Parameters

In the window that opens, specify the API Key Index—the numeric index for your key:

Indices 0 (Desktop), 1, 2, and 3 (Mobile) are reserved by the system and cannot be used;
Indices 4-254 are available for use;
You can create up to 251 keys per account;

If necessary, check the "Maker Only" box to limit the key to maker orders only.

Click the "Generate" button.

Step 6. Confirm key generation

In the window that appears, select "Generate Keys". If you need to change the public key, select "Change public key". Confirm the transaction in your wallet:

Check the network (e.g., Arbitrum One);
Make sure the correct wallet is selected;
Click the "Confirm" button.

⚠️ IMPORTANT: To confirm the transaction, you will need to sign the transaction in your wallet.

Step 7. Saving generated keys

After successful generation, you will see a window with your API keys:

API Key Index - your key index;
Public Key - your public key;
Private Key - your private key.

⚠️CRITICALLY IMPORTANT:
The Private Key is displayed ONLY ONCE!;
Be sure to copy and save your private key in a safe place;
Use the copy icons to the right of each field;
After closing this window, your private key will no longer be accessible;
If you lose your Private Key, you will have to generate a new API key.

Copy all three values: API Key Index, Public Key, and Private Key.

Click the "X" button to close the window.

Step 8. Configuring connection confirmation

Launch the Tiger.com terminal, and in the main menu, select File → Connections → Configure. In the window that opens, click the "Create New Connection" button, select Lighter from the list that appears, and follow the link at the bottom of the window:

Next, you proceed to the integrator form, where you also need to select Lighter.

Step 9. Connecting the wallet and verifying the API key

After navigating to the integrator's page, connect your wallet by clicking the "Connect wallet" button and selecting the desired wallet from the list.

After connecting your wallet, fill in the fields in the "Your Lighter API key" section:

API private key – paste the private key you received when generating the API key;
Index – enter the key index.

Click the "Verify key" button to verify the key.

Step 10. Confirmation of the integrator's commission

After successful key verification in the "Integrator approval" section, click the "Approve integrator" button and sign the transaction in your wallet.

💡 Information:
This permission allows us to charge an integrator fee;
The permission is valid for one year.

Step 11. Completing the connection in the terminal

Return to the Tiger.com terminal and fill out the connection form:

API Private Key – paste the same private key;
Wallet Address – enter the wallet address;
API Key Index – enter the same key index.

Click the "Connect to Lighter" button to complete the setup.

Step 12. Confirmation of the fee upon expiration

⚠️ IMPORTANT:
A reminder window will appear 24 hours before the permission expires, prompting you to confirm the fees.
If you do not confirm the permission by the specified date, trading will be disabled. To extend it, click the "Confirm..." button and sign the transaction in your wallet.

Step 13. Completing the connection

Click the "Connect to Lighter" button. Wait for confirmation of a successful connection.

Additional information: Making a deposit

Step A. Select a deposit method

On the trading panel, click the balance or deposit button. In the "Deposit USDC Perps" window, select the destination token, USDC. Select a deposit method: