Connect Lighter
Link your Lighter account to Prow. Your first deposit opens the account, then one wallet signature adds a trading key that can never withdraw.
Connecting gives Prow a trading key for your Lighter account. The key is made on this device and stays here. It can never withdraw or transfer funds. With it you trade Lighter perpetuals from Prow: market, limit, stop and TP/SL orders, leverage and isolated margin.
Lighter is not available in some regions (Lighter's terms), including the US, Canada, the UK and China. There, Prow does not offer Lighter to connect.
Connect step by step
Open Connect Lighter
New users see it on Where do you trade?. Later, open Connect a venue on Portfolio (the Connect Lighter link under By venue, or step 1 of Get started). Settings > Venues has the same Connect button.
Pick your wallet
Signed in with a wallet? Its card says Found on Lighter or No Lighter account: tap Continue with this wallet. Otherwise Prow asks Which wallet do you use on Lighter?: pick a linked wallet (your own or the Prow wallet), or Another wallet.
Open your Lighter account (new users)
No Lighter account? Tap Deposit to open the account: your first deposit opens it. See below.
Sign the key registration
Your wallet shows a message that starts with Register Lighter Account. Check that the account index matches what Prow shows under What you're signing, then sign. No network fee is paid.
Approve Prow (optional)
When offered, sign Approve Integrator for Prow. On a Standard Lighter account the fee cap is 0%: it only marks orders placed through Prow.
Done
You see Lighter connected with your wallet, the Lighter account index and the API key slot.
What the key can do
| Lighter trading key | |
|---|---|
| Place, edit and cancel orders, TP/SL, change leverage and isolated margin | Yes |
| Read your open orders, fills and funding (a read-only pass that lasts 1 hour, renewed by the key) | Yes |
| Withdraw or transfer | No, never |
| Expires | No, revoke it any time |
Prow puts the key in a free API key slot from 4 to 254. Slots 0 to 3 stay free for Lighter's own apps and your tools.
Trading on Lighter
- Your balance and positions show on Portfolio even on a device without the key (Lighter shows them by account). Orders, fills and funding need the key on this device.
- Market orders go out as a limit at your worst price (your slippage). Lighter cancels what can't fill within it.
- TP/SL go with the order as one group and follow the size that fills. See TP/SL.
- Every order carries a Prow order number so Prow can tell its own orders apart. On a Standard account Lighter charges no trading fees and Prow adds none.
- Spot pairs on Lighter are view only in Prow. Deposits and withdrawals happen on Lighter.
First deposit
Lighter opens your account with your first deposit, at least $5. The Open your Lighter account step shows two ways side by side:
- Send to your deposit address. Your own deposit address from Lighter, with a QR code. Pick the network: EVM chains (USDC, USDT, ETH and more), Solana, Tron or Bitcoin when Lighter offers them. Send from an exchange or any wallet.
- From your wallet. Prow reads what your wallet holds on each chain and ticks the balances worth sending (Hide balances under $5 is on by default). Tap Send: your wallet asks to switch network once per chain, then to confirm each transfer. Lighter credits everything as USDC.
Keep the window open. Prow checks Lighter every few seconds and continues on its own once the account exists.
Revoke the key
Open Settings > Venues, tap Details on the Lighter card, then Disconnect Lighter at the bottom of the page. Your wallet signs one message that empties Prow's key slot on Lighter. Positions and balances stay on Lighter.
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