How to use the Jupiter aggregator on Phantom? (Solana DEX trading)

Connecting Phantom Wallet to Jupiter

1. Open the Phantom browser extension or mobile app and ensure your wallet is unlocked.

2. Navigate to jup.ag in your browser.

3. Click the “Connect Wallet” button located in the top-right corner of the Jupiter interface.

4. Select “Phantom” from the list of available wallets.

5. Confirm the connection request inside Phantom—this does not require signing a transaction, only granting read access to your public address.

Executing a Swap via Jupiter Interface

1. After connecting, the Jupiter interface displays two token input fields: “From” and “To”.

2. Click the “From” field and select the token you wish to trade—Solana (SOL), USDC, or any SPL token held in your Phantom wallet.

3. Enter the amount you want to swap; Jupiter instantly calculates the best route across Raydium, Orca, Serum, and other Solana DEXs.

4. Click the “To” field and choose the target token—Jupiter auto-detects balances and shows real-time quotes.

5. Review slippage tolerance, estimated output, and network fee—default slippage is set at 0.5%, adjustable via the gear icon.

6. Click “Swap” and approve the transaction in Phantom when prompted.

Understanding Jupiter’s Routing Logic

1. Jupiter aggregates liquidity from over 15 Solana-based AMMs including Raydium, Orca, Marginfi, and Kamino.

2. It decomposes large orders into multiple smaller swaps across different pools to minimize price impact.

3. Each quote includes breakdowns showing which DEX contributed how much liquidity and the corresponding fee split.

4. The aggregator uses on-chain data to detect stale prices and prioritizes routes with deeper order books and higher uptime.

5. Jupiter’s routing engine recalculates quotes every 3 seconds, ensuring users receive near-instant updates during volatile conditions.

Managing Token Lists and Custom Tokens

1. Phantom automatically imports tokens visible on Solana Explorer using your wallet’s token account list.

2. To add a custom SPL token not auto-detected, click the “+ Add Token” button next to the “To” field.

3. Paste the token’s mint address—Jupiter validates it against its internal token registry and fetches metadata.

4. If the token is not in Jupiter’s registry, you may still proceed by manually entering the mint address, but price and liquidity data will be limited.

5. Jupiter supports token lists such as CoinGecko and Solana FM, enabling filtering by market cap, volume, or community tags.

Frequently Asked Questions

Q: Does Jupiter charge a fee for swaps? A: Jupiter does not take a cut from swaps. Transaction fees go entirely to Solana validators and liquidity providers. Some integrated protocols may apply protocol-specific fees.

Q: Why does Phantom sometimes show “Insufficient balance” even when funds appear in the wallet? A: This occurs if the token balance resides in a non-default token account or if Phantom hasn’t synced recent transfers. Refreshing the wallet or manually adding the token account resolves it.

Q: Can I use Jupiter with Phantom on mobile? A: Yes—Phantom’s mobile app supports Jupiter through its built-in dApp browser. Ensure wallet permissions are enabled for external site connections.

Q: What happens if a Jupiter swap fails mid-execution? A: Failed swaps revert entirely. SOL used for compute units is consumed, but no tokens are transferred. Jupiter displays error codes like “0x1” (insufficient gas) or “0x3” (price movement beyond slippage).