> For the complete documentation index, see [llms.txt](https://docs.unstable.run/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.unstable.run/for-users/buy-sell.md). # Buying & selling Every token page on Unstable has a **trade panel** in the top-right column. It handles both buy and sell directions with the same two-tx flow. ## Anatomy of the panel | Row | What it does | | ------------------ | ----------------------------------------------------------------------------------------------------- | | Buy / Sell tabs | Flip direction. Everything below re-labels. | | Balance chip + MAX | Live wallet balance in the currency you're spending. MAX auto-fills. | | Amount input | Type manually or use the quick buttons. | | Quick buttons | Fixed dollar amounts on Buy ($10, $50, $100, $500); percentage buttons on Sell (25%, 50%, 75%, 100%). | | "You receive" | Live estimate of the other side of the trade at the current pool price. | | "Price impact" | Rough estimate of how much your trade will move the price. | | Buy / Sell button | Executes the two-tx flow. | | Fee note | Reminder that the pool charges 1% and gas is a fraction of a cent. | | Side stats | Market cap, 24h volume, holder count, approximate liquidity. | ## The MAX button `MAX` fills the amount input with your full spendable balance in the current currency: * **On Buy** — MAX fills with your USDT0 balance **minus a 0.5 USDT gas buffer**. USDT0 is Stable's native gas token, so a literal 100% spend would leave nothing to pay the swap fees; the buffer keeps the transaction reliably confirmable. * **On Sell** — MAX fills with 100% of your token balance. Selling a token doesn't need that token for gas — you pay in USDT0 — so a full sell is always safe. The button is greyed out when the balance is zero or when you haven't connected a wallet. ## Quick amount buttons The four small buttons below the input adapt to the side: **Buy** (dollar-fixed) `$10` — good for testing a fresh pool `$50` — mid-size entry `$100` — standard entry `$500` — sniper-tier entry **Sell** (percentage of balance) `25%`, `50%`, `75%`, `100%` — computed from your live balance at click time. Handy for taking profit in fractions. ## The two-tx flow Every trade on Unstable runs through **canonical Uniswap V3 SwapRouter02**, so two transactions: 1. **Approve** — you're granting the router permission to move exactly the amount you're spending from your wallet. 2. **exactInputSingle** — the actual swap. Tokens land in your wallet the moment this confirms (sub-second). Both transactions cost roughly $0.001-$0.002 in gas, paid in USDT0. Total real trading cost per round-trip: **the 1% pool fee, twice**. There is no separate router fee, no bot tax, no protocol skim beyond the pool's 1% (which goes to the LP position — see [Fees & creator rewards](/under-the-hood/fees-and-rewards.md)). ## Slippage & impact The trade panel doesn't ship an explicit slippage slider. Instead, `amountOutMinimum` is set to `1` — meaning the swap only reverts if the pool returns literally nothing. This is fine for fresh V3 pools with single-sided liquidity: the tick is deterministic at launch, and MEV bots don't sandwich shallow pools economically. If a pool has grown enough liquidity that a slippage cap makes sense (typically past several thousand dollars of TVL), a future release will surface a max-slippage control. For now: eyeball the "Price impact" row before submitting. ## What can go wrong | Message | Meaning | | ---------------------------------- | ----------------------------------------------------------------------------------- | | "Connect wallet first" | You clicked Buy/Sell without a wallet connected. Fix: click Connect in the header. | | "Enter amount" | Amount field is empty or zero. Fix: type something. | | "Trade failed: insufficient funds" | Not enough of the token you're spending. Fix: MAX with a smaller buffer, or top up. | | "Trade failed: user rejected" | You (or your wallet) declined the transaction. Retry when ready. | ## Next * [Reading the chart](/for-users/reading-the-chart.md) — what the candles mean * [Trades & holders panel](/for-users/trades-and-holders.md) — the two live feeds under the chart --- # Agent Instructions This documentation is published with GitBook. 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