The guide.
You reply to a tweet that has a coin in it. Reply reads your message, buys or sells from your wallet, and answers under your reply with what you got.
What to reply
@replysol 0.5 | Buy 0.5 SOL of the coin. .5, 0.5 sol and buy 0.5 work too. |
@replysol $20 | Buy $20 worth, at the current SOL price. |
@replysol sell | Sell all of it. |
@replysol sell 50% | Sell part of it. |
Anything else in the reply means it isn't an order, so a chatty reply never buys by accident. Tag Reply by name: a reply that just says 0.5 never reaches it.
Which coin
The coin comes from the tweet you reply to: its contract address, or a pump.fun, DexScreener, GMGN, Birdeye or Solscan link, or the same inside a tweet it quotes. Replying under someone else's reply works too, however deep: Reply then takes the coin from the thread's first post. If it finds no coin, or a tweet with more than one, it says so and doesn't trade. A ticker like $TOAD on its own isn't enough, because tickers aren't unique.
Limits
Each reply can spend up to your own limit, 1 SOL unless you change it (up to 5 SOL). Slippage is 15% unless you change it. The smallest buy is 0.001 SOL. Each reply fills once, and editing the tweet doesn't fill it again. Turn reply trading off any time in the app.
Fees
1% of every trade. All of it buys $REPLY and burns it. You also pay Solana's network fee, a fraction of a cent.
Your wallet
Signing in with X gives you a Solana wallet held by Privy, a wallet provider. You own it. Reply can only place trades in it: the permission it holds is limited to swaps through Jupiter, and it can't transfer your SOL or coins to anyone. Withdrawals happen only in the app, signed in as you.
When a trade fails
Reply answers with the reason: not enough SOL, over your limit, no coin in the tweet, or the price moved past your slippage. A failed trade isn't retried, so nothing fills late without you knowing.