# Murmurn: trade with the flock > Follow traders whose profit is verified on-chain and copy their trades automatically, sub-second, the moment they land. Non-custodial, and every fee is paid in USDC - so you never need to hold SOL. Murmurn is a social crypto trading web app. You follow traders whose results are verified on-chain, see what they buy and sell, and trade or copy those trades yourself in USDC. Solana is live; Base is built and opens later. It runs in the browser, there is no native app. - Platform fee: 0.45% per trade, 0.25% on blue-chip tokens, 10% off for invited users. - Network fees are paid in USDC inside the same transaction, so you never need SOL. - Non-custodial: you sign in with Google and get your own smart wallet. Murmurn never holds your funds or keys. ## What you can do ### Browse, trade, copy: Find a token, trade it, or copy someone who already did. Browse what is moving and which of the traders you follow hold it. Trade in USDC with the whole cost shown before you confirm. Or copy a trade and Murmurn places it for you, sized to your own limits. - Every fee is shown in USDC before you confirm - The network fee is paid in USDC, so you never need SOL - Copies use your size limits, not the trader's ### Trust Score: A score for every trader, from 0 to 100. Trust Score combines realised profit, how consistent the wins are, and how many trades sit behind them. Traders at 80 and above get a gold badge and a trail behind their avatar, so you can spot them in any list. - Only closed trades count - A trader needs a minimum number of trades to be rated - The score is recalculated as trades settle ### Proof of PnL: Profit you can check on-chain. Every trade is verified against the blockchain before it counts. Each result links to its transaction, so a screenshot cannot stand in for the real thing. - Trades are re-fetched and verified on-chain - Every trade links to its transaction - Realised PnL only, never paper gains ### Rug Shield: Exit before a token turns on you. Rug Shield watches the tokens you hold. If the mint authority changes or the liquidity is pulled, it sells your position to USDC for you. You set the limits, and you can turn it off. - Checks run on every token you hold - Sells to USDC, not to SOL - Works only inside the limits you approve ### Shill Check: See whether they still hold what they post. Every thesis shows whether the author still holds the token or has already sold, with the return since they posted. A trader who exited before writing about it is marked. - Live status on every post - Return since the post went up - Sold before posting is flagged ### Flock Mode: When traders you trust buy the same token, you hear about it once. Flock Mode watches the traders you follow. When enough of them buy the same token inside a window you choose, it sends one alert, or buys for you within a limit you set. - You choose who is in your flock - A signal needs 3 buyers by default - Auto-buy uses your own limit per trade ### Getting started: Sign in with Google and you have a wallet. There is no extension to install and no seed phrase to write down. Sign in, deposit USDC to the address you are given, and make your first trade. - Your wallet is created when you sign in - Deposit USDC on Solana, nothing else - You can withdraw to any Solana address ## Common questions ### What is Murmurn? Murmurn is a web app where you follow traders, see their trades and records, and trade crypto tokens in USDC. [Full answer](https://murmurn.com/answers/what-is-murmurn) ### How much does Murmurn cost? A platform fee of 0.45% per trade, or 0.25% on established tokens, with 10% off for invited users. Network fees are paid in USDC inside the same transaction. [Full answer](https://murmurn.com/answers/how-much-does-murmurn-cost) ### Do I need SOL to trade on Murmurn? No. You only need USDC. A relayer pays the network fee and is repaid in USDC inside the same transaction. [Full answer](https://murmurn.com/answers/do-i-need-sol-to-trade) ### Is Murmurn non-custodial? Yes. You control your wallet and Murmurn does not hold your funds or keys. [Full answer](https://murmurn.com/answers/is-murmurn-non-custodial) ### Does copying a trade happen automatically? No. Copy pre-fills the same trade and you review and confirm it yourself. [Full answer](https://murmurn.com/answers/does-copying-trade-for-me) ### What is a Trust Score? A 0 to 100 rating of a trader built from their closed trades. It needs at least 10 closed positions. [Full answer](https://murmurn.com/answers/what-is-a-trust-score) ### Is practice mode free, and is it real money? Yes, it is free and uses pretend money: $10,000 of paper funds at live prices. [Full answer](https://murmurn.com/answers/is-practice-mode-free) ### Which blockchains does Murmurn support? Solana is live. Base is built and will open later. [Full answer](https://murmurn.com/answers/which-networks-does-murmurn-support) ## Links - [Open the app](https://murmurn.com/app) - [Trader leaderboard](https://murmurn.com/leaderboard) - [Tokens](https://murmurn.com/tokens) - [About Murmurn](https://murmurn.com/about) - [Contact](https://murmurn.com/contact) - [Developer docs and public API](https://murmurn.com/docs) - [OpenAPI description](https://murmurn.com/openapi.json) - [llms.txt](https://murmurn.com/llms.txt) - [Privacy Policy](https://murmurn.com/privacy), [Terms](https://murmurn.com/terms), [Risk Disclosure](https://murmurn.com/risk) - Support: support@murmurn.com. X: https://x.com/murmurn_app. Discord: https://discord.gg/yjwnEgT8BP. Telegram: https://t.me/murmurn_official. Trading crypto carries risk. You can lose everything you put in.