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Quickstart
Wallet onto X Layer, first trade, first launch. Five minutes, no code.
Everything on size.fun happens on X Layer, chain 196. If your wallet has never been there, adding it is one prompt — the site offers it the first time you connect.
Get a wallet onto X Layer#
Any EVM wallet works. Most people here use OKX Wallet or MetaMask.
- Open size.fun and hit Connect.
- Pick your wallet from the list. Wallets announce themselves, so you're choosing from what's actually installed.
- Approve the network prompt. Decline it and you stay connected, you just can't trade until you switch.
Opens your wallet's own prompt. Nothing is sent anywhere.
That works on a wallet installed in this browser. If nothing happens, yours is on your phone or isn't exposing itself to this page: add the network by hand from the values above, or connect at size.fun and take the same prompt there.
Fund it with OKB#
OKB is the gas token and the asset every coin trades against. Two ways to get some onto X Layer:
- Withdraw from OKX and pick X Layer as the network. Usually cheapest.
- Bridge from Ethereum through the official X Layer bridge.
Blocks are one second and fees are a fraction of a cent, so you barely need anything for gas. What you bring is what you trade with.
Buy a coin#
- Open a coin from the board. You'll see its price, market cap and how far along the curve it is.
- Enter an amount of OKB and hit Buy. You're trading against the curve, so there's no order book and nobody to wait for.
- Confirm in your wallet. It lands in the next block.
Selling is the same in reverse: enter an amount, approve it once, sell. The curve always quotes a price, so a sell never fails for want of a buyer.
The first 15 seconds
Buys landing in the opening seconds of a launch pay an extra tax. It starts at 99% and decays to nothing over 15 seconds, which is what makes sniping pointless. You'll never hit it unless you're racing a brand-new coin.
Launch a coin#
- Hit Launch in the sidebar.
- Give it a name, ticker, image and description. Socials are optional and show on the coin's page.
- Set a creator tax if you want one: 0 to 10% of every trade, paid to you on top of your share of the base fee. Most launches leave it at 0.
- Pay the 0.01 OKB launch fee. Trading opens in the same transaction.
Pick a launcher first — seeded pool for a coin every indexer sees immediately, virtual curve for one with a creator tax and buybacks. Two ways to launch covers the difference; the form defaults to seeded.
You get no free tokens. On a seeded launch you can buy in the same transaction that creates the coin, which is the only buy its first block allows. On a curve, buy it off the curve — and buy it in the same transaction as the launch, which the site does for you when you enter a dev buy. Otherwise you're leaving a window open for snipers. Launch a token is the same thing in code.
Collect what you earn#
Fees pile up as your coin trades — on its curve, or uncollected in its pool. Getting them into your wallet is two steps, both on the creator dashboard:
- Sweep the curve, or collect a seeded pool. Splits the pending fees and moves your share into the escrow.
- Claim from the escrow. One claim collects everything you're owed across every coin you've launched, before and after graduation.
The escrow pays whoever calls it, so there's no address to type and nothing to send to the wrong place. Claiming has the detail.