Use Create on Base or Robinhood Chain. Switch the chain in your wallet first. One confirmation creates the token and opens the market.

Steps

1. Connect your wallet on base1.fun.
2. Enter a name, ticker, and image. Those freeze after launch.
3. Pick a quote (what people buy and sell against). Fees, first buy, and holder claims all use this asset — not your new coin, and not ETH unless ETH is the pair.
4. Optionally set a first buy (max 10% of supply, sellable, no vesting). You can airdrop a slice of that buy to pasted wallets in the same transaction.
5. Pick a mode — Creator or Holders claim. See Modes. Burn this coin and Burn $BASECAT are not open yet.
6. Pick a fee of 1%, 2% (default), or 3%. Paid in the quote, not in your new coin. See Fees.
7. Read the review screen. Confirm in your wallet. Creation costs 0.001 ETH.

If anything in that transaction fails, nothing is created.

After it lands

The coin is live. Anyone can buy. You cannot mint extra tokens, pause trading, or pull liquidity. A confirmed launch credits 500 BASE 1 Rewards points to your wallet.

Selling needs buyers first. If nobody has bought yet, there may be nothing to sell into. That is normal at the start.

The coin page shows the lock, the fee, the first-20-seconds countdown, and (if you used one) how much you bought at launch.

You choose

Field	What to know
Name / ticker / image	Cannot be edited later.
Quote	ETH, a dollar stable, $BASECAT, wrapped majors on Base, or a listed stock token. Fees, first buy, and holder claims all pay in this asset.
Mode	Creator or Holders claim. Self-burn and $BASECAT burn are not open yet.
Fee	1% / 2% / 3% of the quote leg. Locked for that coin.
First buy	Optional. Cap is 10% of supply. Sellable. No vesting.
Airdrop	Optional percent of that first buy, equal split in the launch tx. Not Rewards mode.

You cannot choose

• A custom supply (it is always 1 billion)
• A bonding curve
• Unlocking liquidity later
• Changing the fee after launch
• A vested team vault or Merkle airdrop claim site