Trading guide

Before you start

1. Connect a wallet on Base Mainnet (MetaMask, Coinbase Wallet, Rainbow, etc.).
2. Hold enough ETH on Base for gas and, if buying, the purchase amount.
3. For selling, the token must be on the Approved Tokens list (≥ $300K market cap).

Listing types

Standard (type 0)

• One buyer takes all remaining tokens in a single transaction.
• Best for fixed-size OTC deals.

Crowdfunding (type 1)

• Multiple buyers can fill any portion at the same per-token price.
• UI shows a funding progress bar.
• Seller can cancel anytime and receives only unsold tokens back.

Selling tokens

1. Go to Create Listing.
2. Choose Standard or Crowdfunding.
3. Enter the token contract address (must be approved).
4. Amount — pick 25%, 50%, 100% of your wallet balance, a custom %, or enter amount manually.
5. Price — pick a preset vs market (5% under, at market, 10% over, etc.), a custom % offset, or enter total ETH manually. Total price updates from live market data when available.
6. Approve the escrow contract to spend your tokens (wallet prompt).
7. Confirm createListing (wallet prompt).

Tokens move into the escrow contract. You can cancel from My Listings until they are sold.

Buying tokens

Standard listing

1. Open the listing on the home page.
2. Review the price badge (vs market) and total ETH required.
3. Click buy and confirm the transaction with the listed ETH amount.

Crowdfunding listing

1. Open the listing.
2. Enter how many tokens you want (or use max).
3. Confirm ETH sent matches getEthCost for that amount.
4. Partial fills update amountRemaining on-chain.

Fees (each purchase)

Example: buying 1,000 tokens worth 1 ETH → buyer pays 1 ETH; seller receives 0.99 ETH; fee wallet receives 0.01 ETH + 10 tokens (if 1% of 1,000).

Cancelling a listing

Only the seller can cancel an active listing:

1. Go to My Listings.
2. Cancel the listing.
3. Unsold tokens return to your wallet.

Already-sold portions in crowdfunding listings cannot be reversed on-chain.

Approving a new token

1. Go to Approved Tokens.
2. Paste a Base ERC-20 contract address.
3. Submit — the server checks DexScreener/CoinGecko market cap.
4. If ≥ $300K, the token is added to the shared list (Redis in production).

Price badges

Prices refresh about every 60 seconds.

Tips

• Always verify the token contract address on Basescan before trading.
• Read the Security page and verify the escrow on Basescan for large trades.
• Slippage is not a DEX issue here — you pay the exact ETH calculated for your token amount.