Trade graduated tokens on the ACTFUN built-in AMM

Trade graduated ACTFUN tokens using the built-in constant-product AMM send ARC to buy, or approve and sell tokens back for ARC.

Once a token’s mining phase is complete, it graduates automatically and a built-in constant-product AMM (automated market maker) goes live inside the same contract. No external DEX, no bridging you trade directly through the token’s launcher contract on Arc Testnet.

Before you start

Trading is only available after graduation. A token graduates when 95% of its supply has been mined. Look for the green Graduated badge on the token card or detail page. If the badge is not present, the token is still in the mining phase and the swap panel is not yet available.

How the AMM works

MINEPAD uses a constant-product formula: x * y = k, where x is the ARC reserve, y is the token reserve, and k remains constant after each trade.

• Buying sends ARC in and receives tokens out: tokensOut = arcIn × tokenReserve / (arcReserve + arcIn)
• Selling sends tokens in and receives ARC out: arcOut = tokensIn × arcReserve / (tokenReserve + tokensIn)

The pool is seeded at graduation with the 5% LP reserve tokens and all ARC fees collected during mining. There are no additional fees on top of gas.

Large trades move the price significantly because the pool starts relatively small. Check the estimated output before confirming — a trade that is a large fraction of the pool’s reserves will experience high price impact.

Read the price chart

On any graduated token’s detail page, a price chart appears above the stats grid. The chart shows historical trade prices derived from on-chain swap events. Use it to see how the token price has moved since graduation.

Buy tokens

1. Open the token's detail page

   Navigate to actfun.xyz , find the graduated token you want, and click its card to open the detail page.

2. Select Buy in the swap panel

   The swap panel on the right side of the page defaults to the Buy tab. Enter the amount of ARC you want to spend.

3. Review the estimated output

   The panel shows the estimated number of tokens you’ll receive, calculated using the AMM formula against the current pool reserves. This estimate is what you’d get at the current price with zero slippage.

4. Set your slippage tolerance

   The swap sends a minTokensOut parameter to the contract. If the price moves between when you submit and when the transaction confirms, and you receive fewer tokens than minTokensOut, the transaction reverts. The swap panel calculates this automatically from your slippage setting.

5. Confirm in MetaMask

   Click Buy. MetaMask opens with the ARC amount as the transaction value. Click Confirm to submit. Tokens arrive in your wallet once the transaction confirms.

Sell tokens

Selling requires two transactions: first approving the launcher contract to spend your tokens (an ERC-20 approve call), then executing the sell. The swap panel handles both steps automatically.

1. Select Sell in the swap panel

   Click the Sell tab in the swap panel. Enter the number of tokens you want to sell.

2. Review the estimated ARC output

   The panel shows the estimated ARC you’ll receive based on the current pool state.

3. Click Approve

   If you haven’t approved the launcher contract for this token yet, the panel shows an Approve button first. Click it and confirm the approval transaction in MetaMask. This authorises the contract to transfer your tokens when you sell.

4. Click Sell

   Once the approval confirms, click Sell and confirm the second transaction in MetaMask. The contract transfers your tokens into the pool and sends ARC to your wallet.

Slippage and price impact can cause you to receive significantly less than the displayed estimate, especially on large trades or in low-liquidity pools. For large sells, consider splitting into multiple smaller transactions to reduce price impact.