pumpfun

Derive the bonding curve PDA with seeds ["bonding-curve", mint], build the buy instruction with the amount and maxSolCost for slippage, and include the creator vault, fee program, and fee config accounts. Send the transaction signed by the buyer.

Use the create instruction for legacy SPL tokens or create_v2 for Token2022 tokens, passing name, symbol, and metadata URI. Generate a mint keypair, derive the bonding curve PDAs, and include the Metaplex metadata account for legacy creates.

The bonding curve handles initial token launches with virtual reserves and no initial liquidity, while PumpSwap is a constant-product AMM for graduated tokens. When a curve completes, liquidity migrates to PumpSwap and LP tokens are burned.

Bonding curve accounts under 150 bytes and pool accounts under 300 bytes need an extendAccount instruction prepended before trading. Check the account data length and add the extension instruction to the same transaction.

For bonding curves, call collect_creator_fee against the creator-vault PDA derived from your address. For PumpSwap pools, use collect_coin_creator_fee with the creator vault authority PDA and its associated quote token account.

Yes, the create_v2 instruction creates Token2022 tokens instead of legacy SPL tokens and supports Mayhem mode. It uses a 14-account structure including the Token2022 program and Mayhem program accounts.