Pump.fun 程序 ID、IDL 与买卖指令

import idl from "./idl/pump.json" assert { type: "json" };
// or: const idl = require("./idl/pump.json");

console.log(idl.address);
// 6EF8rrecthR5Dkzon8Nwu78hRvfCKubJ14M5uBEwF6P

const BUY: [u8; 8] = [102, 6, 61, 18, 1, 218, 235, 234];
const SELL: [u8; 8] = [51, 230, 133, 164, 1, 127, 131, 173];
const CREATE: [u8; 8] = [24, 30, 200, 40, 5, 28, 7, 119];

fn classify(data: &[u8]) -> Option<&'static str> {
    let disc = data.get(..8)?;
    if disc == BUY { Some("buy") }
    else if disc == SELL { Some("sell") }
    else if disc == CREATE { Some("create") }
    else { None }
}

import {
  PublicKey,
  TransactionInstruction,
  SystemProgram,
} from "@solana/web3.js";
import { TOKEN_PROGRAM_ID, getAssociatedTokenAddressSync } from "@solana/spl-token";
import bs58 from "bs58";

export const PUMP_PROGRAM_ID = new PublicKey(
  "6EF8rrecthR5Dkzon8Nwu78hRvfCKubJ14M5uBEwF6P"
);
export const PUMP_FEE_PROGRAM_ID = new PublicKey(
  "pfeeUxB6jkeY1Hxd7CsFCAjcbHA9rWtchMGdZ6VojVZ"
);
export const GLOBAL = new PublicKey(
  "4wTV1YmiEkRvAtNtsSGPtUrqRYQMe5SKy2uB4Jjaxnjf"
);

const BUY_DISC = Buffer.from([102, 6, 61, 18, 1, 218, 235, 234]);
const SELL_DISC = Buffer.from([51, 230, 133, 164, 1, 127, 131, 173]);

function u64le(n) {
  const b = Buffer.alloc(8);
  b.writeBigUInt64LE(BigInt(n));
  return b;
}

export function bondingCurvePda(mint) {
  return PublicKey.findProgramAddressSync(
    [Buffer.from("bonding-curve"), mint.toBuffer()],
    PUMP_PROGRAM_ID
  )[0];
}

export function eventAuthorityPda() {
  return PublicKey.findProgramAddressSync(
    [Buffer.from("__event_authority")],
    PUMP_PROGRAM_ID
  )[0];
}

export function creatorVaultPda(creator) {
  return PublicKey.findProgramAddressSync(
    [Buffer.from("creator-vault"), creator.toBuffer()],
    PUMP_PROGRAM_ID
  )[0];
}

export function feeConfigPda() {
  // seeds: ["fee_config", pump_program_id] on the fee program
  return PublicKey.findProgramAddressSync(
    [Buffer.from("fee_config"), PUMP_PROGRAM_ID.toBuffer()],
    PUMP_FEE_PROGRAM_ID
  )[0];
}

/** Build a Pump.fun bonding-curve buy instruction */
export function buildBuyIx({
  mint,
  user,
  feeRecipient,
  creator, // bonding_curve.creator
  amount, // tokens out
  maxSolCost, // lamports
  trackVolume = false,
}) {
  const bondingCurve = bondingCurvePda(mint);
  const associatedBondingCurve = getAssociatedTokenAddressSync(
    mint,
    bondingCurve,
    true
  );
  const associatedUser = getAssociatedTokenAddressSync(mint, user);
  const [globalVolume] = PublicKey.findProgramAddressSync(
    [Buffer.from("global_volume_accumulator")],
    PUMP_PROGRAM_ID
  );
  const [userVolume] = PublicKey.findProgramAddressSync(
    [Buffer.from("user_volume_accumulator"), user.toBuffer()],
    PUMP_PROGRAM_ID
  );

  const data = Buffer.concat([
    BUY_DISC,
    u64le(amount),
    u64le(maxSolCost),
    Buffer.from([trackVolume ? 1 : 0]),
  ]);

  return new TransactionInstruction({
    programId: PUMP_PROGRAM_ID,
    keys: [
      { pubkey: GLOBAL, isSigner: false, isWritable: false },
      { pubkey: feeRecipient, isSigner: false, isWritable: true },
      { pubkey: mint, isSigner: false, isWritable: false },
      { pubkey: bondingCurve, isSigner: false, isWritable: true },
      { pubkey: associatedBondingCurve, isSigner: false, isWritable: true },
      { pubkey: associatedUser, isSigner: false, isWritable: true },
      { pubkey: user, isSigner: true, isWritable: true },
      { pubkey: SystemProgram.programId, isSigner: false, isWritable: false },
      { pubkey: TOKEN_PROGRAM_ID, isSigner: false, isWritable: false },
      { pubkey: creatorVaultPda(creator), isSigner: false, isWritable: true },
      { pubkey: eventAuthorityPda(), isSigner: false, isWritable: false },
      { pubkey: PUMP_PROGRAM_ID, isSigner: false, isWritable: false },
      { pubkey: globalVolume, isSigner: false, isWritable: false },
      { pubkey: userVolume, isSigner: false, isWritable: true },
      { pubkey: feeConfigPda(), isSigner: false, isWritable: false },
      { pubkey: PUMP_FEE_PROGRAM_ID, isSigner: false, isWritable: false },
    ],
    data,
  });
}

/** Build a Pump.fun bonding-curve sell instruction */
export function buildSellIx({
  mint,
  user,
  feeRecipient,
  creator,
  amount,
  minSolOutput,
}) {
  const bondingCurve = bondingCurvePda(mint);
  const associatedBondingCurve = getAssociatedTokenAddressSync(
    mint,
    bondingCurve,
    true
  );
  const associatedUser = getAssociatedTokenAddressSync(mint, user);

  const data = Buffer.concat([SELL_DISC, u64le(amount), u64le(minSolOutput)]);

  return new TransactionInstruction({
    programId: PUMP_PROGRAM_ID,
    keys: [
      { pubkey: GLOBAL, isSigner: false, isWritable: false },
      { pubkey: feeRecipient, isSigner: false, isWritable: true },
      { pubkey: mint, isSigner: false, isWritable: false },
      { pubkey: bondingCurve, isSigner: false, isWritable: true },
      { pubkey: associatedBondingCurve, isSigner: false, isWritable: true },
      { pubkey: associatedUser, isSigner: false, isWritable: true },
      { pubkey: user, isSigner: true, isWritable: true },
      { pubkey: SystemProgram.programId, isSigner: false, isWritable: false },
      { pubkey: creatorVaultPda(creator), isSigner: false, isWritable: true },
      { pubkey: TOKEN_PROGRAM_ID, isSigner: false, isWritable: false },
      { pubkey: eventAuthorityPda(), isSigner: false, isWritable: false },
      { pubkey: PUMP_PROGRAM_ID, isSigner: false, isWritable: false },
      { pubkey: feeConfigPda(), isSigner: false, isWritable: false },
      { pubkey: PUMP_FEE_PROGRAM_ID, isSigner: false, isWritable: false },
    ],
    data,
  });
}

// Identify buy/sell from a confirmed transaction
export function parsePumpInstructionData(dataBase58) {
  const data = Buffer.from(bs58.decode(dataBase58));
  const disc = data.subarray(0, 8);
  if (disc.equals(BUY_DISC)) {
    return {
      name: "buy",
      amount: data.readBigUInt64LE(8),
      maxSolCost: data.readBigUInt64LE(16),
    };
  }
  if (disc.equals(SELL_DISC)) {
    return {
      name: "sell",
      amount: data.readBigUInt64LE(8),
      minSolOutput: data.readBigUInt64LE(16),
    };
  }
  return null;
}

const res = await fetch("https://swap-v2.solanatracker.io/swap", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    wallet: "YOUR_WALLET_ADDRESS",
    from: "So11111111111111111111111111111111111111112",
    to: "TOKEN_MINT_ADDRESS",
    amount: 0.1,
    slippage: 15,
    priorityFee: 0.0005,
  }),
});
const { txn } = await res.json();
// Sign and send txn