Pump SDK

TypeScript SDK for the Pump protocol on Solana — token creation, bonding curves, AMM pools, fee sharing, and volume rewards.

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What is Pump SDK?

Pump SDK is the community TypeScript SDK for the Pump.fun protocol on Solana. It provides offline-first instruction builders for every on-chain operation — token creation, bonding curve trading, AMM pool management, tiered fee configuration, creator fee sharing, volume-based token incentives, and social referral fees.

The SDK never sends transactions itself. It returns TransactionInstruction[] that you compose into transactions with your preferred signing and sending strategy.

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📋 Table of Contents

• Quick Start
• Usage Examples
  • Create a Token
  • Buy Tokens on the Bonding Curve
  • Sell Tokens
  • Check Graduation Progress
  • Set Up Fee Sharing
• API Reference
• On-Chain Programs
• Configuration
• Error Handling
• FAQ
• Architecture
• Contributing
• License
• Acknowledgments

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🚀 Quick Start

Installation

# npm
npm install @pump-fun/pump-sdk

# yarn
yarn add @pump-fun/pump-sdk

# pnpm
pnpm add @pump-fun/pump-sdk

Peer Dependencies

The SDK requires these Solana packages (install them if not already present):

npm install @solana/web3.js @solana/spl-token @coral-xyz/anchor bn.js

Minimal Example

import { Connection, PublicKey } from "@solana/web3.js";
import { OnlinePumpSdk } from "@pump-fun/pump-sdk";

// 1. Create an online SDK instance
const connection = new Connection("https://api.mainnet-beta.solana.com");
const sdk = new OnlinePumpSdk(connection);

// 2. Fetch current token state
const mint = new PublicKey("YourTokenMintAddress...");
const summary = await sdk.fetchBondingCurveSummary(mint);

console.log("Market Cap:", summary.marketCap.toString(), "lamports");
console.log("Graduated:", summary.isGraduated);
console.log("Progress:", summary.progressBps / 100, "%");

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📖 Usage Examples

Create a Token

import { Keypair } from "@solana/web3.js";
import { PUMP_SDK } from "@pump-fun/pump-sdk";

const mintKeypair = Keypair.generate();
const creator = wallet.publicKey;

const createIx = await PUMP_SDK.createV2Instruction({
  mint: mintKeypair.publicKey,
  name: "My Token",
  symbol: "MYTKN",
  uri: "https://arweave.net/metadata.json",
  creator,
  user: creator,
  mayhemMode: false,
});

// createIx is a TransactionInstruction — add to a Transaction and send

Warning: Do NOT use createInstruction — it is deprecated (v1). Always use createV2Instruction.

Buy Tokens on the Bonding Curve

import { Connection, PublicKey } from "@solana/web3.js";
import BN from "bn.js";
import { getBuyTokenAmountFromSolAmount, OnlinePumpSdk } from "@pump-fun/pump-sdk";

const connection = new Connection("https://api.mainnet-beta.solana.com");
const sdk = new OnlinePumpSdk(connection);

const mint = new PublicKey("TokenMintAddress...");
const user = wallet.publicKey;

// Fetch all required state in parallel — buyState includes tokenProgram (auto-detected)
const [buyState, global, feeConfig] = await Promise.all([
  sdk.fetchBuyState(mint, user),
  sdk.fetchGlobal(),
  sdk.fetchFeeConfig(),
]);

assert(!buyState.bondingCurve.complete, "Token has already graduated to AMM");

// Calculate expected tokens for 0.1 SOL
const solAmount = new BN(100_000_000); // 0.1 SOL in lamports
const expectedTokens = getBuyTokenAmountFromSolAmount({
  global,
  feeConfig,
  mintSupply: buyState.bondingCurve.tokenTotalSupply,
  bondingCurve: buyState.bondingCurve,
  amount: solAmount,
});

// buyState spreads: bondingCurveAccountInfo, bondingCurve, associatedUserAccountInfo, tokenProgram
const buyIxs = await sdk.buyInstructions({
  ...buyState,
  mint,
  user,
  amount: expectedTokens,
  solAmount,
  slippage: 0.05,         // 5% slippage tolerance
});
// buyIxs is TransactionInstruction[] — compose into a VersionedTransaction and send

Note: fetchBuyState auto-detects whether the token uses SPL Token or Token-2022 and returns tokenProgram accordingly. Always spread ...buyState into buyInstructions to ensure the correct program is used.

Sell Tokens

import BN from "bn.js";
import { getSellSolAmountFromTokenAmount, OnlinePumpSdk } from "@pump-fun/pump-sdk";

const sdk = new OnlinePumpSdk(connection);

// Fetch required state in parallel
// Pass buyState.tokenProgram if you have it to avoid a second mint account fetch
const [sellState, global, feeConfig] = await Promise.all([
  sdk.fetchSellState(mint, user),
  sdk.fetchGlobal(),
  sdk.fetchFeeConfig(),
]);

const tokenAmount = new BN(1_000_000_000); // amount in raw units (6 decimals)
const expectedSol = getSellSolAmountFromTokenAmount({
  global,
  feeConfig,
  mintSupply: sellState.bondingCurve.tokenTotalSupply,
  bondingCurve: sellState.bondingCurve,
  amount: tokenAmount,
});

// sellState spreads: bondingCurveAccountInfo, bondingCurve, tokenProgram
const sellIxs = await sdk.sellInstructions({
  ...sellState,
  mint,
  user,
  amount: tokenAmount,
  solAmount: expectedSol,
  slippage: 0.05,
});

Note: fetchSellState returns tokenProgram (auto-detected from the mint). Always spread ...sellState into sellInstructions.

Check Graduation Progress

import { OnlinePumpSdk } from "@pump-fun/pump-sdk";

const sdk = new OnlinePumpSdk(connection);
const progress = await sdk.fetchGraduationProgress(mint);

console.log(`Progress: ${progress.progressBps / 100}%`);
console.log(`Graduated: ${progress.isGraduated}`);
console.log(`Tokens remaining: ${progress.tokensRemaining.toString()}`);
console.log(`SOL accumulated: ${progress.solAccumulated.toString()}`);

Set Up Fee Sharing

import { PublicKey } from "@solana/web3.js";
import { PUMP_SDK } from "@pump-fun/pump-sdk";

// Create a fee sharing config (creator only, before or after graduation)
const createConfigIx = await PUMP_SDK.createFeeSharingConfig({
  creator: wallet.publicKey,
  mint: tokenMint,
  pool: null,  // null for pre-graduation tokens
});

// Update shareholders (must total exactly 10,000 BPS = 100%)
const updateIx = await PUMP_SDK.updateFeeShares({
  authority: wallet.publicKey,
  mint: tokenMint,
  currentShareholders: [wallet.publicKey],
  newShareholders: [
    { address: wallet.publicKey, shareBps: 7000 },         // 70%
    { address: new PublicKey("Partner..."), shareBps: 3000 }, // 30%
  ],
});

Warning: Shares must total exactly 10,000 BPS. The SDK throws InvalidShareTotalError otherwise. Maximum 10 shareholders.

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📚 API Reference

See docs/api-reference.md for the complete API documentation with full TypeScript signatures, parameters, and examples.

Core Classes

Class	Description
PumpSdk	Offline instruction builder — no RPC connection required
OnlinePumpSdk	Extends PumpSdk with RPC fetchers for account state
PUMP_SDK	Pre-instantiated singleton of PumpSdk

Bonding Curve Functions

Function	Returns	Description
getBuyTokenAmountFromSolAmount(...)	BN	Tokens received for a given SOL amount
getBuySolAmountFromTokenAmount(...)	BN	SOL cost for a given token amount
getSellSolAmountFromTokenAmount(...)	BN	SOL received for selling tokens
bondingCurveMarketCap(...)	BN	Current market cap in lamports
newBondingCurve(global)	BondingCurve	Fresh bonding curve from global config

Analytics Functions

Function	Returns	Description
calculateBuyPriceImpact(...)	PriceImpactResult	Price impact for a buy trade
calculateSellPriceImpact(...)	PriceImpactResult	Price impact for a sell trade
getGraduationProgress(...)	GraduationProgress	Bonding curve completion percentage
getTokenPrice(...)	TokenPriceInfo	Current buy/sell price per token
getBondingCurveSummary(...)	BondingCurveSummary	Complete bonding curve overview

Fee Functions

Function	Returns	Description
getFee(...)	BN	Fee amount for a trade
computeFeesBps(...)	CalculatedFeesBps	Current fee basis points (protocol + creator)
calculateFeeTier(...)	Fees	Fee tier for a given market cap

Token Incentive Functions

Function	Returns	Description
totalUnclaimedTokens(...)	BN	Unclaimed $PUMP reward tokens
currentDayTokens(...)	BN	Tokens earned today

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🔗 On-Chain Programs

Program	ID	Purpose
Pump	6EF8rrecthR5Dkzon8Nwu78hRvfCKubJ14M5uBEwF6P	Bonding curve creation, buying, selling, migration
PumpAMM	pAMMBay6oceH9fJKBRHGP5D4bD4sWpmSwMn52FMfXEA	Graduated AMM pools — trading, liquidity, fees
PumpFees	pfeeUxB6jkeY1Hxd7CsFCAjcbHA9rWtchMGdZ6VojVZ	Fee sharing config and social fee PDAs

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🔧 Configuration

Constructor

The SDK has no required environment variables. You configure it via the constructor:

Parameter	Type	Required	Description
connection	Connection	Only for OnlinePumpSdk	Solana RPC connection

Key Constants

Constant	Value	Description
PUMP_PROGRAM_ID	6EF8rrecthR5Dkzon8Nwu78hRvfCKubJ14M5uBEwF6P	Main Pump program
PUMP_AMM_PROGRAM_ID	pAMMBay6oceH9fJKBRHGP5D4bD4sWpmSwMn52FMfXEA	AMM program
PUMP_FEE_PROGRAM_ID	pfeeUxB6jkeY1Hxd7CsFCAjcbHA9rWtchMGdZ6VojVZ	Fee program
PUMP_TOKEN_MINT	pumpCmXqMfrsAkQ5r49WcJnRayYRqmXz6ae8H7H9Dfn	$PUMP token mint
MAX_SHAREHOLDERS	10	Maximum shareholders in fee sharing
ONE_BILLION_SUPPLY	1000000000000000	1B tokens with 6 decimals
BONDING_CURVE_NEW_SIZE	151	Bonding curve account size in bytes

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⚠️ Error Handling

The SDK defines typed errors for fee sharing validation:

Error	Cause	Fix
NoShareholdersError	Empty shareholders array	Provide at least 1 shareholder
TooManyShareholdersError	More than 10 shareholders	Reduce to ≤ 10 shareholders
ZeroShareError	A shareholder has 0 or negative BPS	Set all shares to positive values
InvalidShareTotalError	Shares don't sum to 10,000 BPS	Ensure shares total exactly 10,000
DuplicateShareholderError	Same address appears twice	Remove duplicate addresses
ShareCalculationOverflowError	BPS sum exceeds safe integer range	Check share values
PoolRequiredForGraduatedError	pool is null for a graduated coin	Pass the pool address from fetchPool()

Common Pitfalls

Warning: Never use JavaScript number for token or lamport amounts. Always use BN from bn.js. JavaScript numbers lose precision above 2^53.

Warning: Check bondingCurve.complete before trading. If true, the token has graduated to AMM — use ammBuyInstruction/ammSellInstruction instead.

Warning: createInstruction is deprecated. Use createV2Instruction for all new token creation.

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❓ FAQ

Q: Do I need an RPC connection to use the SDK? No. PumpSdk (and the PUMP_SDK singleton) builds instructions offline. Only use OnlinePumpSdk when you need to fetch on-chain state.

Q: How do I know if a token has graduated to AMM? Check bondingCurve.complete === true or use sdk.isGraduated(mint). Graduated tokens trade on PumpAMM, not the bonding curve.

Q: What is slippage in buy/sell instructions? A decimal fraction (e.g., 0.05 = 5%). The SDK adjusts maxSolCost (buy) or minSolOutput (sell) to protect against price movement.

Q: Why do amounts use BN instead of number? Solana token amounts (lamports, token units) regularly exceed JavaScript's safe integer limit (2^53). BN provides arbitrary-precision arithmetic.

Q: What's the difference between Pump and PumpAMM programs? Pump handles the bonding curve phase (creation → graduation). PumpAMM handles post-graduation trading with constant-product AMM pools.

Q: How does fee sharing work? Token creators can split their creator fees among up to 10 shareholders. Each shareholder gets a share in basis points (1/10,000). The total must equal exactly 10,000 BPS (100%).

Q: What is Mayhem Mode? A special token creation mode with randomized bonding curve parameters. Tokens created with mayhemMode: true have unpredictable pricing dynamics.

Q: Can I use the SDK in the browser? Yes. The SDK has no Node.js-specific dependencies. The ESM build works in modern browsers with a bundler.

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🏗️ Architecture

See docs/architecture.md for detailed system design, data flow diagrams, and module explanations.

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🤝 Contributing

We welcome contributions! See CONTRIBUTING.md for:

• Development setup
• Branch naming and commit conventions
• Testing requirements
• PR process

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📄 License

MIT © nirholas

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🙏 Acknowledgments

• Pump.fun — The protocol this SDK interfaces with
• Solana Labs — Blockchain infrastructure and @solana/web3.js
• Coral (Anchor) — IDL-based program interaction via @coral-xyz/anchor
• bn.js — Arbitrary-precision arithmetic for financial math
• @pump-fun/pump-swap-sdk — AMM swap integration