Hadron Quickstart - Hadron Docs

Install the Hadron package

npm i @hadron-fi/sdk-v2 @solana/web3.js @solana/spl-token

Initializing a pool

Initialising a hadron pool gives you your own propAMM instance.

import { Hadron, Q32_ONE } from "@hadron-fi/sdk-v2";

const { instructions, poolAddress, seed } = Hadron.initialize(payer.publicKey, {
  //Mandatory params
  mintX,
  mintY,
  authority: payer.publicKey,
  initialMidpriceQ32: Q32_ONE, // midprice = 1.0 m
  //Optional params
  seed: "",
  tokenProgramX: "", //pick between token2022 and SPL tokens
  tokenProgramY: "", //SPL 20 Default for X and Y
  maxPrefabSlots: "1-16", // this decides how many strategy presets you store. Cannot be changed (2 by default)
  maxCurvePoints: "", // 16 by default
});

//// Send the instructions (group into transactions as needed)
// ...

With default parameters the CurvePrefabs account is ~15 KB, so two allocate instructions are returned (Solana’s single-instruction realloc limit is 10 KB). Send the allocates first, then the initialize.

setPoolState

Pools are initialised by default as Reject Swaps. This is done to deposit funds to prevent indexing from aggregators

pool.setPoolState(authority, { newState: PoolState.Paused });

//// Send the instructions

Param	Description
`params.Initialized`	Pool is live and will be indexed by aggregators
`params.Paused`	All operations are paused in the pool
`params.RejectSwaps`	Swaps are rejected, but the user can perform all other actions

Depositing Funds

Build a deposit instruction.

const ix = pool.deposit(user, {
  amountX: 1_000_000n,
  amountY: 2_000_000n,
  expiration: 418052063, //optional parameter
});

Param	Type	Description
`user`	`PublicKey`	The user’s wallet
`params.amountX`	`bigint`	Amount of token X to deposit (in atoms)
`params.amountY`	`bigint`	Amount of token Y to deposit (in atoms)
`params.expiration?`	`number`	Optional slot expiration

Withdraw

Build a withdraw instruction.

const ix = pool.withdraw(user, {
  amountX: 500_000n,
  amountY: 1_000_000n,
  expiration: 418052063, //optional parameter
});