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Version banner. All demos target @raydium-io/raydium-sdk-v2@0.2.42-alpha against Solana mainnet-beta, verified 2026-04. The SDK dispatches v3 / v5 / v6 internally based on the farm’s program owner; examples below assume a v6 farm. See reference/program-addresses for the three program IDs.

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Setup

Demos here mirror files in raydium-sdk-V2-demo/src/farm. Bootstrap follows the demo repo’s config.ts.template: 
import { Connection, Keypair, clusterApiUrl, PublicKey } from "@solana/web3.js";
import { Raydium, TxVersion } from "@raydium-io/raydium-sdk-v2";
import BN from "bn.js";
import fs from "node:fs";

const connection = new Connection(process.env.RPC_URL ?? clusterApiUrl("mainnet-beta"));
const owner = Keypair.fromSecretKey(
  new Uint8Array(JSON.parse(fs.readFileSync(process.env.KEYPAIR!, "utf8"))),
);
const raydium = await Raydium.load({
  owner,
  connection,
  cluster: "mainnet",
  disableFeatureCheck: true,
  blockhashCommitment: "finalized",
});
export const txVersion = TxVersion.V0;

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Fetch a farm by id

const farmId = new PublicKey("<FARM_ID>");

const farm = await raydium.farm.getFarmById({ farmId });
console.log("Staking mint:", farm.symbolMint.toBase58());
console.log("Total staked:", farm.totalStaked.toString());
console.log("Rewards:");
for (const r of farm.rewardInfos) {
  console.log(
    "  -", r.mint.toBase58(),
    "rate(1e-" + r.decimals + "/s):", r.perSecond.toString(),
    "open:", new Date(r.openTime * 1000).toISOString(),
    "end: ", new Date(r.endTime * 1000).toISOString(),
  );
}
getFarmById pulls FarmState off-chain, decodes per program version, and normalizes the fixed-point emission rate into a plain Decimal per second.

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Stake LP tokens

Source: src/farm/stake.ts 
const amount = new BN(1_000_000_000);   // 1 LP (assuming 9 decimals)

const { execute } = await raydium.farm.deposit({
  farmInfo: farm,
  amount,
  txVersion: TxVersion.V0,
});

const { txId } = await execute({ sendAndConfirm: true });
console.log("Deposit tx:", txId);
The SDK handles the pre-settle of any pending rewards, so if this wallet already has stake in this farm, the instruction will pay out accumulated rewards to the user’s ATAs in the same transaction.

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Claim-only (harvest)

Source: src/farm/harvest.ts 
const { execute } = await raydium.farm.harvestAllRewards({
  farmInfoList: [farm],
  txVersion: TxVersion.V0,
});

await execute({ sendAndConfirm: true });
harvestAllRewards accepts a list — for UIs showing a portfolio view, batch the call. Each farm is claimed in a separate instruction within one transaction (subject to the 1232-byte size limit; for >~6 farms, split into multiple transactions). For a single farm on v6, you can also use the explicit Harvest path: 
const { execute } = await raydium.farm.withdraw({
  farmInfo: farm,
  amount: new BN(0),        // 0 = harvest-only path, even on v6
  txVersion: TxVersion.V0,
});
await execute({ sendAndConfirm: true });
On v3 and v5 the amount: 0 idiom is required; the SDK dispatches it correctly.

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Unstake

Source: src/farm/unstake.ts 
const amount = new BN(500_000_000);   // 0.5 LP

const { execute } = await raydium.farm.withdraw({
  farmInfo: farm,
  amount,
  txVersion: TxVersion.V0,
});

await execute({ sendAndConfirm: true });

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Create a v6 farm

Source: src/farm/createAmmFarm.ts and editAmmFarm.ts 
import { CurveCalculator } from "@raydium-io/raydium-sdk-v2"; // optional, for APR planning

const stakingMint = new PublicKey("<LP_MINT>");       // e.g. a CPMM LP mint
const rewardMint  = new PublicKey("<REWARD_MINT>");   // e.g. your project's token

const now      = Math.floor(Date.now() / 1000);
const openTime = now + 60 * 60;                       // start in 1h
const duration = 60 * 60 * 24 * 30;                   // 30 days
const endTime  = openTime + duration;

const totalBudget = new BN(1_000_000).mul(new BN(10).pow(new BN(9))); // 1M reward tokens (9 dec)
const perSecond   = totalBudget.div(new BN(duration));                // integer, SDK lifts to Q64.64

const { execute, extInfo } = await raydium.farm.create({
  programId: /* v6 program ID, from reference/program-addresses */,
  poolInfo: { lpMint: { address: stakingMint, decimals: 9, programId: /* SPL Token */ } as any },
  rewardInfos: [
    {
      mint:           rewardMint,
      openTime:       new BN(openTime),
      endTime:        new BN(endTime),
      perSecond,
      rewardSender:   owner.publicKey,    // who pays the initial budget
      mintProgramId:  /* SPL Token or Token-2022 */,
    },
  ],
  txVersion: TxVersion.V0,
});

const { txId } = await execute({ sendAndConfirm: true });
console.log("Farm:", extInfo.farmId.toBase58(), "createTx:", txId);
Key points:
  • perSecond is the integer emission rate per second. The SDK packs it into Q64.64 before sending. For a fractional rate, scale and adjust duration.
  • The full budget (perSecond × duration) must be present in your reward ATA — create moves it into the reward vault atomically.
  • You can seed up to 5 rewards in one create call. The account list grows by (reward_mint, reward_vault, sender_ata, token_program) per extra stream; stay aware of the 1232-byte transaction size limit. For 4+ rewards, create with 1–2 and use AddReward in follow-up transactions.

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Top up an existing reward stream

const additionalDays = 30;
const extraSeconds   = 60 * 60 * 24 * additionalDays;
const extraBudget    = perSecond.mul(new BN(extraSeconds));

const { execute } = await raydium.farm.setRewards({
  farmInfo: farm,
  rewardInfos: [
    {
      rewardMint:  rewardMint,
      newEndTime:  new BN(farm.rewardInfos[0].endTime + extraSeconds),
      newPerSecond: perSecond,                   // keep same rate
      payer:        owner.publicKey,
    },
  ],
  txVersion: TxVersion.V0,
});

await execute({ sendAndConfirm: true });
setRewards extends end_time and transfers the delta budget. The instruction cannot shorten a stream, cannot lower per_second on a live stream, and cannot change the reward mint. To swap mints, wait for end_time and use AddReward on a freed slot (if any), or create a new farm.

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Restart a finished stream

const { execute } = await raydium.farm.restartRewards({
  farmInfo: farm,
  newRewardInfo: {
    rewardMint:   rewardMint,
    openTime:     new BN(Math.floor(Date.now() / 1000) + 60 * 60),
    endTime:      new BN(Math.floor(Date.now() / 1000) + 60 * 60 + 60 * 60 * 24 * 14),
    perSecond:    new BN("1000000000"),
    payer:        owner.publicKey,
  },
  txVersion: TxVersion.V0,
});

await execute({ sendAndConfirm: true });
Valid only when the target slot’s reward_state == 2 (ended). The caller must be the slot’s reward_sender (v6) or the farm owner (v5).

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Rust CPI

Unlike AMM v4, the v6 farm program ships with an Anchor crate (raydium_farm_v6) published alongside the frontend and SDK sources. A minimal Deposit sketch: 
use anchor_lang::prelude::*;
use raydium_farm_v6::{self, cpi::accounts::Deposit as RaydiumDeposit};

#[derive(Accounts)]
pub struct ProxyFarmDeposit<'info> {
    /// CHECK:
    pub farm_program: UncheckedAccount<'info>,
    #[account(mut)] pub user: Signer<'info>,
    #[account(mut)] /// CHECK:
    pub user_ledger: UncheckedAccount<'info>,
    #[account(mut)] /// CHECK:
    pub farm_state: UncheckedAccount<'info>,
    /// CHECK:
    pub farm_authority: UncheckedAccount<'info>,
    #[account(mut)] /// CHECK:
    pub staking_vault: UncheckedAccount<'info>,
    #[account(mut)] /// CHECK:
    pub user_staking_ata: UncheckedAccount<'info>,
    // Followed in remaining_accounts by (reward_vault_i, user_reward_ata_i) pairs
    // for each live reward stream on the farm.
    pub token_program: UncheckedAccount<'info>,
    pub system_program: Program<'info, System>,
}

pub fn proxy_deposit<'info>(
    ctx: Context<'_, '_, '_, 'info, ProxyFarmDeposit<'info>>,
    amount: u64,
) -> Result<()> {
    let cpi_ctx = CpiContext::new(
        ctx.accounts.farm_program.to_account_info(),
        RaydiumDeposit {
            user:             ctx.accounts.user.to_account_info(),
            user_ledger:      ctx.accounts.user_ledger.to_account_info(),
            farm_state:       ctx.accounts.farm_state.to_account_info(),
            farm_authority:   ctx.accounts.farm_authority.to_account_info(),
            staking_vault:    ctx.accounts.staking_vault.to_account_info(),
            user_staking_ata: ctx.accounts.user_staking_ata.to_account_info(),
            token_program:    ctx.accounts.token_program.to_account_info(),
            system_program:   ctx.accounts.system_program.to_account_info(),
        },
    ).with_remaining_accounts(ctx.remaining_accounts.to_vec());

    raydium_farm_v6::cpi::deposit(cpi_ctx, amount)
}
The remaining_accounts slice must match the farm’s active reward slots 1-for-1 (pairs of reward_vault_i, user_reward_ata_i in index order). Omitting or misordering these produces a silent mis-accounting — the program will transfer the wrong amount.

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Pitfalls

  • Forgetting to claim before withdrawing. Harmless — Withdraw settles pending rewards first. But if your UI shows “claim” separately from “withdraw”, the user may think there is still something to claim after a Withdraw. There is not; everything accrued up to that point was paid out.
  • total_staked = 0 during emissions. Emissions accrued while nothing was staked are forfeited (the reward_per_share update formula divides by 0 and the program skips the update). For programs with scheduled open_time, run a “seed stake” at open_time to avoid this.
  • Token-2022 transfer fees. On v6 farms with Token-2022 reward mints, the transfer fee applies on emit (vault → user). Factor this into APR quotes.
  • Small per_second on v5. v5’s u64 rate means any per_second < 1 token-unit per second (on mints with ≥9 decimals this is often the desired rate) cannot be expressed — the stream rate rounds to 0 and the farm emits nothing. Use v6.

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Where to go next

Sources: