> ## Documentation Index
> Fetch the complete documentation index at: https://docs.raydium.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Swap from CLI

> Paste-and-go Node script that quotes and executes a CPMM swap. Configure four env vars and run it.

<Info>
  **What this does.** Loads a CPMM pool from RPC, quotes a swap with 0.5% slippage, builds the transaction, signs with your keypair, and submits it. End-to-end in \~30 lines.
</Info>

## Setup

Make sure you've read the [Quick start prerequisites](/quick-start) and have `RPC_URL`, `KEYPAIR`, and the deps installed.

## The script

Save as `swap.mjs`:

```ts theme={null}
// swap.mjs
import { Connection, Keypair, PublicKey } from "@solana/web3.js";
import { Raydium, TxVersion, CurveCalculator } from "@raydium-io/raydium-sdk-v2";
import BN from "bn.js";
import fs from "node:fs";

// ── Config from env ──────────────────────────────────────────────
const RPC_URL    = process.env.RPC_URL    ?? "https://api.mainnet-beta.solana.com";
const KEYPAIR    = process.env.KEYPAIR    ?? `${process.env.HOME}/.config/solana/id.json`;
const POOL_ID    = process.env.POOL_ID;     // required, base58
const INPUT_MINT = process.env.INPUT_MINT;  // required, base58
const AMOUNT_RAW = process.env.AMOUNT_RAW;  // required, integer in raw units (e.g. 1_000_000_000 for 1 SOL)

if (!POOL_ID || !INPUT_MINT || !AMOUNT_RAW) {
  console.error("Set POOL_ID, INPUT_MINT, AMOUNT_RAW env vars.");
  process.exit(1);
}

// ── Setup ────────────────────────────────────────────────────────
const connection = new Connection(RPC_URL, "confirmed");
const owner = Keypair.fromSecretKey(
  new Uint8Array(JSON.parse(fs.readFileSync(KEYPAIR, "utf8"))),
);
const raydium = await Raydium.load({
  owner,
  connection,
  cluster: "mainnet",
  disableFeatureCheck: true,
  blockhashCommitment: "finalized",
});

// ── Load pool ────────────────────────────────────────────────────
const { poolInfo, poolKeys, rpcData } =
  await raydium.cpmm.getPoolInfoFromRpc(new PublicKey(POOL_ID));

const baseIn = poolInfo.mintA.address === INPUT_MINT;

// ── Quote ────────────────────────────────────────────────────────
const inputAmount = new BN(AMOUNT_RAW);
const swapResult  = CurveCalculator.swap(
  inputAmount,
  baseIn ? rpcData.baseReserve : rpcData.quoteReserve,
  baseIn ? rpcData.quoteReserve : rpcData.baseReserve,
  rpcData.configInfo.tradeFeeRate,
);

console.log(`Quote: ${inputAmount.toString()} -> ${swapResult.destinationAmountSwapped.toString()}`);
console.log(`Fee:   ${swapResult.tradeFee.toString()}`);

// ── Build and execute ────────────────────────────────────────────
const { execute } = await raydium.cpmm.swap({
  poolInfo,
  poolKeys,
  inputAmount,
  swapResult,
  slippage: 0.005, // 0.5%
  baseIn,
  txVersion: TxVersion.V0,
  computeBudgetConfig: {
    units: 250_000,
    microLamports: 50_000,
  },
});

const { txId } = await execute({ sendAndConfirm: true });
console.log(`Swap landed: https://solscan.io/tx/${txId}`);
```

## Run it

Pick any CPMM pool you have liquidity for. Example with the canonical SOL/USDC CPMM pool:

```bash theme={null}
export POOL_ID="<paste a CPMM pool ID — find one in Raydium UI's Pools tab>"
export INPUT_MINT="So11111111111111111111111111111111111111112"
export AMOUNT_RAW="10000000"   # 0.01 SOL

node swap.mjs
```

Expected output:

```
Quote: 10000000 -> 1640000
Fee:   25000
Swap landed: https://solscan.io/tx/4Z9...
```

## What just happened

1. **`Raydium.load`** initialised the SDK — fetched the global config, set up your wallet context.
2. **`getPoolInfoFromRpc`** pulled the live pool state directly from RPC (not from the API cache). For high-value swaps you always want fresh state.
3. **`CurveCalculator.swap`** computed the constant-product output net of the pool's fee. This is the same math the program runs on-chain, so you can compare quotes off- and on-chain.
4. **`raydium.cpmm.swap`** built the transaction with V0 format (address lookup tables enabled) and added an explicit compute-budget config. The compute-budget tip helps the tx land in busy windows.
5. **`execute({ sendAndConfirm: true })`** signed, sent, and waited for confirmation.

## Common errors

* **`Pool not found`** — Wrong `POOL_ID`, or you're pointed at the wrong cluster (mainnet pool ID against a devnet RPC, etc.).
* **`Insufficient funds for transaction`** — Your wallet doesn't have enough SOL for the swap input + fees + ATA rent.
* **`Slippage tolerance exceeded`** — The pool's price moved between quote and execution. Re-run; or raise the `slippage` parameter; or use the SDK's `computeAmountOut` which always re-fetches reserves.
* **`Token account not initialized`** — Output token's ATA didn't exist and the implicit-create instruction landed but failed for some reason; check your wallet's SOL balance and try again.

## Next

* [`sdk-api/typescript-sdk`](/sdk-api/typescript-sdk) — full SDK reference.
* [`products/cpmm/instructions`](/products/cpmm/instructions) — what the swap instruction looks like on-chain.
* [`integration-guides/priority-fee-tuning`](/integration-guides/priority-fee-tuning) — sizing `computeBudgetConfig` for production.