SPL Token Swap IDL

SPL Token Swap is the reference AMM implementation on Solana. Provides constant product, constant price, and offset curve swapping for any SPL token pair with configurable fees.

  • spl
  • v3.0.0
  • Core / Standard

Program address

SwaPpA9LAaLfeLi3a68M4DjnLqgtticKg6CnyNwgAC8
A quiet stack of pagesAn abstract drawing of light on the page's dark ground. A neat stack of thin, solid pages, the top one lit, with faint streams of light drifting toward it from the left.A quiet stack of pagesAn abstract drawing of light on the page's dark ground. A neat stack of thin, solid pages, the top one lit, with faint streams of light drifting toward it from the left.
Instructions
6
Accounts
6
Events
0
Types
1

What the program exposes

Instructions 6

  • initialize
  • swap
  • depositAllTokenTypes
  • withdrawAllTokenTypes
  • depositSingleTokenTypeExactAmountIn
  • withdrawSingleTokenTypeExactAmountOut

Accounts 6

  • Fees
  • SwapCurve
  • SwapV1
  • OffsetCurve
  • ConstantProductCurve
  • ConstantPriceCurve

Use it in your code

Load the SPL Token Swap IDL with Anchor in TypeScript, Rust or Python.

import { Connection, PublicKey } from "@solana/web3.js";
import { Program, AnchorProvider, Idl } from "@coral-xyz/anchor";

// Load the SPL Token Swap IDL
import idl from "./spl token swap.json";

const PROGRAM_ID = new PublicKey("SwaPpA9LAaLfeLi3a68M4DjnLqgtticKg6CnyNwgAC8");

// Set up the provider and program
const connection = new Connection("https://api.mainnet-beta.solana.com");
const provider = new AnchorProvider(connection, wallet, {
  commitment: "confirmed",
});
const program = new Program(idl as Idl, provider);

// Fetch and decode an account
const accountData = await program.account.sPL_Token_Swap
  .fetch(accountPublicKey);
console.log("Account data:", accountData);

// Build and send an instruction
const tx = await program.methods
  .initialize(/* ...args */)
  .accounts({
    /* ...required accounts */
  })
  .rpc();
console.log("Transaction signature:", tx);

The JSON

The first 30 lines of spl token swap.json.

spl token swap.json
{
  "version": "3.0.0",
  "name": "spl_token_swap",
  "instructions": [
    {
      "name": "initialize",
      "accounts": [
        {
          "name": "swap",
          "isMut": true,
          "isSigner": true
        },
        {
          "name": "authority",
          "isMut": false,
          "isSigner": false
        },
        {
          "name": "tokenA",
          "isMut": false,
          "isSigner": false
        },
        {
          "name": "tokenB",
          "isMut": false,
          "isSigner": false
        },
        {
          "name": "pool",
          "isMut": true,
...

Frequently asked questions

What is the SPL Token Swap IDL?

The SPL Token Swap IDL (Interface Definition Language) is a JSON schema that describes the on-chain program interface for the SPL Token Swap smart contract on Solana. It defines all available instructions, account structures, events, and types needed to interact with the program. This one has 6 instructions, 6 account types, 0 events and 1 type definitions.

How do I use the SPL Token Swap IDL in my project?

You can use the SPL Token Swap IDL with Anchor framework clients in TypeScript (@coral-xyz/anchor), Rust (anchor-client), or Python (anchorpy). Download the JSON file, import it in your project, and use it to create a Program instance that can call instructions and decode accounts.

What is the SPL Token Swap program address on Solana?

The SPL Token Swap program is deployed at address SwaPpA9LAaLfeLi3a68M4DjnLqgtticKg6CnyNwgAC8 on Solana mainnet.

What version of the SPL Token Swap IDL is this?

This is version 3.0.0 of the SPL Token Swap IDL. IDL versions follow program deployments and change as the protocol evolves, so check it against the program on-chain before you integrate.

Build on SPL Token Swap with AllenHark

Stream the program's accounts and transactions with Yellowstone gRPC, read its state over Solana RPC, or see its transactions before the block is built with ShredStream. To trade against it, try the trading bots or the PumpFun sniper.

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