Blue House

Blue House is a Solana program that provides a unified interface for performing swaps across multiple decentralized exchanges (DEXes). Instead of implementing each market individually in your own program or trading bot, you can simply call Blue House — either directly in a transaction or through a CPI (cross-program invocation).

Program ID

b1225DYKeTyLGd4SrNZFPcgzCC76Q9qniud7XgwB7C4

🔄 Unified Swaps — One interface for 15+ Solana DEXs and protocols

⚡ Low Overhead — Minimal abstractions to preserve performance

🛠 Extensible — Easily add support for more markets in the future

Base Accounts

console         wallet           0         tokenamint     1         tokenaata      2         token_program    3         sys_program      4         ata_program      5         tokenbmint     6         tokenbprogram  7         tokenbata      8

Test

#[test] fn swap() {     // --- 1. Connect to Solana RPC ---     // Using mainnet-beta endpoint to fetch real accounts/state     let rpc_client = RpcClient::new("https://api.mainnet-beta.solana.com ");

// --- 2. Spin up a local LiteSVM instance ---     // This acts as a lightweight local Solana VM where we can hydrate accounts     // and simulate transactions against them.     let mut litesvm = build_svm().unwrap();     // --- 3. Fetch wallet + base token accounts ---     let baseaccounts = fetchbaseaccounts(&litesvm, &rpcclient);
// --- 4. Define market-specific accounts (Meteora DAMM v2) ---     let pooladdress = Pubkey::fromstr_const("2mZ2VBiG8uPX6kza6WBHxcW5KcwmDvcjyXJctKVsmjSq");     let poolauth = Pubkey::fromstr_const("HLnpSz9h2S4hiLQ43rnSD9XkcUThA7B8hQMKmDaiTLcC");     let eventauth = Pubkey::fromstr_const("3rmHSu74h1ZcmAisVcWerTCiRDQbUrBKmcwptYGjHfet");
// --- 5. Fetch pool account data from RPC ---     let pool = rpc_client         .getaccount(&Pubkey::fromstrconst(&pooladdress.to_string()))         .unwrap();     let data = pool.data;
// Extract vault accounts (base & quote)     let basevault = Pubkey::newfromarray(data[232..264].tryinto().unwrap());     let quotevault = Pubkey::newfromarray(data[264..296].tryinto().unwrap());
// --- 6. Fetch and hydrate market accounts ---     let marketaccounts = fetchmarket_accounts(         vec![pooladdress, poolauth, eventauth, basevault, quote_vault],         &rpc_client,     );
// Hydrate LiteSVM with accounts     hydratesvm(&mut litesvm, baseaccounts);     hydratesvm(&mut litesvm, marketaccounts);
// --- 7. Prepare transaction account metas ---     let mut accounts = getbaseaccounts(&rpc_client);     accounts.extend([         AccountMeta::newreadonly(DAMMV2_ID, false),         AccountMeta::newreadonly(eventauth, false),         AccountMeta::newreadonly(poolauth, false),         AccountMeta::new(pool_address, false),         AccountMeta::new(base_vault, false),         AccountMeta::new(quote_vault, false),     ]);
// --- 8. Encode instruction data ---     // SwapData { amountin: 10000000, amountout: 0, atob: false }     let mut data = Vec::with_capacity(17);     data.extendfromslice(&10000000u64.tolebytes()); // amount_in     data.extendfromslice(&0u64.tolebytes()); // amount_out     data.push(0u8); // atob = false
// --- 9. Execute transaction in LiteSVM ---     execute_transaction(&mut litesvm, accounts, data); }

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