> For the complete documentation index, see [llms.txt](https://docs.rome.builders/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.rome.builders/id/produk/defi-composer.md).

# DeFi Composer

DeFi Composer memungkinkan vault multi-protokol bergaya Yearn yang ditulis dalam Solidity, yang menyusun berbagai protokol DeFi Solana secara atomik melalui CPI.

## Ringkasan

Satu fungsi Solidity dapat mengoordinasikan operasi di seluruh Jupiter, Kamino, Drift, Meteora, dan protokol Solana lainnya — semuanya secara atomik. Jika satu langkah gagal, seluruh transaksi dibatalkan.

```solidity
function executeStrategy(uint256 amount) external {
    // 1. Tukar 50% USDC ke SOL melalui Jupiter
    IJupiter(JUPITER).swap(USDC, SOL, amount / 2, minSolOut);

    // 2. Setorkan SOL sebagai jaminan di Kamino
    IKamino(KAMINO).deposit(SOL, solAmount);

    // 3. Pinjam USDC dengan jaminan SOL
    IKamino(KAMINO).borrow(USDC, borrowAmount);

    // 4. Buka posisi short SOL-PERP di Drift (delta hedge)
    IDrift(DRIFT).placeOrder(SOL_PERP, SHORT, size, leverage);

    // Semuanya atomik. Satu fungsi Solidity. Empat lompatan CPI.
}
```

## Mengapa Solidity untuk Komposisi DeFi?

* **Perkakas yang familier** — developer Solidity tidak perlu mempelajari Rust/Anchor
* **Ekosistem matang** — manfaatkan OpenZeppelin, perkakas audit yang sudah ada, alur kerja Hardhat/Foundry
* **Komposabilitas** — `try/catch`, modifier, dan pewarisan bekerja secara alami
* **Eksekusi atomik** — model transaksi Solana menjamin semuanya atau tidak sama sekali

## Strategi Referensi (Direncanakan)

| Strategi              | Protokol               | Deskripsi                                                            |
| --------------------- | ---------------------- | -------------------------------------------------------------------- |
| Pengoptimal Hasil SOL | Kamino, Drift          | Setor SOL, pinjam aset stabil, lindungi delta pada perps             |
| Hasil Stablecoin      | Kamino, Orca           | Sediakan likuiditas stablecoin di seluruh pool, rebalancing otomatis |
| Netral Delta          | Jupiter, Kamino, Drift | Tukar + supply + hedge untuk hasil tanpa eksposur                    |
| Arbitrase LST         | Jupiter, Marinade      | Manfaatkan perbedaan harga LST                                       |

## Status

**Dirancang** — bergantung pada Rome SDK Phase 2 (antarmuka IJupiter, IDrift, IKamino). Infrastruktur CPI inti sudah aktif; antarmuka bertipe spesifik protokol sedang dalam pengerjaan.

## Berikutnya

* [Rome SDK](/id/produk/rome-sdk.md) — antarmuka Solidity bertipe untuk program Solana
* [Panggil Solana dari EVM](/id/panduan-pengembang/call-solana-from-evm.md) — panduan CPI
* [Batasan](/id/konsep-inti/constraints.md) — batas kedalaman CPI dan anggaran komputasi


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