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

# Developer Overview

> Integrate with the Vanna Solana program and the Next.js fork app.

This reference describes `Protocol_V1_Solana` (`vanna_lending`) and `Backend-Solana` as they run on the Surfpool mainnet fork. Program ID:

```text theme={null}
BZ812nUv4Qhr2p1JVgmoJGjYTGk1brAXckyhFSCNH3Zg
```

Start with [Architecture](/developers/architecture), [Configured Accounts](/developers/deployed-contracts), and [Math Reference](/developers/math-reference).

## Repository map

| Path                                                  | Responsibility                                                         |
| ----------------------------------------------------- | ---------------------------------------------------------------------- |
| `Protocol_V1_Solana/programs/vanna_lending`           | Anchor program: lending, margin, Lite, swap, liquidation               |
| `Protocol_V1_Solana/programs/vanna_lending/src/tests` | LiteSVM lifecycle, liquidation, security                               |
| `Backend-Solana/app`                                  | Next.js routes: Earn, Margin/Perps, Swap, Farm, Portfolio, faucet APIs |
| `Backend-Solana/lib/solana`                           | PDAs, program client, Jupiter, Pyth, Lite, long/short                  |
| `Backend-Solana/idl/vanna_lending.json`               | IDL consumed by the app                                                |
| `Backend-Solana/docs/HOSTED_SURFPOOL_SETUP.md`        | VM / Caddy / snapshot runbook                                          |

## Current scope

Seven reserves (SOL, USDC, TSLAx, GOOGLx, AAPLx, ANTHROPIC, OPENAI). Cross-margin accounts. Jupiter margin swaps. Long/short recipes. Lite/Kamino. Fork faucet. Pyth (or fork price refresh).

There is no published `@vanna/sdk` package. Copy the PDA helpers and instruction builders from `Backend-Solana/lib/solana`.

See [Review Scope](/developers/review-scope) for what is and is not claimed.