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

# Integrate Lending

> Supply to and redeem from a Vanna pool from another client.

**1. Derive accounts**

`asset_config`, `reserve`, `share_mint`, the reserve's liquidity vault, the user's underlying ATA, and the user's share ATA (classic SPL Token).

**2. Wrap SOL**

If the mint is wSOL, wrap native SOL first. The program only sees wSOL.

**3. Refresh and quote**

Read the `Reserve`. If `last_update_timestamp` is old, include `public_refresh_reserve` or project accrual off-chain so the quote matches.

**4. Supply**

Call `lender_supply(assets, min_shares_out)` with `min_shares_out` from the quoted rate minus slippage.

**5. Redeem**

Call `lender_redeem(shares, min_assets_out)`. Payouts are limited to `accounted_liquidity_assets − accrued_protocol_fees`, so check available cash first.

Pools exist for USDC, USDT and SOL. Supply is subject to `supply_cap`, the operating mode, and the reserve status.

vTokens are **not** margin collateral. To use supplied funds as collateral, redeem first and deposit the underlying.

App reference: `lib/solana/lend.ts` (`supply`, `redeem`, `previewSupplyShares`).


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