> ## 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.

# Blend Single-Asset Pools

> Supply XLM or BLUSDC from your margin account to Blend and earn Blend's supply APY.

Blend supply moves **XLM** or **BLUSDC** from your margin account into Blend's testnet lending pool. Blend gives back **b-tokens** (for example bXLM), which stay in your margin account and count as collateral.

![Farm XLM Supply Blend pool page with Supply APY, Borrow APY, Utilization Rate and Total Pool Supply, a My Supply Position chart showing 102.6614 XLM supplied at 1 bXLM = 2.5160 XLM with position value \$17.42 and receipt balance 40.8028 bXLM, and a Supply form for 10 XLM showing Network Stellar Testnet, Source 10.0000 borrow, Deposit 102.6614 to 112.6614, APY and projected monthly and yearly earnings, with a Supply XLM to Blend button](https://mintcdn.com/vannafinance/nTvFas2wipJFpeKy/images/stellar/farm/farm-blend-supply.png?fit=max\&auto=format\&n=nTvFas2wipJFpeKy\&q=85\&s=8ab2f36264e5025ca6d517ddef5b89e8)

The Blend XLM pool page: your supply position on the left, the Supply form on the right with the source and projected earnings. Click the image to zoom.

## Supply

**1. Open the pool**

On **Farm → Lending/Single Assets**, click **XLM** or **BLUSDC**.

**2. Enter an amount**

On the **Supply** tab, type an amount or use the % chips. **Margin** shows what your margin account holds.

**3. Check the summary**

**Source** shows how much comes from borrowed funds and how much from your own collateral (borrowed funds are used first). You also see your deposit before → after, the APY and projected earnings.

**4. Sign**

Click **Supply XLM to Blend** (or BLUSDC) and approve.

## Withdraw

On the **Withdraw** tab, enter the amount in **b-tokens** (what Blend burns). The app converts it to the underlying at the live b-rate and shows what you'll get. A 100% withdrawal re-reads your balance right before sending so nothing is left behind. Click **Withdraw ... to Margin Account**.

Withdrawn tokens go back to your **margin account**, not your wallet. Repaying a loan or transferring to your wallet is a separate step.

## Good to know

* **b-tokens grow in value.** 1 bXLM is worth more than 1 XLM and keeps rising as Blend borrowers pay interest, so your receipt count is smaller than the amount supplied.
* **Blend's rates are Blend's.** On testnet they can be extreme. A high supply APY doesn't guarantee a positive spread after your Vanna borrow rate.
* **Exits can be limited** by Blend's own liquidity.

See [Repay](https://docs.vanna.finance/stellar/guides/margin/repay.md) and the [Blend Controller](https://docs.vanna.finance/stellar/developers/contracts/blend-controller.md).


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