# Debt Swap

**Step 1**

[Installation](https://docs.instadapp.io/installation) or just use your browser console.

**Step 2**

[Setup Account](https://docs.instadapp.io/setup)

**Step 3**

Trigger the following uniquely designed spells to fulfill this use case. Check [this section](https://docs.instadapp.io/cast) for generic details around casting spells.

The DSA will cast the spells across the [Compound](https://docs.instadapp.io/connectors/compound/), [OasisDEX](https://docs.instadapp.io/connectors/oasis/) and [Instapool](https://docs.instadapp.io/connectors/instapool/) connectors in the specified sequence.

#### USDC Debt -> DAI Debt <a href="#usdc-debt---dai-debt" id="usdc-debt---dai-debt"></a>

**Benefits**

* When DAI > $1. Arbitrage benefit due to price difference of DAI & USDC.
* Help make DAI stable.

**Recipe**

1. **Instapool**: borrow DAI
2. **OasisDEX**: Swap DAI for USDC
3. **Compound**: Payback USDC
4. **Compound**: Borrow DAI
5. **Instapool**: return DAI

**Requirements**

* User must have a some debt in USDC.

```
let borrowAmount = 20; // 20 DAI
let borrowAmtInWei = dsa.tokens.fromDecimal(borrowAmount, "dai"); // borrow flash loan and swap via OasisDEX

let slippage = 0.1; // 0.1% slippage.
let dai_address = dsa.tokens.info.dai.address
let usdc_address = dsa.tokens.info.usdc.address

let buyAmount = await dsa.oasis.getBuyAmount("USDC", "DAI", borrowAmount, slippage);

let spells = dsa.Spell();

spells.add({
  connector: "instapool",
  method: "flashBorrow",
  args: [dai_address, borrowAmtInWei, 0, 0]
});

spells.add({
  connector: "oasis",
  method: "sell",
  args: [usdc_address, dai_address, borrowAmtInWei, buyAmount.unitAmt, 0, "423"] // setting USDC amount with id 423
});

spells.add({
  connector: "compound",
  method: "payback",
  args: [usdc_address, 0, "423", 0] // get Payback amount with id 423
});

spells.add({
  connector: "compound",
  method: "borrow",
  args: [dai_address, borrowAmtInWei, 0, 0]
});

spells.add({
  connector: "instapool",
  method: "flashPayback",
  args: [dai_address, 0, 0]
});

dsa.cast(spells).then(console.log)
```

#### DAI Debt -> USDC Debt <a href="#dai-debt---usdc-debt" id="dai-debt---usdc-debt"></a>

**Benefits**

* When DAI < $1. Arbitrage benefit due to price difference of DAI & USDC.
* Help make DAI stable.

**Recipe**

1. **Instapool**: borrow USDC
2. **OasisDEX**: Swap USDC for DAI
3. **Compound**: Payback DAI
4. **Compound**: Borrow USDC
5. **Instapool**: return USDC

**Requirements**

* User must have a some debt in DAI.

```
let borrowAmount = 20; // 20 USDC
let borrowAmtInWei = dsa.tokens.fromDecimal(borrowAmount, "usdc"); // borrow flash loan and swap via OasisDEX

let slippage = 0.2; // 0.2% slippage.
let dai_address = dsa.tokens.info.dai.address
let usdc_address = dsa.tokens.info.usdc.address

let buyAmount = await dsa.oasis.getBuyAmount("DAI", "USDC", borrowAmount, slippage);

let spells = dsa.Spell();

spells.add({
  connector: "instapool",
  method: "flashBorrow",
  args: [usdc_address, borrowAmtInWei, 0, 0]
});

spells.add({
  connector: "oasis",
  method: "sell",
  args: [dai_address, usdc_address, borrowAmtInWei, buyAmount.unitAmt, 0, "924"] // setting DAI amount with id 924
});

spells.add({
  connector: "compound",
  method: "payback",
  args: [dai_address, 0, "924", 0] // get Payback amount with id 924
});

spells.add({
  connector: "compound",
  method: "borrow",
  args: [usdc_address, borrowAmtInWei, 0, 0]
});

spells.add({
  connector: "instapool",
  method: "flashPayback",
  args: [usdc_address, 0, 0]
});

dsa.cast(spells).then(console.log)
```