> For the complete documentation index, see [llms.txt](https://docs.protocolink.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.protocolink.com/compound-kit/sdk/zap-supply.md).
# Zap Supply
Continuing from[/pages/GKzgnvQUcBRDl9fzmh69#id-4.-select-an-use-case](https://docs.protocolink.com/compound-kit/sdk/pages/GKzgnvQUcBRDl9fzmh69#id-4.-select-an-use-case "mention").
## 5. Preview the Estimated Post-Zap-Supply Position & Approval Permissions
Specify the `srcToken`, `srcAmount` that the user has, along with the `destToken` which represents the base or collateral tokens the user wants to supply. Then It returns a `quotation` used for getting the estimated position. `approvals` need to be signed and submitted on-chain. `logics` is the detailed steps used for building transaction. Logics workflow is as follows:
1. Swap the source token to the base or collateral token.
2. Supply the base or collateral to the market.
import * as compoundkit from '@protocolink/compound-kit';
import * as common from '@protocolink/common';
import * as logics from '@protocolink/logics';
const chainId = common.ChainId.polygon;
const marketId = compoundkit.MarketId.USDC;
const params = {
account: '0xaAaAaAaaAaAaAaaAaAAAAAAAAaaaAaAaAaaAaaAa',
srcToken: logics.compoundv3.polygonTokens.MATIC,
srcAmount: '10',
destToken: logics.compoundv3.polygonTokens.WETH,
slippage: 100,
};
const zapSupplyQuotation = await compoundkit.getZapSupplyQuotation(chainId, marketId, params);
// {
// "quotation": {
// "destAmount": "0.003414475482347128",
// "currentPosition": {
// "utilization": "0.6649",
// "healthRate": "1.61",
// "liquidationThreshold": "0.7828",
// "supplyUSD": "0",
// "borrowUSD": "77538.38",
// "collateralUSD": "159157.49",
// "netAPR": "-0.0407"
// },
// "targetPosition": {
// "utilization": "0.6648",
// "healthRate": "1.61",
// "liquidationThreshold": "0.7828",
// "supplyUSD": "0",
// "borrowUSD": "77538.38",
// "collateralUSD": "159163.31",
// "netAPR": "-0.0407"
// }
// },
// "fees": [
// {
// "rid": "native-token",
// "feeAmount": {
// "token": {
// "chainId": 137,
// "address": "0x0000000000000000000000000000000000001010",
// "decimals": 18,
// "symbol": "MATIC",
// "name": "Matic Token"
// },
// "amount": "0.02"
// }
// }
// ],
// "approvals": [],
// "logics": [
// {
// "rid": "paraswap-v5:swap-token",
// "fields": {
// "input": {
// "token": {
// "chainId": 137,
// "address": "0x0000000000000000000000000000000000001010",
// "decimals": 18,
// "symbol": "MATIC",
// "name": "Matic Token"
// },
// "amount": "10"
// },
// "output": {
// "token": {
// "chainId": 137,
// "address": "0x7ceB23fD6bC0adD59E62ac25578270cFf1b9f619",
// "decimals": 18,
// "symbol": "WETH",
// "name": "Wrapped Ether"
// },
// "amount": "0.003414475482347128"
// },
// "slippage": 100
// }
// },
// {
// "rid": "compound-v3:supply-collateral",
// "fields": {
// "marketId": "USDC",
// "input": {
// "token": {
// "chainId": 137,
// "address": "0x7ceB23fD6bC0adD59E62ac25578270cFf1b9f619",
// "decimals": 18,
// "symbol": "WETH",
// "name": "Wrapped Ether"
// },
// "amount": "0.003414475482347128"
// },
// "balanceBps": 10000
// }
// }
// ]
// }
## 6. Obtain Transaction Data for Execution
Provides transaction data that is needed to execute this operation. Armed with the `logics` from the previous step, it generates the `to`, `data` and `value` including fees then signs and submits to finalize the operation.
If you wish to include a referral for fee sharing, you can append the `referral` property to the `routerData` object. For detailed information on using `routerData`, please refer to the [Router Data Documentation](/protocolink-sdk/api-sdk-interfaces/global-types.md#routerdata).
```typescript
import * as compoundkit from '@protocolink/compound-kit';
import * as common from '@protocolink/common';
import * as apisdk from '@protocolink/api';
const routerData: apisdk.RouterData = {
chainId: common.ChainId.polygon,
account: '0xaAaAaAaaAaAaAaaAaAAAAAAAAaaaAaAaAaaAaaAa',
logics: zapSupplyQuotation.logics,
referral: '0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB',
};
const transactionRequest = await compoundkit.buildZapSupplyTransactionRequest(routerData);
// {
// "to": "0xf4dEf6B4389eAb49dF2a7D67890810e5249B5E70",
// "data": "0x...",
// "value": "10020000000000000000"
// }
```
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