> 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-withdraw.md). # Zap Withdraw 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-Withdraw Position & Approval Permissions Specify the `srcToken`, `srcAmount` that represents the base or collateral token the user wants to withdraw, along with the `destToken` which the user wants. 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. Withdraw the base or collateral token from the market. 2. Swap the base or collateral token to the destination token. 
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.WETH,
  srcAmount: '1',
  destToken: logics.compoundv3.polygonTokens.MATIC,
  slippage: 100,
};
const zapWithdrawQuotation = await compoundkit.getZapWithdrawQuotation(chainId, marketId, params);
// {
//   "quotation": {
//     "destAmount": "2965.808167230875928853",
//     "currentPosition": {
//       "utilization": "0.7093",
//       "healthRate": "1.51",
//       "liquidationThreshold": "0.7829",
//       "supplyUSD": "0",
//       "borrowUSD": "82535.89",
//       "collateralUSD": "158778.09",
//       "netAPR": "-0.0462"
//     },
//     "targetPosition": {
//       "utilization": "-0.0008",
//       "healthRate": "1.49",
//       "liquidationThreshold": "0.7824",
//       "supplyUSD": "0",
//       "borrowUSD": "82535.89",
//       "collateralUSD": "157074.4",
//       "netAPR": "-0.0462"
//     }
//   },
//   "fees": [],
//   "approvals": [
//     {
//       "to": "0xF25212E676D1F7F89Cd72fFEe66158f541246445",
//       "data": "0x110496e5000000000000000000000000e7c086090b361c955950956105df200b20f66d700000000000000000000000000000000000000000000000000000000000000001"
//     }
//   ],
//   "logics": [
//     {
//       "rid": "compound-v3:withdraw-collateral",
//       "fields": {
//         "marketId": "USDC",
//         "output": {
//           "token": {
//             "chainId": 137,
//             "address": "0x7ceB23fD6bC0adD59E62ac25578270cFf1b9f619",
//             "decimals": 18,
//             "symbol": "WETH",
//             "name": "Wrapped Ether"
//           },
//           "amount": "1"
//         }
//       }
//     },
//     {
//       "rid": "paraswap-v5:swap-token",
//       "fields": {
//         "input": {
//           "token": {
//             "chainId": 137,
//             "address": "0x7ceB23fD6bC0adD59E62ac25578270cFf1b9f619",
//             "decimals": 18,
//             "symbol": "WETH",
//             "name": "Wrapped Ether"
//           },
//           "amount": "1"
//         },
//         "output": {
//           "token": {
//             "chainId": 137,
//             "address": "0x0000000000000000000000000000000000001010",
//             "decimals": 18,
//             "symbol": "MATIC",
//             "name": "Matic Token"
//           },
//           "amount": "2965.808167230875928853"
//         },
//         "slippage": 100
//       }
//     }
//   ]
// }
## 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: zapWithdrawQuotation.logics, referral: '0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB', }; const transactionRequest = await compoundkit.buildZapWithdrawTransactionRequest(routerData); // { // "to": "0xf4dEf6B4389eAb49dF2a7D67890810e5249B5E70", // "data": "0x...", // "value": "10020000000000000000" // } ``` --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.protocolink.com/compound-kit/sdk/zap-withdraw.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.