diff --git a/packages/api/examples/utility/custom-data.ts b/packages/api/examples/utility/custom-data.ts
index 55be9ce0..d03e5c63 100644
--- a/packages/api/examples/utility/custom-data.ts
+++ b/packages/api/examples/utility/custom-data.ts
@@ -32,45 +32,46 @@ import * as common from '@protocolink/common';
 //   fields: CustomDataFields;
 // }
 
-(async () => {
-  const chainId = 1;
-  const account = '0xaAaAaAaaAaAaAaaAaAAAAAAAAaaaAaAaAaaAaaAa';
+// TODO: unskip this after we set up 1inch API v5.2 (The public Swap API api.1inch.io is deprecated.)
+// (async () => {
+//   const chainId = 1;
+//   const account = '0xaAaAaAaaAaAaAaaAaAAAAAAAAaaaAaAaAaaAaaAa';
 
-  // 1. get quotation from 1inch api
-  const fromToken = {
-    chainId: 1,
-    address: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48',
-    decimals: 6,
-    symbol: 'USDC',
-    name: 'USD Coin',
-  };
-  const toToken = {
-    chainId: 1,
-    address: '0x6B175474E89094C44Da98b954EedeAC495271d0F',
-    decimals: 18,
-    symbol: 'DAI',
-    name: 'Dai Stablecoin',
-  };
-  const input = new common.TokenAmount(fromToken, '100');
+//   // 1. get quotation from 1inch api
+//   const fromToken = {
+//     chainId: 1,
+//     address: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48',
+//     decimals: 6,
+//     symbol: 'USDC',
+//     name: 'USD Coin',
+//   };
+//   const toToken = {
+//     chainId: 1,
+//     address: '0x6B175474E89094C44Da98b954EedeAC495271d0F',
+//     decimals: 18,
+//     symbol: 'DAI',
+//     name: 'Dai Stablecoin',
+//   };
+//   const input = new common.TokenAmount(fromToken, '100');
 
-  const { data } = await axios.get(`https://api.1inch.io/v5.0/${chainId}/swap`, {
-    params: {
-      fromTokenAddress: fromToken.address,
-      toTokenAddress: toToken.address,
-      amount: input.amountWei.toString(),
-      fromAddress: account,
-      slippage: 1,
-      disableEstimate: true,
-    },
-  });
-  console.log('data :>> ', JSON.stringify(data));
-  const output = new common.TokenAmount(toToken).setWei(data.toTokenAmount);
+//   const { data } = await axios.get(`https://api.1inch.io/v5.0/${chainId}/swap`, {
+//     params: {
+//       fromTokenAddress: fromToken.address,
+//       toTokenAddress: toToken.address,
+//       amount: input.amountWei.toString(),
+//       fromAddress: account,
+//       slippage: 1,
+//       disableEstimate: true,
+//     },
+//   });
+//   console.log('data :>> ', JSON.stringify(data));
+//   const output = new common.TokenAmount(toToken).setWei(data.toTokenAmount);
 
-  const customDataLogic = await api.protocols.utility.newCustomDataLogic({
-    inputs: [input],
-    outputs: [output],
-    to: data.tx.to,
-    data: data.tx.data,
-  });
-  console.log('customDataLogic :>> ', JSON.stringify(customDataLogic, null, 2));
-})();
+//   const customDataLogic = await api.protocols.utility.newCustomDataLogic({
+//     inputs: [input],
+//     outputs: [output],
+//     to: data.tx.to,
+//     data: data.tx.data,
+//   });
+//   console.log('customDataLogic :>> ', JSON.stringify(customDataLogic, null, 2));
+// })();
diff --git a/packages/api/package.json b/packages/api/package.json
index fba35452..57e67b6c 100644
--- a/packages/api/package.json
+++ b/packages/api/package.json
@@ -28,7 +28,7 @@
   "dependencies": {
     "@protocolink/common": "^0.3.0",
     "@protocolink/core": "^0.4.0",
-    "@protocolink/logics": "^0.4.0",
+    "@protocolink/logics": "^0.4.1",
     "@types/lodash": "^4.14.195",
     "@types/uuid": "^9.0.2",
     "@uniswap/permit2-sdk": "^1.2.0",
diff --git a/packages/api/src/protocols/index.ts b/packages/api/src/protocols/index.ts
index 5be86908..3326a546 100644
--- a/packages/api/src/protocols/index.ts
+++ b/packages/api/src/protocols/index.ts
@@ -3,6 +3,7 @@ export * as aavev3 from './aave-v3';
 export * as balancerv2 from './balancer-v2';
 export * as compoundv3 from './compound-v3';
 export * as paraswapv5 from './paraswap-v5';
+export * as radiantv2 from './radiant-v2';
 export * as syncswap from './syncswap';
 export * as uniswapv3 from './uniswap-v3';
 export * as utility from './utility';
diff --git a/packages/api/src/protocols/radiant-v2/borrow.ts b/packages/api/src/protocols/radiant-v2/borrow.ts
new file mode 100644
index 00000000..bb3ec651
--- /dev/null
+++ b/packages/api/src/protocols/radiant-v2/borrow.ts
@@ -0,0 +1,16 @@
+import { Logic } from 'src/types';
+import * as common from '@protocolink/common';
+import { getProtocolTokenList } from 'src/api';
+import * as logics from '@protocolink/logics';
+
+export type BorrowFields = common.Declasifying<logics.radiantv2.BorrowLogicFields>;
+
+export type BorrowLogic = Logic<BorrowFields>;
+
+export async function getBorrowTokenList(chainId: number): Promise<logics.radiantv2.BorrowLogicTokenList> {
+  return getProtocolTokenList(chainId, logics.radiantv2.BorrowLogic.rid);
+}
+
+export function newBorrowLogic(fields: BorrowFields): BorrowLogic {
+  return { rid: logics.radiantv2.BorrowLogic.rid, fields };
+}
diff --git a/packages/api/src/protocols/radiant-v2/deposit.ts b/packages/api/src/protocols/radiant-v2/deposit.ts
new file mode 100644
index 00000000..69aa0e60
--- /dev/null
+++ b/packages/api/src/protocols/radiant-v2/deposit.ts
@@ -0,0 +1,25 @@
+import { Logic } from 'src/types';
+import * as common from '@protocolink/common';
+import { getProtocolTokenList, quote } from 'src/api';
+import * as logics from '@protocolink/logics';
+
+export type DepositParams = common.Declasifying<logics.radiantv2.DepositLogicParams>;
+
+export type DepositFields = common.Declasifying<logics.radiantv2.DepositLogicFields>;
+
+export type DepositLogic = Logic<DepositFields>;
+
+export async function getDepositTokenList(chainId: number): Promise<logics.radiantv2.DepositLogicTokenList> {
+  return getProtocolTokenList(chainId, logics.radiantv2.DepositLogic.rid);
+}
+
+export async function getDepositQuotation(
+  chainId: number,
+  params: DepositParams
+): Promise<logics.radiantv2.DepositLogicFields> {
+  return quote(chainId, logics.radiantv2.DepositLogic.rid, params);
+}
+
+export function newDepositLogic(fields: DepositFields): DepositLogic {
+  return { rid: logics.radiantv2.DepositLogic.rid, fields };
+}
diff --git a/packages/api/src/protocols/radiant-v2/flash-loan.ts b/packages/api/src/protocols/radiant-v2/flash-loan.ts
new file mode 100644
index 00000000..5f9fa5a9
--- /dev/null
+++ b/packages/api/src/protocols/radiant-v2/flash-loan.ts
@@ -0,0 +1,27 @@
+import { FlashLoanFields, FlashLoanLogic } from 'src/types';
+import * as common from '@protocolink/common';
+import { getProtocolTokenList, quote } from 'src/api';
+import * as logics from '@protocolink/logics';
+import { v4 as uuid } from 'uuid';
+
+export type FlashLoanParams = common.Declasifying<logics.radiantv2.FlashLoanLogicParams>;
+
+export async function getFlashLoanTokenList(chainId: number): Promise<logics.radiantv2.FlashLoanLogicTokenList> {
+  return getProtocolTokenList(chainId, logics.radiantv2.FlashLoanLogic.rid);
+}
+
+export async function getFlashLoanQuotation(
+  chainId: number,
+  params: FlashLoanParams
+): Promise<logics.radiantv2.FlashLoanLogicQuotation> {
+  return quote(chainId, logics.radiantv2.FlashLoanLogic.rid, params);
+}
+
+export function newFlashLoanLogic(fields: FlashLoanFields): FlashLoanLogic {
+  return { rid: logics.radiantv2.FlashLoanLogic.rid, fields };
+}
+
+export function newFlashLoanLogicPair(loans: FlashLoanFields['loans']): [FlashLoanLogic, FlashLoanLogic] {
+  const id = uuid();
+  return [newFlashLoanLogic({ id, loans, isLoan: true }), newFlashLoanLogic({ id, loans, isLoan: false })];
+}
diff --git a/packages/api/src/protocols/radiant-v2/index.ts b/packages/api/src/protocols/radiant-v2/index.ts
new file mode 100644
index 00000000..95be47c4
--- /dev/null
+++ b/packages/api/src/protocols/radiant-v2/index.ts
@@ -0,0 +1,5 @@
+export * from './borrow';
+export * from './deposit';
+export * from './flash-loan';
+export * from './repay';
+export * from './withdraw';
diff --git a/packages/api/src/protocols/radiant-v2/repay.ts b/packages/api/src/protocols/radiant-v2/repay.ts
new file mode 100644
index 00000000..d46e4595
--- /dev/null
+++ b/packages/api/src/protocols/radiant-v2/repay.ts
@@ -0,0 +1,25 @@
+import { Logic } from 'src/types';
+import * as common from '@protocolink/common';
+import { getProtocolTokenList, quote } from 'src/api';
+import * as logics from '@protocolink/logics';
+
+export type RepayParams = common.Declasifying<logics.radiantv2.RepayLogicParams>;
+
+export type RepayFields = common.Declasifying<logics.radiantv2.RepayLogicFields>;
+
+export type RepayLogic = Logic<RepayFields>;
+
+export async function getRepayTokenList(chainId: number): Promise<logics.radiantv2.RepayLogicTokenList> {
+  return getProtocolTokenList(chainId, logics.radiantv2.RepayLogic.rid);
+}
+
+export async function getRepayQuotation(
+  chainId: number,
+  params: RepayParams
+): Promise<logics.radiantv2.RepayLogicFields> {
+  return quote(chainId, logics.radiantv2.RepayLogic.rid, params);
+}
+
+export function newRepayLogic(fields: RepayFields): RepayLogic {
+  return { rid: logics.radiantv2.RepayLogic.rid, fields };
+}
diff --git a/packages/api/src/protocols/radiant-v2/withdraw.ts b/packages/api/src/protocols/radiant-v2/withdraw.ts
new file mode 100644
index 00000000..88e69469
--- /dev/null
+++ b/packages/api/src/protocols/radiant-v2/withdraw.ts
@@ -0,0 +1,25 @@
+import { Logic } from 'src/types';
+import * as common from '@protocolink/common';
+import { getProtocolTokenList, quote } from 'src/api';
+import * as logics from '@protocolink/logics';
+
+export type WithdrawParams = common.Declasifying<logics.radiantv2.WithdrawLogicParams>;
+
+export type WithdrawFields = common.Declasifying<logics.radiantv2.WithdrawLogicFields>;
+
+export type WithdrawLogic = Logic<WithdrawFields>;
+
+export async function getWithdrawTokenList(chainId: number): Promise<logics.radiantv2.WithdrawLogicTokenList> {
+  return getProtocolTokenList(chainId, logics.radiantv2.WithdrawLogic.rid);
+}
+
+export async function getWithdrawQuotation(
+  chainId: number,
+  params: WithdrawParams
+): Promise<logics.radiantv2.WithdrawLogicFields> {
+  return quote(chainId, logics.radiantv2.WithdrawLogic.rid, params);
+}
+
+export function newWithdrawLogic(fields: WithdrawFields): WithdrawLogic {
+  return { rid: logics.radiantv2.WithdrawLogic.rid, fields };
+}
diff --git a/yarn.lock b/yarn.lock
index 57eaae91..79c37db2 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1080,10 +1080,10 @@
     node-addon-api "^3.2.1"
     node-gyp-build "^4.3.0"
 
-"@protocolink/logics@^0.4.0":
-  version "0.4.0"
-  resolved "https://registry.yarnpkg.com/@protocolink/logics/-/logics-0.4.0.tgz#a58c685daf64c0279d005e45673ae2e246f0c01f"
-  integrity sha512-k79ztS1nNtQXv5+KzUFeVQkqYoPMPMU7o147mEb43jVPd+jgzv3OGuZsLfAGD8+QGD4Kx72ecDKH5yTXA9TK2A==
+"@protocolink/logics@^0.4.1":
+  version "0.4.1"
+  resolved "https://registry.yarnpkg.com/@protocolink/logics/-/logics-0.4.1.tgz#cdc9f7e2b7c4fba66c260231d447cc58b5984cd6"
+  integrity sha512-RQf8sYWuefsxU5Nk/euFASR3UTa61IMqKllRZZSk+9L1/megh4swnyFWyBbx13XjAe3wcaXF5SGjzlNVp4EZfQ==
   dependencies:
     "@paraswap/sdk" "^6.2.2"
     "@protocolink/common" "^0.3.0"