adding gas sponsorship

wallet-earn/.env.example

@@ -1,3 +1,4 @@
 COMPASS_WALLET_ADDRESS=<>
 PRIVATE_KEY=<>
+GAS_SPONSOR_PK=<>
 COMPASS_API_KEY=<>

wallet-earn/app/api/deposit/route.ts

@@ -13,12 +13,18 @@ export async function POST(request: Request) {
       throw new Error("Missing body parameters.");
     }
 
-    const account = privateKeyToAccount(
+    // Owner account - signs EIP-712 typed data
+    const ownerAccount = privateKeyToAccount(
       process.env.PRIVATE_KEY as `0x${string}`
     );
 
-    const walletClient = createWalletClient({
-      account,
+    // Sponsor account - pays gas and submits transaction
+    const sponsorAccount = privateKeyToAccount(
+      process.env.GAS_SPONSOR_PK as `0x${string}`
+    );
+
+    const sponsorWalletClient = createWalletClient({
+      account: sponsorAccount,
       chain: base,
       transport: http(process.env.RPC_URL),
     });
@@ -32,31 +38,69 @@ export async function POST(request: Request) {
       apiKeyAuth: process.env.COMPASS_API_KEY,
     });
 
+    // Step 1: Call earnManage with gas sponsorship enabled
     const deposit = await compassApiSDK.earn.earnManage({
-      owner: account.address,
+      owner: ownerAccount.address,
       chain: CHAIN,
       venue: {
         type: "VAULT",
         vaultAddress,
       },
       action: "DEPOSIT",
       amount,
+      gasSponsorship: true,
     });
 
-    const transaction = deposit.transaction as UnsignedTransaction;
+    // Step 2: Extract EIP-712 typed data
+    const eip712TypedData = deposit.eip712;
+
+    if (!eip712TypedData) {
+      throw new Error("No EIP-712 typed data returned from earnManage");
+    }
 
-    console.log(transaction)
+    console.log("EIP-712 Typed Data:", eip712TypedData);
+
+    // Step 3: Owner signs the EIP-712 typed data
+    // Note: SDK returns camelCase keys (safeTx, eip712Domain) but primaryType as "SafeTx"
+    // We need to normalize the types object to match what viem expects
+    const normalizedTypes = {
+      EIP712Domain: (eip712TypedData.types as any).eip712Domain,
+      SafeTx: (eip712TypedData.types as any).safeTx,
+    };
+
+    const signature = await ownerAccount.signTypedData({
+      domain: eip712TypedData.domain as any,
+      types: normalizedTypes,
+      primaryType: "SafeTx",
+      message: eip712TypedData.message as any,
+    });
 
-    if (!transaction) {
-      throw new Error("No transaction returned from earnManage");
+    console.log("Owner Signature:", signature);
+
+    // Step 4: Prepare gas-sponsored transaction
+    const sponsorGasResponse = await compassApiSDK.gasSponsorship.gasSponsorshipPrepare({
+      owner: ownerAccount.address,
+      chain: CHAIN,
+      eip712: eip712TypedData as any,
+      signature,
+      sender: sponsorAccount.address,
+    });
+
+    const sponsoredTransaction = sponsorGasResponse.transaction as UnsignedTransaction;
+
+    if (!sponsoredTransaction) {
+      throw new Error("No transaction returned from gasSponsorshipPrepare");
     }
 
-    const depositTxHash = await walletClient.sendTransaction({
-      ...(transaction as any),
-      value: BigInt(transaction.value),
-      gas: transaction.gas ? BigInt(transaction.gas) : undefined,
-      maxFeePerGas: BigInt(transaction.maxFeePerGas),
-      maxPriorityFeePerGas: BigInt(transaction.maxPriorityFeePerGas),
+    console.log("Sponsored Transaction:", sponsoredTransaction);
+
+    // Step 5: Sponsor signs and submits the transaction
+    const depositTxHash = await sponsorWalletClient.sendTransaction({
+      ...(sponsoredTransaction as any),
+      value: BigInt(sponsoredTransaction.value),
+      gas: sponsoredTransaction.gas ? BigInt(sponsoredTransaction.gas) : undefined,
+      maxFeePerGas: BigInt(sponsoredTransaction.maxFeePerGas),
+      maxPriorityFeePerGas: BigInt(sponsoredTransaction.maxPriorityFeePerGas),
     });
 
     const tx = await publicClient.waitForTransactionReceipt({

wallet-earn/app/api/withdraw/route.ts

@@ -13,12 +13,18 @@ export async function POST(request: Request) {
       throw new Error("Missing body parameters.");
     }
 
-    const account = privateKeyToAccount(
+    // Owner account - signs EIP-712 typed data
+    const ownerAccount = privateKeyToAccount(
       process.env.PRIVATE_KEY as `0x${string}`
     );
 
-    const walletClient = createWalletClient({
-      account,
+    // Sponsor account - pays gas and submits transaction
+    const sponsorAccount = privateKeyToAccount(
+      process.env.GAS_SPONSOR_PK as `0x${string}`
+    );
+
+    const sponsorWalletClient = createWalletClient({
+      account: sponsorAccount,
       chain: base,
       transport: http(process.env.RPC_URL),
     });
@@ -32,29 +38,69 @@ export async function POST(request: Request) {
       apiKeyAuth: process.env.COMPASS_API_KEY,
     });
 
+    // Step 1: Call earnManage with gas sponsorship enabled
     const withdraw = await compassApiSDK.earn.earnManage({
-      owner: account.address,
+      owner: ownerAccount.address,
       chain: CHAIN,
       venue: {
         type: "VAULT",
         vaultAddress,
       },
       action: "WITHDRAW",
       amount: isAll ? "ALL" : amount,
+      gasSponsorship: true,
+    });
+
+    // Step 2: Extract EIP-712 typed data
+    const eip712TypedData = withdraw.eip712;
+
+    if (!eip712TypedData) {
+      throw new Error("No EIP-712 typed data returned from earnManage");
+    }
+
+    console.log("EIP-712 Typed Data:", eip712TypedData);
+
+    // Step 3: Owner signs the EIP-712 typed data
+    // Note: SDK returns camelCase keys (safeTx, eip712Domain) but primaryType as "SafeTx"
+    // We need to normalize the types object to match what viem expects
+    const normalizedTypes = {
+      EIP712Domain: (eip712TypedData.types as any).eip712Domain,
+      SafeTx: (eip712TypedData.types as any).safeTx,
+    };
+
+    const signature = await ownerAccount.signTypedData({
+      domain: eip712TypedData.domain as any,
+      types: normalizedTypes,
+      primaryType: "SafeTx",
+      message: eip712TypedData.message as any,
     });
 
-    const transaction = withdraw.transaction as UnsignedTransaction;
+    console.log("Owner Signature:", signature);
 
-    if (!transaction) {
-      throw new Error("No transaction returned from earnManage");
+    // Step 4: Prepare gas-sponsored transaction
+    const sponsorGasResponse = await compassApiSDK.gasSponsorship.gasSponsorshipPrepare({
+      owner: ownerAccount.address,
+      chain: CHAIN,
+      eip712: eip712TypedData as any,
+      signature,
+      sender: sponsorAccount.address,
+    });
+
+    const sponsoredTransaction = sponsorGasResponse.transaction as UnsignedTransaction;
+
+    if (!sponsoredTransaction) {
+      throw new Error("No transaction returned from gasSponsorshipPrepare");
     }
 
-    const withdrawTxHash = await walletClient.sendTransaction({
-      ...(transaction as any),
-      value: BigInt(transaction.value),
-      gas: transaction.gas ? BigInt(transaction.gas) : undefined,
-      maxFeePerGas: BigInt(transaction.maxFeePerGas),
-      maxPriorityFeePerGas: BigInt(transaction.maxPriorityFeePerGas),
+    console.log("Sponsored Transaction:", sponsoredTransaction);
+
+    // Step 5: Sponsor signs and submits the transaction
+    const withdrawTxHash = await sponsorWalletClient.sendTransaction({
+      ...(sponsoredTransaction as any),
+      value: BigInt(sponsoredTransaction.value),
+      gas: sponsoredTransaction.gas ? BigInt(sponsoredTransaction.gas) : undefined,
+      maxFeePerGas: BigInt(sponsoredTransaction.maxFeePerGas),
+      maxPriorityFeePerGas: BigInt(sponsoredTransaction.maxPriorityFeePerGas),
     });
 
     const tx = await publicClient.waitForTransactionReceipt({

wallet-earn/package.json

@@ -9,7 +9,7 @@
     "lint": "next lint"
   },
   "dependencies": {
-    "@compass-labs/api-sdk": "^2.0.1",
+    "@compass-labs/api-sdk": "1.3.5",
     "@geist-ui/core": "^2.3.8",
     "@radix-ui/react-slider": "^1.3.6",
     "@vercel/analytics": "^1.5.0",