diff --git a/definitions/opencode/protos/src/main/proto/transaction/v1/transaction_service.proto b/definitions/opencode/protos/src/main/proto/transaction/v1/transaction_service.proto
index 32c6f348a..f06736d12 100644
--- a/definitions/opencode/protos/src/main/proto/transaction/v1/transaction_service.proto
+++ b/definitions/opencode/protos/src/main/proto/transaction/v1/transaction_service.proto
@@ -381,7 +381,7 @@ message StatefulSwapRequest {
 
             // Where "amount" of "from_mint" will be sent from to the VM swap PDA
             FundingSource funding_source = 5 [(validate.rules).enum = {
-                in: [1, 2] // FUNDING_SOURCE_SUBMIT_INTENT, FUNDING_SOURCE_EXTERNAL_WALLET
+                in: [1, 2, 3] // FUNDING_SOURCE_SUBMIT_INTENT, FUNDING_SOURCE_EXTERNAL_WALLET, FUNDING_SOURCE_COINBASE_ONRAMP
             }];
 
 
@@ -390,6 +390,7 @@ message StatefulSwapRequest {
             //
             // For FUNDING_SOURCE_SUBMIT_INTENT, this value is the base58 encoded intent ID.
             // For FUNDING_SOURCE_EXTERNAL_WALLET, this value is the base58 encoded transaction signature.
+            // For FUNDING_SOURCE_COINBASE_ONRAMP, this value is the order ID
             string funding_id = 6 [(validate.rules).string = {
                 min_len: 32,
                 max_len: 88,
@@ -1462,4 +1463,5 @@ enum FundingSource {
     FUNDING_SOURCE_UNKNOWN         = 0;
     FUNDING_SOURCE_SUBMIT_INTENT   = 1;
     FUNDING_SOURCE_EXTERNAL_WALLET = 2;
+    FUNDING_SOURCE_COINBASE_ONRAMP = 3;
 }
diff --git a/services/opencode/src/main/kotlin/com/getcode/opencode/internal/network/extensions/LocalToProtobuf.kt b/services/opencode/src/main/kotlin/com/getcode/opencode/internal/network/extensions/LocalToProtobuf.kt
index 9c3bb3420..cbe474f4f 100644
--- a/services/opencode/src/main/kotlin/com/getcode/opencode/internal/network/extensions/LocalToProtobuf.kt
+++ b/services/opencode/src/main/kotlin/com/getcode/opencode/internal/network/extensions/LocalToProtobuf.kt
@@ -296,6 +296,11 @@ internal fun SwapRequest.currencyCreatorParams(): TransactionService.StatefulSwa
                             setFundingId(source.id.base58)
                         }
 
+                        is SwapFundingSource.CoinbaseOnramp -> {
+                            setFundingSource(TransactionService.FundingSource.FUNDING_SOURCE_COINBASE_ONRAMP)
+                            setFundingId(source.orderId)
+                        }
+
                         SwapFundingSource.Unknown -> Unit
                     }
                 }
diff --git a/services/opencode/src/main/kotlin/com/getcode/opencode/internal/network/extensions/ProtobufToLocal.kt b/services/opencode/src/main/kotlin/com/getcode/opencode/internal/network/extensions/ProtobufToLocal.kt
index 09ce80e58..faf6479a4 100644
--- a/services/opencode/src/main/kotlin/com/getcode/opencode/internal/network/extensions/ProtobufToLocal.kt
+++ b/services/opencode/src/main/kotlin/com/getcode/opencode/internal/network/extensions/ProtobufToLocal.kt
@@ -202,6 +202,7 @@ internal fun TransactionService.StatefulSwapRequest.Initiate.ReserveSwapClientPa
             TransactionService.FundingSource.FUNDING_SOURCE_SUBMIT_INTENT -> SwapFundingSource.SubmitIntent(PublicKey(fundingId).bytes)
             TransactionService.FundingSource.FUNDING_SOURCE_EXTERNAL_WALLET -> SwapFundingSource.ExternalWallet(
                 fundingId.toByteArray().toList())
+            TransactionService.FundingSource.FUNDING_SOURCE_COINBASE_ONRAMP -> SwapFundingSource.CoinbaseOnramp(fundingId.toByteArray().toList())
             TransactionService.FundingSource.UNRECOGNIZED -> SwapFundingSource.Unknown
         }
     )
@@ -219,6 +220,7 @@ internal fun TransactionService.StatefulSwapRequest.Initiate.CoinbaseStableSwapp
             TransactionService.FundingSource.FUNDING_SOURCE_SUBMIT_INTENT -> SwapFundingSource.SubmitIntent(PublicKey(fundingId).bytes)
             TransactionService.FundingSource.FUNDING_SOURCE_EXTERNAL_WALLET -> SwapFundingSource.ExternalWallet(
                 fundingId.toByteArray().toList())
+            TransactionService.FundingSource.FUNDING_SOURCE_COINBASE_ONRAMP -> SwapFundingSource.CoinbaseOnramp(fundingId.toByteArray().toList())
             TransactionService.FundingSource.UNRECOGNIZED -> SwapFundingSource.Unknown
         },
         destinationOwner = destinationOwner.toPublicKey(),
diff --git a/services/opencode/src/main/kotlin/com/getcode/opencode/model/transactions/SwapFundingSource.kt b/services/opencode/src/main/kotlin/com/getcode/opencode/model/transactions/SwapFundingSource.kt
index 3110d33b9..e356d2279 100644
--- a/services/opencode/src/main/kotlin/com/getcode/opencode/model/transactions/SwapFundingSource.kt
+++ b/services/opencode/src/main/kotlin/com/getcode/opencode/model/transactions/SwapFundingSource.kt
@@ -20,4 +20,12 @@ sealed class SwapFundingSource {
      * wallet to complete the transaction.
      */
     data class ExternalWallet(val transactionSignature: List<Byte>): SwapFundingSource()
+
+    /**
+     * Represents a funding source where the user pays via a Coinbase onramp.
+     * @param orderId The Coinbase onramp order ID.
+     */
+    data class CoinbaseOnramp(val orderId: List<Byte>): SwapFundingSource() {
+        constructor(orderId: String): this(orderId.toByteArray().toList())
+    }
 }
\ No newline at end of file
diff --git a/services/opencode/src/main/kotlin/com/getcode/opencode/model/transactions/SwapRequest.kt b/services/opencode/src/main/kotlin/com/getcode/opencode/model/transactions/SwapRequest.kt
index 7179e2cc3..38fdc0c9d 100644
--- a/services/opencode/src/main/kotlin/com/getcode/opencode/model/transactions/SwapRequest.kt
+++ b/services/opencode/src/main/kotlin/com/getcode/opencode/model/transactions/SwapRequest.kt
@@ -52,6 +52,7 @@ sealed interface SwapStartKind {
             get() = when (fundingSource) {
                 is SwapFundingSource.ExternalWallet -> fundingSource.transactionSignature
                 is SwapFundingSource.SubmitIntent -> fundingSource.id
+                is SwapFundingSource.CoinbaseOnramp -> fundingSource.orderId
                 SwapFundingSource.Unknown -> throw IllegalArgumentException("Invalid funding source")
             }
     }