diff --git a/src/guide/buy_btc.md b/src/guide/buy_btc.md
index c691399..addf407 100644
--- a/src/guide/buy_btc.md
+++ b/src/guide/buy_btc.md
@@ -39,9 +39,12 @@ do {
 <section>
 
 ```typescript
-// TODO add docs
+try {
+    let buyBitcoinResponse = await buyBitcoin({provider: BuyBitcoinProvider.MOONPAY})
+} catch (error) {
+    console.log(error)
+}
 ```
-
 </section>
 
 <div slot="title">Dart</div>
@@ -69,9 +72,10 @@ except Exception as error:
 <section>
 
 ```go
-// TODO add docs
+buyBitcoinResponse, err := sdkService.BuyBitcoin(breez_sdk.BuyBitcoinRequest{
+		Provider: breez_sdk.BuyBitcoinProviderMoonpay,
+})
 ```
-
 </section>
 
 <div slot="title">C#</div>
diff --git a/src/guide/payments.md b/src/guide/payments.md
index c5d21d8..00b8ca7 100644
--- a/src/guide/payments.md
+++ b/src/guide/payments.md
@@ -46,7 +46,10 @@ try {
 
 ```typescript
 try {
-    const invoice = await receivePayment(3000, "Invoice for 3000 sats")
+    const invoice = await receivePayment({
+        amountSats: 3000, 
+        description: "Invoice for 3000 sats"
+    })
 } catch (error) {
     console.log(error)
 }
@@ -84,7 +87,10 @@ except Exception as error:
 <section>
 
 ```go
-invoice, err := sdkServices.ReceivePayment(3000, "Invoice for 3000 sats")
+invoice, err := sdkService.ReceivePayment(breez_sdk.ReceivePaymentRequest{
+	AmountSats:  3000,
+	Description: "Invoice for 3000 sats",
+})
 ```
 </section>
 
diff --git a/src/guide/receive_onchain.md b/src/guide/receive_onchain.md
index 09d7879..0b7ce59 100644
--- a/src/guide/receive_onchain.md
+++ b/src/guide/receive_onchain.md
@@ -54,11 +54,7 @@ try {
 
 ```typescript
 try {
-    // Optional user-selected dynamic fees (see Connecting to LSP section for details)
-    const openingFeeParams = null
-    const request = {openingFeeParams: openingFeeParams}
-
-    const swapInfo = await receiveOnchain(request)
+    const swapInfo = await receiveOnchain({})
 
     // Send your funds to the below bitcoin address
     const address = swapInfo.bitcoinAddress;
@@ -105,12 +101,7 @@ except Exception as error:
 <section>
 
 ```go
-// Optional user-selected dynamic fees (see Connecting to LSP section for details)
-request := breez_sdk.ReceiveOnchainRequest{
-    OpeningFeeParams: nil,
-}
-
-if swapInfo, err := sdkServices.ReceiveOnchain(request); err != nil {
+if swapInfo, err := sdkServices.ReceiveOnchain(breez_sdk.ReceiveOnchainRequest{}); err != nil {
     // Send your funds to the below bitcoin address
     address := swapInfo.BitcoinAddress
 }
diff --git a/src/guide/send_onchain.md b/src/guide/send_onchain.md
index 998a2e8..90e2a2c 100644
--- a/src/guide/send_onchain.md
+++ b/src/guide/send_onchain.md
@@ -23,10 +23,9 @@ info!("Total estimated fees for reverse swap: {}", current_fees.total_estimated_
 // Optional parameter.      
 let sendAmountSat:UInt64? = nil
 try {
- let currentFees = try sdk.fetchReverseSwapFees(
+  let currentFees = try sdk.fetchReverseSwapFees(
       req: ReverseSwapFeesRequest(sendAmountSat: sendAmountSat))
   print("Total estimated fees for reverse swap: \(currentFees.totalEstimatedFees)")
-  
 } catch {
     // handle error
 }
@@ -54,7 +53,6 @@ try {
     const currentFees = await fetchReverseSwapFees()
 
     console.log(`Total estimated fees for reverse swap: ${currentFees.totalEstimatedFees}`);
-    
 } catch (error) {
     console.log(error)
 }
@@ -69,7 +67,6 @@ try {
     ReverseSwapPairInfo currentFees = await fetchReverseSwapFees();
 
     print(`Total estimated fees for reverse swap: ${currentFees.totalEstimatedFees}`);
-    
 } catch (error) {
     // handle error
 }
@@ -96,7 +93,6 @@ except Exception as error:
 ```go
 if currentFees, err := sdkServices.FetchReverseSwapFees(); err != nil {
     log.Printf("Total estimated fees for reverse swap: %v", currentFees.TotalEstimatedFees)
-    
 }
 ```
 </section>
@@ -109,7 +105,6 @@ try
 {
     var currentFees = sdk.FetchReverseSwapFees();
     Console.WriteLine($"Total estimated fees for reverse swap: {currentFees.totalEstimatedFees}");
-    
 }
 catch (Exception)
 {