[Smart Accounts Kit] x402 seller guide

gator-sidebar.js

@@ -117,7 +117,9 @@ const sidebar = {
           type: 'category',
           label: 'x402',
           collapsed: true,
+          key: 'x402-guides',
           items: [
+            'guides/x402/seller',
             {
               type: 'category',
               label: 'Buyer',

smart-accounts-kit/guides/x402/buyer/advanced-permissions.md

@@ -52,7 +52,7 @@ const sessionAccount = privateKeyToAccount('0x...')
 
 ### 3. Get payment requirements
 
-Call the protected API route once without a payment header.
+Call the protected API route once without the `PAYMENT-SIGNATURE` header.
 
 The server returns `402` with the payment terms (`PAYMENT-REQUIRED`) in the response, which you use
 to build the payment payload.
@@ -222,7 +222,7 @@ For ERC-7710 (Smart Contract Delegation), x402 requires the payload fields `dele
 `permissionContext`, and `delegator`. The facilitator uses `permissionContext` to simulate
 during verification and then settle the payment.
 
-Encode the full x402 payment payload as base64, then send it in the `payment-signature` header.
+Encode the full x402 payment payload as base64, then send it in the `PAYMENT-SIGNATURE` header.
 
 <Tabs>
 <TabItem value="example.ts">
@@ -267,13 +267,13 @@ export type PaymentPayload = {
 
 ### 7. Make the paid request
 
-Send the base64-encoded x402 payment payload in the `payment-signature` header.
+Send the base64-encoded x402 payment payload in the `PAYMENT-SIGNATURE` header.
 If verification succeeds, the server returns the protected data.
 
 ```ts
 const apiResponse = await fetch('https://api.example.com/paid-endpoint', {
   headers: {
-    'payment-signature': encodedPayment,
+    'PAYMENT-SIGNATURE': encodedPayment,
   },
 })
 

smart-accounts-kit/guides/x402/buyer/delegations.md

@@ -69,7 +69,7 @@ export const buyerAccount = privateKeyToAccount('0x<BUYER_PRIVATE_KEY>')
 
 ### 2. Get payment requirements
 
-Call the protected API route once without a payment header.
+Call the protected API route once without the `PAYMENT-SIGNATURE` header.
 
 The server returns `402` with the payment terms (`PAYMENT-REQUIRED`) in the response, which you use
 to build the payment payload.
@@ -194,7 +194,7 @@ For ERC-7710 (Smart Contract Delegation), x402 requires the payload fields `dele
 The facilitator uses `permissionContext` to simulate during verification and then settle the payment.
 
 Use `encodeDelegations` to encode the delegation chain.
-Then base64 encode the full x402 payment payload before sending it in the `payment-signature` header.
+Then base64 encode the full x402 payment payload before sending it in the `PAYMENT-SIGNATURE` header.
 
 <Tabs>
 <TabItem value="example.ts">
@@ -238,13 +238,13 @@ export type PaymentPayload = {
 
 ### 5. Make the paid request
 
-Send the encoded x402 payment payload in the `payment-signature` header.
+Send the encoded x402 payment payload in the `PAYMENT-SIGNATURE` header.
 If verification succeeds, the server returns the protected data.
 
 ```ts
 const apiResponse = await fetch('https://api.example.com/paid-endpoint', {
   headers: {
-    'payment-signature': encodedPayment,
+    'PAYMENT-SIGNATURE': encodedPayment,
   },
 })
 

smart-accounts-kit/guides/x402/buyer/recurring-payments.md

@@ -100,7 +100,7 @@ const grantedPermissions = await walletClient.requestExecutionPermissions([
 
 ### 4. Get payment requirements
 
-Call the x402-protected endpoint without a payment header to request payment terms
+Call the x402-protected endpoint without the `PAYMENT-SIGNATURE` header to request payment terms
 after your agent has been granted permission.
 
 The server returns `402` with the payment terms (`PAYMENT-REQUIRED`) in the response, which agent can use to
@@ -225,7 +225,7 @@ For ERC-7710 (Smart Contract Delegation), x402 requires the payload fields `dele
 `permissionContext`, and `delegator`. The facilitator uses `permissionContext` to simulate
 during verification and then settle the payment.
 
-Encode the full x402 payment payload as base64, then send it in the `payment-signature` header.
+Encode the full x402 payment payload as base64, then send it in the `PAYMENT-SIGNATURE` header.
 
 ```ts
 import { PaymentPayload } from './types'
@@ -247,12 +247,12 @@ const encodedPayment = Buffer.from(JSON.stringify(paymentPayload)).toString('bas
 
 ### 7. Make the paid request
 
-Send the base64-encoded x402 payment payload in the `payment-signature` header.
+Send the base64-encoded x402 payment payload in the `PAYMENT-SIGNATURE` header.
 
 ```ts
 const apiResponse = await fetch('https://api.example.com/paid-endpoint', {
   headers: {
-    'payment-signature': encodedPayment,
+    'PAYMENT-SIGNATURE': encodedPayment,
   },
 })