x402
中级
这是一个Crypto Trading领域的自动化工作流，包含 15 个节点。主要使用 If, Code, Webhook, OneShot, OneShotSynch 等节点。 使用x402支付协议和1Shot API实现工作流货币化
前置要求
- •HTTP Webhook 端点（n8n 会自动生成）
分类
工作流预览
可视化展示节点连接关系，支持缩放和平移
导出工作流
复制以下 JSON 配置到 n8n 导入，即可使用此工作流
{
"id": "EfbdYnnqgNACIN81",
"meta": {
"instanceId": "62f017ec8f130d172e2e5f39bbf09515036bfd403dfa60fe06f5ab14b78705d0",
"templateCredsSetupCompleted": true
},
"name": "x402",
"tags": [
{
"id": "ChlnN7rtKHJMnWmM",
"name": "x402",
"createdAt": "2025-06-19T04:23:28.149Z",
"updatedAt": "2025-06-19T04:23:28.149Z"
}
],
"nodes": [
{
"id": "bf854266-4250-4491-af67-ff8fc3b63ac6",
"name": "Webhook",
"type": "n8n-nodes-base.webhook",
"position": [
-500,
-50
],
"webhookId": "92c5ca23-99a7-437d-85da-84aef8bd2a25",
"parameters": {
"path": "92c5ca23-99a7-437d-85da-84aef8bd2a25",
"options": {},
"responseMode": "responseNode"
},
"typeVersion": 2
},
{
"id": "82409682-6932-4714-9f7c-27c60a692245",
"name": "检查是否存在 X-HEADER",
"type": "n8n-nodes-base.if",
"position": [
-280,
-50
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "2ff83590-61f3-41d8-8500-a96103c3844c",
"operator": {
"type": "string",
"operation": "exists",
"singleValue": true
},
"leftValue": "={{ $json.headers['x-payment'] }}",
"rightValue": ""
}
]
}
},
"typeVersion": 2.2
},
{
"id": "efb6f824-6679-4ad4-9b05-c20ef27a706d",
"name": "解码和验证 X-Payment",
"type": "n8n-nodes-base.code",
"position": [
-60,
-125
],
"parameters": {
"jsCode": "try {\n // Decode the x-payment header from base64\n const xPaymentHeader = $input.first().json.headers['x-payment'];\n const decodedXPayment = Buffer.from(xPaymentHeader, 'base64').toString('utf-8');\n\n // Parse the decoded value into a JSON object\n const decodedXPaymentJson = JSON.parse(decodedXPayment);\n\n // Add the parsed JSON object to the input\n $input.first().json.decodedXPayment = decodedXPaymentJson;\n\n return $input.all();\n} catch (error) {\n // Return an error object if the token format is invalid\n return { error: \"invalid token format\" };\n}"
},
"typeVersion": 2
},
{
"id": "6cad76b8-1a56-4028-92f4-a6fb696e1647",
"name": "模拟支付",
"type": "n8n-nodes-1shot.oneShot",
"position": [
380,
-175
],
"parameters": {
"params": "={\n \"from\": \"{{ $json.decodedXPayment.payload.authorization.from }}\",\n \"to\": \"{{ $json.decodedXPayment.payload.authorization.to }}\",\n \"value\": \"{{ $json.decodedXPayment.payload.authorization.value }}\",\n \"validAfter\": \"{{ $json.decodedXPayment.payload.authorization.validAfter }}\",\n \"validBefore\": \"{{ $json.decodedXPayment.payload.authorization.validBefore }}\",\n \"nonce\": \"{{ $json.decodedXPayment.payload.authorization.nonce }}\",\n \"signature\": \"{{ $json.decodedXPayment.payload.signature }}\"\n} ",
"operation": "simulate",
"contractMethodId": "b63aaaa1-059d-4c38-928a-33ad17d66827"
},
"credentials": {
"oneShotOAuth2Api": {
"id": "nkfF9AitCKUCrErK",
"name": "1Shot account"
}
},
"typeVersion": 1
},
{
"id": "a2f18d76-8bea-4d1c-9287-6c0a7594d6da",
"name": "支付模拟成功时",
"type": "n8n-nodes-base.if",
"position": [
600,
-175
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "81c67679-e256-4fd2-bed7-8f4272c2392b",
"operator": {
"name": "filter.operator.equals",
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $json.success.toString() }}",
"rightValue": "true"
}
]
}
},
"typeVersion": 2.2
},
{
"id": "1f182441-25da-41cc-913d-8e724866d7d3",
"name": "1Shot API 提交并等待",
"type": "n8n-nodes-1shot.oneShotSynch",
"position": [
820,
-250
],
"parameters": {
"params": "={\n\"to\": \"{{ $('Ensure Well Formatted Payment Payload').item.json.decodedXPayment.payload.authorization.to }}\",\n\"from\": \"{{ $('Ensure Well Formatted Payment Payload').item.json.decodedXPayment.payload.authorization.from }}\",\n\"value\": \"{{ $('Ensure Well Formatted Payment Payload').item.json.decodedXPayment.payload.authorization.value }}\",\n\"validAfter\": \"{{ $('Ensure Well Formatted Payment Payload').item.json.decodedXPayment.payload.authorization.validAfter }}\",\n\"validBefore\": \"{{ $('Ensure Well Formatted Payment Payload').item.json.decodedXPayment.payload.authorization.validBefore }}\",\n\"nonce\": \"{{ $('Ensure Well Formatted Payment Payload').item.json.decodedXPayment.payload.authorization.nonce }}\",\n\"signature\": \"{{ $('Ensure Well Formatted Payment Payload').item.json.decodedXPayment.payload.signature }}\"\n}",
"additionalFields": {},
"contractMethodId": "b63aaaa1-059d-4c38-928a-33ad17d66827"
},
"credentials": {
"oneShotOAuth2Api": {
"id": "nkfF9AitCKUCrErK",
"name": "1Shot account"
}
},
"typeVersion": 1
},
{
"id": "cfa44cb3-de5c-4ef2-9950-cca2d2bdcfbc",
"name": "确保支付载荷格式正确",
"type": "n8n-nodes-base.if",
"position": [
160,
-120
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "6666e1f6-5e99-49d4-9f9a-a5a35cde4f74",
"operator": {
"type": "string",
"operation": "exists",
"singleValue": true
},
"leftValue": "={{ $json.decodedXPayment.payload.signature }}",
"rightValue": ""
}
]
}
},
"typeVersion": 2.2
},
{
"id": "605abcb3-2acc-4db4-a87a-efae930a015d",
"name": "响应：缺少或无效的支付头",
"type": "n8n-nodes-base.respondToWebhook",
"position": [
380,
50
],
"parameters": {
"options": {
"responseCode": 402
},
"respondWith": "json",
"responseBody": "{\n \"x402Version\": \"1\",\n \"error\": \"X-PAYMENT header has incorrect format\"\n}"
},
"typeVersion": 1.3
},
{
"id": "8790cc26-6626-47fe-ae0f-8142b3fde734",
"name": "响应：支付无效",
"type": "n8n-nodes-base.respondToWebhook",
"position": [
1040,
-75
],
"parameters": {
"options": {
"responseCode": 402
},
"respondWith": "json",
"responseBody": "{\n \"x402Version\": \"1\",\n \"error\": \"X-PAYMENT header did not verify\"\n}"
},
"typeVersion": 1.3
},
{
"id": "5b29d382-d7dc-484c-b700-3de0c5935c8a",
"name": "响应：200 - 支付成功",
"type": "n8n-nodes-base.respondToWebhook",
"position": [
1040,
-300
],
"parameters": {
"options": {
"responseCode": 200
},
"respondWith": "text",
"responseBody": "\"Payment Received!\" "
},
"typeVersion": 1.3
},
{
"id": "ff4b8de5-6be4-4cce-abc6-05e3902eb535",
"name": "便签",
"type": "n8n-nodes-base.stickyNote",
"position": [
-600,
-320
],
"parameters": {
"width": 360,
"height": 220,
"content": "## x402支付端点"
},
"typeVersion": 1
},
{
"id": "7edff090-85d5-48e6-9d86-203bbf3cea11",
"name": "便签1",
"type": "n8n-nodes-base.stickyNote",
"position": [
420,
-400
],
"parameters": {
"width": 360,
"content": "## 任何EVM上的任何ERC-20代币"
},
"typeVersion": 1
},
{
"id": "9b46463f-be85-47e2-a05c-96a696f1965f",
"name": "便签2",
"type": "n8n-nodes-base.stickyNote",
"position": [
1300,
-360
],
"parameters": {
"width": 320,
"height": 200,
"content": "## 在此处放置您的工作流"
},
"typeVersion": 1
},
{
"id": "4e74105c-cf34-45bb-a805-9e3dec1b2435",
"name": "便签3",
"type": "n8n-nodes-base.stickyNote",
"position": [
-980,
140
],
"parameters": {
"width": 840,
"height": 280,
"content": "## 示例Curl命令"
},
"typeVersion": 1
},
{
"id": "ea9adf09-d52c-4ef5-a468-db1dc3247270",
"name": "便签4",
"type": "n8n-nodes-base.stickyNote",
"position": [
80,
-300
],
"parameters": {
"content": "## 确保必需的支付详情"
},
"typeVersion": 1
}
],
"active": true,
"pinData": {},
"settings": {
"executionOrder": "v1"
},
"versionId": "f5595fe7-92b3-4096-aa95-fbd5c78b0a66",
"connections": {
"Webhook": {
"main": [
[
{
"node": "Check for presence of X-HEADER",
"type": "main",
"index": 0
}
]
]
},
"Simulate Payment": {
"main": [
[
{
"node": "On Successful Payment Simulation",
"type": "main",
"index": 0
}
]
]
},
"1Shot API Submit & Wait": {
"main": [
[
{
"node": "Response: 200 - Payment Successful",
"type": "main",
"index": 0
}
],
[
{
"node": "Response: Payment Invalid",
"type": "main",
"index": 0
}
]
]
},
"Decode & Validate X-Payment": {
"main": [
[
{
"node": "Ensure Well Formatted Payment Payload",
"type": "main",
"index": 0
}
]
]
},
"Check for presence of X-HEADER": {
"main": [
[
{
"node": "Decode & Validate X-Payment",
"type": "main",
"index": 0
}
],
[
{
"node": "Response: Missing or Invalid Payment Headers",
"type": "main",
"index": 0
}
]
]
},
"On Successful Payment Simulation": {
"main": [
[
{
"node": "1Shot API Submit & Wait",
"type": "main",
"index": 0
}
],
[
{
"node": "Response: Payment Invalid",
"type": "main",
"index": 0
}
]
]
},
"Ensure Well Formatted Payment Payload": {
"main": [
[
{
"node": "Simulate Payment",
"type": "main",
"index": 0
}
],
[
{
"node": "Response: Missing or Invalid Payment Headers",
"type": "main",
"index": 0
}
]
]
}
}
}常见问题
如何使用这个工作流？
复制上方的 JSON 配置代码，在您的 n8n 实例中创建新工作流并选择「从 JSON 导入」，粘贴配置后根据需要修改凭证设置即可。
这个工作流适合什么场景？
中级 - 加密货币交易
需要付费吗？
本工作流完全免费，您可以直接导入使用。但请注意，工作流中使用的第三方服务（如 OpenAI API）可能需要您自行付费。
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杂项
