This workflow follows the Chainllm → HTTP Request recipe pattern — see all workflows that pair these two integrations.
The workflow JSON
Copy or download the full n8n JSON below. Paste it into a new n8n workflow, add your credentials, activate. Full import guide →
{
"name": "LLM Code Review in GitHub MR",
"nodes": [
{
"parameters": {
"content": "## Edit your own prompt \u2b07\ufe0f\n"
},
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
800,
460
],
"typeVersion": 1,
"id": "ff91ffff-cb3c-4921-8073-c3adee4e76c8"
},
{
"parameters": {
"content": "## Filter comments and customize your trigger words \u2b07\ufe0f"
},
"name": "Sticky Note2",
"type": "n8n-nodes-base.stickyNote",
"position": [
-460,
500
],
"typeVersion": 1,
"id": "9c7d250f-77c0-490f-a221-760ffadb4532"
},
{
"parameters": {
"content": "## Replace your github URL and token \u2b07\ufe0f"
},
"name": "Sticky Note3",
"type": "n8n-nodes-base.stickyNote",
"position": [
-200,
480
],
"typeVersion": 1,
"id": "e8b8a21e-d934-4ed7-af3f-a9cb689cce08"
},
{
"parameters": {
"mode": "runOnceForEachItem",
"jsCode": "// \u89e3\u6790 patch \u7684\u51fd\u6570\nfunction parsePatch(patch) {\n const lines = patch.split('\\n');\n let lastOldLine = 0;\n let lastNewLine = 0;\n let positionLine = 0;\n const originalLines = [];\n const newLines = [];\n\n lines.forEach((line, index) => {\n const match = line.match(/^@@ -(\\d+),\\d+ \\+(\\d+),\\d+ @@/);\n if (match) {\n lastOldLine = parseInt(match[1]);\n lastNewLine = parseInt(match[2]);\n positionLine = lastNewLine + 1;\n } else if (line.startsWith('-')) {\n originalLines.push(line);\n } else if (line.startsWith('+')) {\n newLines.push(line);\n } else if (!line.startsWith('\\\\ No newline at end of file')) {\n originalLines.push(line);\n newLines.push(line);\n }\n });\n\n return {\n lastOldLine: lastOldLine,\n lastNewLine: lastNewLine,\n positionLine: positionLine,\n originalCode: originalLines.join('\\n'),\n newCode: newLines.join('\\n')\n };\n}\n\n// \u4ece\u8f93\u5165\u4e2d\u63d0\u53d6\u4fe1\u606f\nconst input = $json[\"patch\"];\nconst parsedData = parsePatch(input);\n\n// \u8f93\u51fa\nreturn {\n originalCode: parsedData.originalCode,\n newCode: parsedData.newCode\n};\n"
},
"name": "Code",
"type": "n8n-nodes-base.code",
"position": [
640,
460
],
"typeVersion": 2,
"id": "4dc1b952-2822-4a00-b3fb-382998e63ef5"
},
{
"parameters": {
"content": "## Replace your github URL and token \u2b07\ufe0f"
},
"name": "Sticky Note4",
"type": "n8n-nodes-base.stickyNote",
"position": [
1120,
460
],
"typeVersion": 1,
"id": "644b5f17-2728-4503-be94-a49df5c96376"
},
{
"parameters": {
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "strict",
"version": 1
},
"conditions": [
{
"operator": {
"type": "number",
"operation": "equals"
},
"leftValue": "={{ $json.body.pull_request.comments }}",
"rightValue": 0
}
],
"combinator": "and"
},
"options": {}
},
"name": "Need Review",
"type": "n8n-nodes-base.if",
"position": [
-400,
680
],
"typeVersion": 2,
"id": "5f93b317-3f3b-4bae-8941-74180c5c24c1"
},
{
"parameters": {
"url": "=https://api.github.com/repos/{{ $json[\"body\"][\"repository\"][\"full_name\"] }}/pulls/{{ $json[\"body\"][\"pull_request\"][\"number\"] }}/files",
"sendHeaders": true,
"headerParameters": {
"parameters": [
{
"name": "Authorization",
"value": "token YOUR_TOKEN"
}
]
},
"options": {}
},
"name": "Get Changes",
"type": "n8n-nodes-base.httpRequest",
"position": [
-140,
660
],
"typeVersion": 4.1,
"id": "298b696b-7bbf-4306-8b63-61f3a3f2b0ac"
},
{
"parameters": {
"fieldToSplitOut": "changes",
"include": "selectedOtherFields",
"fieldsToInclude": "patch",
"options": {
"disableDotNotation": false,
"destinationFieldName": "changes",
"includeBinary": false
}
},
"name": "Split Out",
"type": "n8n-nodes-base.splitOut",
"position": [
60,
660
],
"typeVersion": 1,
"id": "3db26038-4d63-43cf-8e19-55b121d57318"
},
{
"parameters": {
"conditions": {
"options": {
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"conditions": [
{
"operator": {
"type": "number",
"operation": "gt"
},
"leftValue": "={{ $json.changes }}",
"rightValue": 0
}
],
"combinator": "and"
},
"options": {}
},
"name": "Skip File Change",
"type": "n8n-nodes-base.if",
"position": [
260,
660
],
"typeVersion": 2,
"id": "939f3c1d-505b-4643-a6f4-9a80429aeb3e"
},
{
"parameters": {
"mode": "runOnceForEachItem",
"jsCode": "// \u89e3\u6790 patch \u7684\u51fd\u6570\nfunction parsePatch(patch) {\n const lines = patch.split('\\n');\n let lastOldLine = 0;\n let lastNewLine = 0;\n let positionLine = 0;\n const filteredLines = [];\n\n lines.forEach((line, index) => {\n // \u67e5\u627e @@ -17,6 +17,20 @@ \u5f62\u5f0f\u7684\u884c\uff0c\u5e76\u63d0\u53d6\u4fe1\u606f\n const match = line.match(/^@@ -(\\d+),\\d+ \\+(\\d+),\\d+ @@/);\n if (match) {\n lastOldLine = parseInt(match[1]);\n lastNewLine = parseInt(match[2]);\n positionLine = lastNewLine + 1;\n }\n // \u8fc7\u6ee4\u6389\u201cNo newline at end of file\u201d\u884c\n if (line.trim() !== '\\\\ No newline at end of file') {\n filteredLines.push(line);\n }\n });\n\n return {\n lastOldLine: lastOldLine,\n lastNewLine: lastNewLine,\n positionLine: positionLine,\n patch: filteredLines.join('\\n') // \u8fd4\u56de\u53bb\u6389\u591a\u4f59\u884c\u7684patch\n };\n}\n\n// \u4ece\u8f93\u5165\u4e2d\u63d0\u53d6\u4fe1\u606f\nconst input = $json[\"patch\"];\nconst changes = $json[\"changes\"];\nconst parsedData = parsePatch(input);\n\n// \u8f93\u51fa\nreturn {\n lastOldLine: parsedData.lastOldLine,\n lastNewLine: parsedData.lastNewLine,\n positionLine: changes, // \u786e\u4fdd positionLine \u7b49\u4e8e changes\n patch: parsedData.patch\n};\n"
},
"name": "Parse Last Diff Line",
"type": "n8n-nodes-base.code",
"position": [
460,
460
],
"typeVersion": 2,
"id": "e6e66503-6867-4266-8050-5ae3d938cd18"
},
{
"parameters": {
"method": "POST",
"url": "=https://api.github.com/repos/{{$('Webhook').item.json['body'].repository.full_name}}/pulls/{{ $('Webhook').item.json.body.pull_request.number }}/comments",
"sendHeaders": true,
"headerParameters": {
"parameters": [
{
"name": "Authorization",
"value": "token YOUR_TOKEN"
},
{
"name": "Content-Type",
"value": " application/json"
}
]
},
"sendBody": true,
"specifyBody": "json",
"jsonBody": "={\n \"body\": {{ JSON.stringify($('Basic LLM Chain').item.json[\"text\"]); }},\n \"commit_id\": {{ JSON.stringify($('Need Review').item.json.body.pull_request.head.sha); }},\n \"path\": {{ JSON.stringify($('Get Changes').item.json.filename); }},\n \"position\": {{ $('Parse Last Diff Line').item.json.positionLine }}\n}",
"options": {}
},
"name": "Post Discussions",
"type": "n8n-nodes-base.httpRequest",
"position": [
1200,
640
],
"typeVersion": 4.1,
"id": "31b93a2e-bf75-4dc3-bb9b-0de3b1d43c3a"
},
{
"parameters": {
"httpMethod": "POST",
"path": "4b8de672-fbc8-41c9-a4b4-a218579206cc",
"options": {}
},
"name": "Webhook",
"type": "n8n-nodes-base.webhook",
"position": [
-620,
680
],
"typeVersion": 1.1,
"id": "a6e39d35-7114-43bf-903b-b33ede1f3796"
},
{
"parameters": {
"model": "=GLM-4-Plus",
"options": {
"baseURL": "https://open.bigmodel.cn/api/paas/v4/"
}
},
"name": "big model",
"type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
"position": [
820,
780
],
"typeVersion": 1,
"id": "725bf6fb-0b89-496a-ab81-8a23d1091d42",
"credentials": {
"openAiApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"prompt": "=\n\n```Original code\n {{ $json.originalCode }}\n```\nchange to\n```New code\n {{ $json.newCode }}\n```\nPlease review the code changes in this section:",
"hasOutputParser": true,
"messages": {
"messageValues": [
{
"type": "AIMessagePromptTemplate",
"message": "# Overview:| \u60a8\u662f\u9ad8\u7ea7\u7f16\u7a0b\u4e13\u5bb6Bot\uff0c\u8d1f\u8d23\u5ba1\u67e5\u4ee3\u7801\u66f4\u6539\u5e76\u63d0\u4f9b\u5ba1\u67e5\u5efa\u8bae\u3002\u5728\u5efa\u8bae\u4e4b\u521d\uff0c\u9700\u8981\u660e\u786e\u505a\u51fa\u201c\u62d2\u7edd\u201d\u6216\u201c\u63a5\u53d7\u201d\u4ee3\u7801\u53d8\u66f4\u7684\u51b3\u5b9a\uff0c\u5e76\u4ee5\u201c\u53d8\u66f4\u5f97\u5206:\u5b9e\u9645\u5f97\u5206\u201d\u7684\u5f62\u5f0f\u5bf9\u53d8\u66f4\u8fdb\u884c\u8bc4\u5206\uff0c\u8bc4\u5206\u8303\u56f4\u4e3a0-100\u5206\u3002\u7136\u540e\uff0c\u4ee5\u7b80\u6d01\u7684\u8bed\u8a00\u548c\u4e25\u5389\u7684\u8bed\u6c14\u6307\u51fa\u5b58\u5728\u7684\u95ee\u9898\u3002\u5982\u679c\u60a8\u89c9\u5f97\u6709\u5fc5\u8981\uff0c\u53ef\u4ee5\u76f4\u63a5\u63d0\u4f9b\u4fee\u6539\u540e\u7684\u5185\u5bb9\u3002\u4f60\u7684\u8bc4\u5ba1\u63d0\u6848\u5fc5\u987b\u4f7f\u7528\u4e25\u683c\u7684Markdown\u683c\u5f0f"
}
]
}
},
"name": "Basic LLM Chain",
"type": "@n8n/n8n-nodes-langchain.chainLlm",
"position": [
800,
640
],
"typeVersion": 1.2,
"id": "db38a0e7-4c12-45eb-9cb5-f473441be4f9"
}
],
"connections": {
"Code": {
"main": [
[
{
"node": "Basic LLM Chain",
"type": "main",
"index": 0
}
]
]
},
"Need Review": {
"main": [
[
{
"node": "Get Changes",
"type": "main",
"index": 0
}
]
]
},
"Get Changes": {
"main": [
[
{
"node": "Split Out",
"type": "main",
"index": 0
}
]
]
},
"Split Out": {
"main": [
[
{
"node": "Skip File Change",
"type": "main",
"index": 0
}
]
]
},
"Skip File Change": {
"main": [
[
{
"node": "Parse Last Diff Line",
"type": "main",
"index": 0
}
]
]
},
"Parse Last Diff Line": {
"main": [
[
{
"node": "Code",
"type": "main",
"index": 0
}
]
]
},
"Webhook": {
"main": [
[
{
"node": "Need Review",
"type": "main",
"index": 0
}
]
]
},
"big model": {
"ai_languageModel": [
[
{
"node": "Basic LLM Chain",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"Basic LLM Chain": {
"main": [
[
{
"node": "Post Discussions",
"type": "main",
"index": 0
}
]
]
}
},
"active": false,
"settings": {
"executionOrder": "v1"
},
"versionId": "4988315a-70cd-43b4-9f91-85408f6c5dc9",
"meta": {
"templateCredsSetupCompleted": true
},
"id": "YCTsv5Aohm9hZO3I",
"tags": [
{
"createdAt": "2024-10-31T11:12:04.946Z",
"updatedAt": "2024-10-31T11:12:04.946Z",
"id": "qFI4u1x8MkoOs1vC",
"name": "share"
}
]
}
Credentials you'll need
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openAiApi
Pro
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About this workflow
LLM Code Review in GitHub MR. Uses httpRequest, lmChatOpenAi, chainLlm. Webhook trigger; 14 nodes.
Source: https://gist.github.com/JeaNile/0ee00f3a855385b4e60f50bf686695b3 — original creator credit. Request a take-down →
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