GitHub Code Review with AI Agent

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": "Gitflow: 4 - Code Review",
  "nodes": [
    {
      "parameters": {
        "githubApi": "YOUR_GITHUB_API_CREDENTIAL_ID",
        "events": [
          "pull_request.synchronize"
        ]
      },
      "name": "GitHub Trigger",
      "type": "n8n-nodes-base.githubTrigger",
      "typeVersion": 1,
      "position": [
        250,
        300
      ]
    },
    {
      "parameters": {
        "owner": "eivindingebrigtsen",
        "repository": "agent",
        "operation": "getPullRequestDiff",
        "pullRequestNumber": "={{ $json.body.pull_request.number }}"
      },
      "name": "GitHub: Get Diff",
      "type": "n8n-nodes-base.github",
      "typeVersion": 3,
      "position": [
        500,
        300
      ],
      "credentials": {
        "githubApi": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "prompt": "You are a senior code reviewer. Analyze the following diff. Check for bugs, style issues, security vulnerabilities, and adherence to best practices. Provide your feedback as a formal PR review.",
        "model": "gemini-pro",
        "text": "={{ $('GitHub: Get Diff').item.json.diff }}"
      },
      "name": "AI Agent: Review Code",
      "type": "n8n-nodes-base.aiAgent",
      "typeVersion": 1,
      "position": [
        750,
        300
      ],
      "credentials": {
        "geminiApi": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "owner": "eivindingebrigtsen",
        "repository": "agent",
        "operation": "createReview",
        "pullRequestNumber": "={{ $json.body.pull_request.number }}",
        "body": "={{ $('AI Agent: Review Code').item.json.output }}",
        "event": "COMMENT"
      },
      "name": "GitHub: Post Review",
      "type": "n8n-nodes-base.github",
      "typeVersion": 3,
      "position": [
        1000,
        300
      ],
      "credentials": {
        "githubApi": {
          "name": "<your credential>"
        }
      }
    }
  ],
  "connections": {
    "GitHub Trigger": {
      "main": [
        [
          {
            "node": "GitHub: Get Diff",
            "type": "main"
          }
        ]
      ]
    },
    "GitHub: Get Diff": {
      "main": [
        [
          {
            "node": "AI Agent: Review Code",
            "type": "main"
          }
        ]
      ]
    },
    "AI Agent: Review Code": {
      "main": [
        [
          {
            "node": "GitHub: Post Review",
            "type": "main"
          }
        ]
      ]
    }
  },
  "active": false,
  "settings": {},
  "id": "4"
}

Credentials you'll need

Each integration node will prompt for credentials when you import. We strip credential IDs before publishing — you'll add your own.

• geminiApi
• githubApi

About this workflow

Gitflow: 4 - Code Review. Uses githubTrigger, github, aiAgent. Event-driven trigger; 4 nodes.

Source: https://github.com/eivindingebrigtsen/agent/blob/e0b57ed02a522ed6adc2b1c58c5feadf427d4a80/.n8n/workflow-4-code-review.json — original creator credit. Request a take-down →

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