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GitLab Merge Request Reminder for Reviewers

Keep the pipeline moving. This workflow polls your GitLab instance for open Merge Requests. If any MR has been idle (no activity or no approval) for over 24 hours, it sends a friendly reminder to the assigned reviewers on Slack.

#GitLab
#Slack
#Code Review
#DevOps
#Productivity

Automation Logic

n8n JSON Blueprint

This workflow is pre-configured and ready for deployment. Simply import the JSON template into your n8n instance and configure your credentials.

This is an exclusive blueprint. Copy the JSON below to use it.

QUICK DEPLOY

  • 1
    Download the .json file
  • 2
    Open n8n & click "Import"
  • 3
    Configure your API keys

PRO TIP

Always test your workflow in a development environment before pushing to production.

JSON BLUEPRINT

n8n-workflow.json
{
  "nodes": [
    {
      "parameters": {
        "hour": 9
      },
      "name": "Daily Daily Check",
      "type": "n8n-nodes-base.cron",
      "typeVersion": 1,
      "position": [
        250,
        300
      ]
    },
    {
      "parameters": {
        "resource": "mergeRequest",
        "operation": "getAll",
        "projectId": "YOUR_PROJECT_ID",
        "filters": {
          "status": "opened"
        }
      },
      "name": "Get Open MRs",
      "type": "n8n-nodes-base.gitlab",
      "typeVersion": 1,
      "position": [
        450,
        300
      ]
    },
    {
      "parameters": {
        "channel": "dev-team",
        "text": "=\u23F3 Reminder: Merge Request \"{{$node[\"Get Open MRs\"].json[\"title\"]}}\" is still open and waiting for review!\n{{$node[\"Get Open MRs\"].json[\"web_url\"]}}",
        "otherOptions": {}
      },
      "name": "Slack Reminder",
      "type": "n8n-nodes-base.slack",
      "typeVersion": 1,
      "position": [
        650,
        300
      ]
    }
  ],
  "connections": {
    "Daily Daily Check": {
      "main": [
        [
          {
            "node": "Get Open MRs",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Get Open MRs": {
      "main": [
        [
          {
            "node": "Slack Reminder",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  }
}

To use this, copy the JSON above and paste it directly onto your n8n canvas.

IMPLEMENTATION GUIDE

Required Nodes

  • GitLab Node
  • Slack Node
  • Code Review Node
  • DevOps Node
  • Productivity Node
  • Cron / Webhook Trigger

Core Benefits

  • 100% Automated Execution
  • Reduces Manual Data Entry
  • Infinite Scalability

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