Auto-Categorize WordPress Posts with AI

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 →

{
  "id": "caaf1WFANPKAikiH",
  "meta": {
    "templateCredsSetupCompleted": true
  },
  "name": "Auto categorize wordpress template",
  "tags": [],
  "nodes": [
    {
      "id": "2017403c-7496-48f8-a487-8a017c7adfe3",
      "name": "When clicking \u2018Test workflow\u2019",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        680,
        320
      ],
      "parameters": {},
      "typeVersion": 1
    },
    {
      "id": "82ff288f-4234-4192-9046-33e5ffee5264",
      "name": "Wordpress",
      "type": "n8n-nodes-base.wordpress",
      "position": [
        1500,
        320
      ],
      "parameters": {
        "postId": "={{ $('Get All Wordpress Posts').item.json.id }}",
        "operation": "update",
        "updateFields": {
          "categories": "={{ $json.output }}"
        }
      },
      "credentials": {
        "wordpressApi": {
          "name": "<your credential>"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "521deb22-62dd-4b5f-8b9a-aab9777821da",
      "name": "Sticky Note1",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        620,
        -100
      ],
      "parameters": {
        "width": 504.88636363636317,
        "content": "## How to Auto-Categorize 82 Blog Posts in 2 Minutes using A.I. (No Coding Required)\n\n\ud83d\udca1 Read the [case study here](https://rumjahn.com/how-to-use-a-i-to-categorize-wordpress-posts-and-streamline-your-content-organization-process/).\n\n\ud83d\udcfa Watch the [youtube tutorial here](https://www.youtube.com/watch?v=IvQioioVqhw)\n\n"
      },
      "typeVersion": 1
    },
    {
      "id": "4090d827-f8cd-47ef-ad4f-654ee58216f6",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        860,
        180
      ],
      "parameters": {
        "color": 3,
        "width": 188.14814814814804,
        "height": 327.3400673400663,
        "content": "### Get wordpress posts\n\nTurn off return all if you're running into issues.\n"
      },
      "typeVersion": 1
    },
    {
      "id": "71585d54-fdcc-42a5-8a0e-0fac3adc1809",
      "name": "Sticky Note2",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        1080,
        80
      ],
      "parameters": {
        "color": 4,
        "width": 315.1464152082392,
        "height": 416.90235690235625,
        "content": "### A.I. Categorization\n\n1. you need to set up the categories first in wordpress\n\n2. Edit the message prompt and change the categories and category numbers"
      },
      "typeVersion": 1
    },
    {
      "id": "29354054-8600-4e45-99d0-6f30f779a505",
      "name": "Sticky Note3",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        1480,
        240
      ],
      "parameters": {
        "color": 5,
        "width": 171.64983164983155,
        "height": 269.59595959595947,
        "content": "### Update category"
      },
      "typeVersion": 1
    },
    {
      "id": "d9fe6289-6b97-4830-80aa-754ac4d4b3e0",
      "name": "Get All Wordpress Posts",
      "type": "n8n-nodes-base.wordpress",
      "position": [
        900,
        320
      ],
      "parameters": {
        "options": {},
        "operation": "getAll",
        "returnAll": true
      },
      "credentials": {
        "wordpressApi": {
          "name": "<your credential>"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "ed40bf13-8294-4b4e-a8b6-5749989d3420",
      "name": "OpenAI Chat Model",
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "position": [
        1080,
        540
      ],
      "parameters": {
        "options": {}
      },
      "credentials": {
        "openAiApi": {
          "name": "<your credential>"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "dafeb935-532e-4067-9dfb-7e9a6bbc4e5a",
      "name": "AI Agent",
      "type": "@n8n/n8n-nodes-langchain.agent",
      "position": [
        1100,
        320
      ],
      "parameters": {
        "text": "=You are an expert content strategist and taxonomy specialist with extensive experience in blog categorization and content organization.\n\nI will provide you with a blog post's title. Your task is to assign ONE primary category ID from this fixed list:\n\n13 = Content Creation\n14 = Digital Marketing\n15 = AI Tools\n17 = Automation & Integration\n18 = Productivity Tools\n19 = Analytics & Strategy\n\nAnalyze the title and return only the single most relevant category ID number that best represents the main focus of the post. While a post might touch on multiple topics, select the dominant theme that would be most useful for navigation purposes.\n\n{{ $json.title.rendered }}\n\nOutput only the category number",
        "options": {},
        "promptType": "define"
      },
      "typeVersion": 1.7
    }
  ],
  "active": false,
  "settings": {
    "executionOrder": "v1"
  },
  "versionId": "2a753171-425f-4b5a-bd1b-8591ad2d142c",
  "connections": {
    "AI Agent": {
      "main": [
        [
          {
            "node": "Wordpress",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "OpenAI Chat Model": {
      "ai_languageModel": [
        [
          {
            "node": "AI Agent",
            "type": "ai_languageModel",
            "index": 0
          }
        ]
      ]
    },
    "Get All Wordpress Posts": {
      "main": [
        [
          {
            "node": "AI Agent",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "When clicking \u2018Test workflow\u2019": {
      "main": [
        [
          {
            "node": "Get All Wordpress Posts",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  }
}

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.

• openAiApi
• wordpressApi

About this workflow

WordPress Post Auto-Categorization Workflow

Source: https://n8n.io/workflows/2706/ — original creator credit. Request a take-down →

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