AI Comment Generator for WordPress

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 →

{
  "nodes": [
    {
      "id": "37f90234-8233-495a-b9e5-394de7c76852",
      "name": "When clicking \u2018Execute workflow\u2019",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        -16,
        -272
      ],
      "parameters": {},
      "typeVersion": 1
    },
    {
      "id": "4d31b3f6-bc9c-467d-a797-682570710b9b",
      "name": "Sticky Note1",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -80,
        -400
      ],
      "parameters": {
        "color": 4,
        "width": 1648,
        "height": 320,
        "content": "## Article AI Comment Generator\n\nThis workflow uses AI to generate relevant, natural-sounding comments for blog posts. It retrieves articles via the WordPress REST API, builds a prompt from the post content, and posts the AI-generated comment back to the site.\n\n\n"
      },
      "typeVersion": 1
    },
    {
      "id": "fa18a2e9-b5ab-4d96-bd04-bd5914c69a8b",
      "name": "Fetch Articles from WordPress",
      "type": "n8n-nodes-base.httpRequest",
      "maxTries": 5,
      "position": [
        208,
        -272
      ],
      "parameters": {
        "url": "https://example.com/wp-json/wp/v2/posts?per_page=100&status=publish&_fields=id,title,excerpt,content,link,comment_status",
        "options": {
          "timeout": 60000,
          "batching": {
            "batch": {
              "batchSize": 25
            }
          }
        },
        "authentication": "genericCredentialType",
        "genericAuthType": "httpBasicAuth"
      },
      "credentials": {
        "httpBasicAuth": {
          "name": "<your credential>"
        }
      },
      "retryOnFail": true,
      "typeVersion": 4.2,
      "waitBetweenTries": 2000
    },
    {
      "id": "93d2699f-0579-463c-a7d8-d35c89c058cf",
      "name": "Build Article Comment Prompt",
      "type": "n8n-nodes-base.set",
      "position": [
        464,
        -272
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "3af62c72-bd9b-433a-943c-4caafe23bdd5",
              "name": "prompt",
              "type": "string",
              "value": "=={{ `For the article \u201c${$json.title?.rendered || ''}\u201d, write a short, natural comment (1 sentence) that is relevant. \nSummary: ${(($json.excerpt?.rendered || $json.content?.rendered || '')\n  .replace(/<[^>]+>/g,' ')\n  .replace(/\\s+/g,' ')\n  .trim()).slice(0,300)}` }}\nComment characteristics:\n- If possible, use the article's keyword in the comment\n- Some positive, some neutral\n- Conversational tone, not formal\n- Some short, some long\n"
            }
          ]
        }
      },
      "typeVersion": 3.4
    },
    {
      "id": "532d9763-aa7b-4903-9af4-be58fa4d2fd0",
      "name": "Generate Article Comment (AI)",
      "type": "@n8n/n8n-nodes-langchain.openAi",
      "position": [
        736,
        -272
      ],
      "parameters": {
        "modelId": {
          "__rl": true,
          "mode": "list",
          "value": "gpt-5",
          "cachedResultName": "GPT-5"
        },
        "options": {},
        "messages": {
          "values": [
            {
              "content": "=={{$json.prompt}}\n"
            }
          ]
        }
      },
      "credentials": {
        "openAiApi": {
          "name": "<your credential>"
        }
      },
      "retryOnFail": true,
      "typeVersion": 1.8,
      "waitBetweenTries": 2000
    },
    {
      "id": "4128f339-860f-4920-ae79-beb6c9bf43d4",
      "name": "Extract AI Output1",
      "type": "n8n-nodes-base.set",
      "position": [
        1088,
        -272
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "18fe84dc-59b3-440b-830d-da161cd5e3da",
              "name": "comment",
              "type": "string",
              "value": "={{$json.message?.content || $json.choices?.[0]?.message?.content || $json.content}}"
            }
          ]
        }
      },
      "typeVersion": 3.4
    },
    {
      "id": "12085249-1c90-41d9-af5c-0ff91f3aedbc",
      "name": "Post Comment to Article",
      "type": "n8n-nodes-base.httpRequest",
      "maxTries": 5,
      "position": [
        1344,
        -272
      ],
      "parameters": {
        "url": "https://example.com/wp-json/wp/v2/comments",
        "method": "POST",
        "options": {
          "timeout": 60000
        },
        "sendBody": true,
        "authentication": "genericCredentialType",
        "bodyParameters": {
          "parameters": [
            {
              "name": "post",
              "value": "={{ $('Fetch Articles from WordPress').item.json.id }}"
            },
            {
              "name": "content",
              "value": "={{ $('Generate Article Comment (AI)').item.json.message.content }}"
            },
            {
              "name": "author_name",
              "value": "={{ (() => {\n  const first = ['John','Emily','Michael','Sophia','David','Olivia','Daniel','Ava','James','Isabella','Ethan','Mia','William','Charlotte','Benjamin','Amelia','Alexander','Harper','Lucas','Ella'];\n  const last  = ['Smith','Johnson','Williams','Brown','Jones','Garcia','Miller','Davis','Rodriguez','Martinez','Hernandez','Lopez','Gonzalez','Wilson','Anderson','Thomas','Taylor','Moore','Jackson','Martin'];\n  return `${first[Math.floor(Math.random()*first.length)]} ${last[Math.floor(Math.random()*last.length)]}`;\n})() }}\n"
            },
            {
              "name": "author_email",
              "value": "={{ `guest+post${$items(\"Fetch Articles from WordPress\")[$itemIndex()].json.id}-${Date.now()%100000}@example.com`.toLowerCase() }}"
            }
          ]
        },
        "genericAuthType": "httpBasicAuth"
      },
      "credentials": {
        "httpBasicAuth": {
          "name": "<your credential>"
        }
      },
      "retryOnFail": true,
      "typeVersion": 4.2,
      "waitBetweenTries": 2000
    }
  ],
  "connections": {
    "Extract AI Output1": {
      "main": [
        [
          {
            "node": "Post Comment to Article",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Build Article Comment Prompt": {
      "main": [
        [
          {
            "node": "Generate Article Comment (AI)",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Fetch Articles from WordPress": {
      "main": [
        [
          {
            "node": "Build Article Comment Prompt",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Generate Article Comment (AI)": {
      "main": [
        [
          {
            "node": "Extract AI Output1",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "When clicking \u2018Execute workflow\u2019": {
      "main": [
        [
          {
            "node": "Fetch Articles from WordPress",
            "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.

• httpBasicAuth
• openAiApi

About this workflow

Awesome N8N Templates. Uses manualTrigger, stickyNote, httpRequest, openAi. Event-driven trigger; 7 nodes.

Source: https://github.com/ScraperNode/awesome-n8n-templates/blob/main/templates/ai-and-llm/7580-automate-blog-engagement-with-gpt-5-generated-comments-for-wordpress/workflow.json — original creator credit. Request a take-down →

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