Usar Claude AI para generar texto alternativo accesible desde Google Sheets a WordPress

• •Pueden requerirse credenciales de autenticación para la API de destino
• •Credenciales de API de Google Sheets

{
  "meta": {
    "instanceId": "393ca9e36a1f81b0f643c72792946a5fe5e49eb4864181ba4032e5a408278263",
    "templateCredsSetupCompleted": true
  },
  "nodes": [
    {
      "id": "b093bb6e-2797-470b-b32f-c4ffe96249bb",
      "name": "Recorrer elementos",
      "type": "n8n-nodes-base.splitInBatches",
      "position": [
        912,
        -16
      ],
      "parameters": {
        "options": {}
      },
      "typeVersion": 3
    },
    {
      "id": "30695fd4-d335-46c8-9987-119ce068da74",
      "name": "Analizar imagen",
      "type": "@n8n/n8n-nodes-langchain.anthropic",
      "onError": "continueRegularOutput",
      "position": [
        1152,
        0
      ],
      "parameters": {
        "text": "#Tâche \nAnalysez cette image et rédigez une description alternative (alt text) pour l'accessibilité web.\nCritères :\n\n##Caractéristiques\nMaximum 125 caractères\nDécrire les éléments visuels essentiels\nTon neutre et factuel\nCommencer par l'élément principal\n\nInclure : sujet principal, actions significatives, contexte important, texte visible\nÉviter : \"image de\", \"photo de\", détails décoratifs, interprétations\nRéponse : Fournir uniquement la description, sans guillemets.\n\n##Exemples\n\nIncorrect : Photo d'un chat mignon qui dort sur un canapé rouge dans un salon\nCorrect : Chat tigré dormant sur un canapé rouge",
        "modelId": {
          "__rl": true,
          "mode": "list",
          "value": "claude-sonnet-4-20250514",
          "cachedResultName": "claude-sonnet-4-20250514"
        },
        "options": {},
        "resource": "image",
        "imageUrls": "={{ $json.URL }}"
      },
      "credentials": {
        "anthropicApi": {
          "id": "WXQf5QsxCs3AyxlW",
          "name": "Anthropic account"
        }
      },
      "typeVersion": 1,
      "alwaysOutputData": true
    },
    {
      "id": "e981bf45-2b8b-45ae-bce5-f20f6d29941b",
      "name": "Actualizar fila en hoja",
      "type": "n8n-nodes-base.googleSheets",
      "position": [
        1568,
        0
      ],
      "parameters": {
        "columns": {
          "value": {
            "URL": "={{ $('Loop Over Items').item.json.URL }}",
            "Alt text": "={{ $json.content[0].text }}",
            "row_number": 0
          },
          "schema": [
            {
              "id": "ID",
              "type": "string",
              "display": true,
              "removed": false,
              "required": false,
              "displayName": "ID",
              "defaultMatch": false,
              "canBeUsedToMatch": true
            },
            {
              "id": "URL",
              "type": "string",
              "display": true,
              "removed": false,
              "required": false,
              "displayName": "URL",
              "defaultMatch": false,
              "canBeUsedToMatch": true
            },
            {
              "id": "Alt text",
              "type": "string",
              "display": true,
              "removed": false,
              "required": false,
              "displayName": "Alt text",
              "defaultMatch": false,
              "canBeUsedToMatch": true
            },
            {
              "id": "row_number",
              "type": "number",
              "display": true,
              "removed": false,
              "readOnly": true,
              "required": false,
              "displayName": "row_number",
              "defaultMatch": false,
              "canBeUsedToMatch": true
            }
          ],
          "mappingMode": "defineBelow",
          "matchingColumns": [
            "URL"
          ],
          "attemptToConvertTypes": false,
          "convertFieldsToString": false
        },
        "options": {},
        "operation": "update",
        "sheetName": {
          "__rl": true,
          "mode": "name",
          "value": "Export media"
        },
        "documentId": {
          "__rl": true,
          "mode": "url",
          "value": "={{ $('Send Sheets URL').item.json.chatInput }}"
        }
      },
      "credentials": {
        "googleSheetsOAuth2Api": {
          "id": "wBRLUCktxqXE6DVJ",
          "name": "Google Sheets account"
        }
      },
      "typeVersion": 4.7
    },
    {
      "id": "71cf07ec-7559-4944-a0e6-adf9b85ac4ee",
      "name": "Enviar URL de Sheets",
      "type": "@n8n/n8n-nodes-langchain.chatTrigger",
      "position": [
        16,
        0
      ],
      "webhookId": "cb9f34cd-dd44-4859-8a12-4f7a20c32237",
      "parameters": {
        "mode": "webhook",
        "public": true,
        "options": {
          "responseMode": "responseNode"
        }
      },
      "typeVersion": 1.3
    },
    {
      "id": "1060d6dd-e8c7-4550-bac0-ab2e608b75a1",
      "name": "Obtener URLs",
      "type": "n8n-nodes-base.googleSheets",
      "position": [
        656,
        0
      ],
      "parameters": {
        "options": {},
        "sheetName": {
          "__rl": true,
          "mode": "name",
          "value": "Export media"
        },
        "documentId": {
          "__rl": true,
          "mode": "url",
          "value": "={{ $('Send Sheets URL').item.json.chatInput }}"
        }
      },
      "credentials": {
        "googleSheetsOAuth2Api": {
          "id": "wBRLUCktxqXE6DVJ",
          "name": "Google Sheets account"
        }
      },
      "typeVersion": 4.7
    },
    {
      "id": "1c82e061-01e3-4efb-861f-b928903ec7ee",
      "name": "Obtener clave WP + URL del sitio sin https://",
      "type": "n8n-nodes-base.googleSheets",
      "position": [
        224,
        0
      ],
      "parameters": {
        "options": {},
        "sheetName": {
          "__rl": true,
          "mode": "name",
          "value": "Infos client"
        },
        "documentId": {
          "__rl": true,
          "mode": "url",
          "value": "={{ $json.chatInput }}"
        }
      },
      "credentials": {
        "googleSheetsOAuth2Api": {
          "id": "wBRLUCktxqXE6DVJ",
          "name": "Google Sheets account"
        }
      },
      "typeVersion": 4.7
    },
    {
      "id": "232776ed-2123-4ff7-96f5-336e85470a99",
      "name": "Obtener clave Base64",
      "type": "n8n-nodes-base.code",
      "position": [
        448,
        0
      ],
      "parameters": {
        "jsCode": "// Dans une Function/Code node n8n\nconst username = $('Get WP Key + website URL WITHOUT https://').first().json['Admin Name'];\nconst password = $('Get WP Key + website URL WITHOUT https://').first().json.KEY;\nconst credentials = username + ':' + password;\n\n// Encoder en Base64 avec Buffer (Node.js)\nconst encodedCredentials = Buffer.from(credentials).toString('base64');\nconst authHeader = 'Basic ' + encodedCredentials;\n\nreturn {\n  json: {\n    username: username,\n    password: password,\n    credentials: credentials,\n    authHeader: authHeader\n  }\n};"
      },
      "typeVersion": 2
    },
    {
      "id": "5ef87414-1e64-443d-925d-fd4c443030d3",
      "name": "Actualizar alt de imagen en WP",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        1792,
        0
      ],
      "parameters": {
        "url": "=https://{{ $('Get WP Key + website URL WITHOUT https://').item.json.Domaine }}/wp-json/wp/v2/media/{{ $('Loop Over Items').item.json.ID }}",
        "method": "POST",
        "options": {},
        "sendBody": true,
        "sendHeaders": true,
        "bodyParameters": {
          "parameters": [
            {
              "name": "alt_text",
              "value": "={{ $('Analyze image').item.json.content[0].text }}"
            }
          ]
        },
        "headerParameters": {
          "parameters": [
            {
              "name": "Content-Type",
              "value": "application/json"
            },
            {
              "name": "Authorization",
              "value": "={{ $('Get Base64 key').item.json.authHeader }}"
            }
          ]
        }
      },
      "typeVersion": 4.2
    },
    {
      "id": "3fb66fec-319f-482c-8b04-3a45490bea72",
      "name": "If",
      "type": "n8n-nodes-base.if",
      "position": [
        1360,
        0
      ],
      "parameters": {
        "options": {},
        "conditions": {
          "options": {
            "version": 2,
            "leftValue": "",
            "caseSensitive": true,
            "typeValidation": "strict"
          },
          "combinator": "and",
          "conditions": [
            {
              "id": "86ad2ab9-a213-4e16-b81b-b1c4315b6822",
              "operator": {
                "type": "string",
                "operation": "notExists",
                "singleValue": true
              },
              "leftValue": "={{ $json.error }}",
              "rightValue": ""
            }
          ]
        }
      },
      "typeVersion": 2.2
    },
    {
      "id": "7d00b936-879e-45d0-a874-2a40f5b5f6c3",
      "name": "Nota adhesiva",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -1248,
        -592
      ],
      "parameters": {
        "color": 4,
        "width": 816,
        "height": 1776,
        "content": "Voici la description avec le lien hypertexte échappé :\n## AI-powered alt text generation from Google Sheets to WordPress media\n## Who's it for\nWordPress site owners, content managers, and accessibility advocates who need to efficiently add alt text descriptions to multiple images for better SEO and web accessibility compliance.\n## What it does\nThis workflow automates the process of generating and updating alt text for WordPress media files using AI analysis. It reads image URLs from a Google Sheet, analyzes each image with Claude AI to generate accessibility-compliant descriptions, updates the sheet with the generated alt text, and automatically applies the descriptions to the corresponding WordPress media files. The workflow includes error handling to skip unsupported media formats and continue processing.\n## How it works\n\nInput: Provide a Google Sheets URL containing image URLs and WordPress media IDs\nAuthentication: Retrieves WordPress credentials from a separate sheet and generates Base64 authentication\nProcessing: Loops through each image URL in the sheet\nAI Analysis: Claude AI analyzes each image and generates concise, accessible alt text (max 125 characters)\nError Handling: Automatically skips unsupported media formats and continues with the next item\nUpdate Sheet: Writes the generated alt text back to the Google Sheet\nWordPress Update: Updates the WordPress media library with the new alt text via REST API\n\n## Requirements\n\nGoogle Sheets with image URLs and WordPress media IDs\nWordPress site with Application Passwords enabled\nClaude AI (Anthropic) API credentials\nWordPress admin credentials stored in Google Sheets\nExport Media URLs WordPress plugin for generating the media list\n\n## How to set up\n### Step 1: Export your WordPress media URLs\n\nInstall the \"Export Media URLs\" plugin on your WordPress site\nGo to the plugin settings and check both ID and URL columns for export (these are mandatory for the workflow)\nExport your media list to get the required data\n\n### Step 2: Configure WordPress Application Passwords\n\nGo to WordPress Admin → Users → Your Profile\nScroll down to \"Application Passwords\" section\nEnter application name (e.g., \"n8n API\")\nClick \"Add New Application Password\"\nCopy the generated password immediately (it won't be shown again)\n\n### Step 3: Set up Google Sheets\n[Duplicate this Google Sheets template]\n(https://docs.google.com/spreadsheets/d/1BKGQRx_xDiuh3QD3ACOOTJomsWFuPBjCHYMQX8UzTBE/edit?usp=sharing\\) to get the correct structure.\nThe template includes two sheets:\nSheet 1: \"Export media\" - Paste your exported media data with columns:\n\nID (WordPress media ID)\nURL (image URL)\nAlt text (will be populated by the workflow)\n\nSheet 2: \"Infos client\" - Add your WordPress credentials:\n\nAdmin Name: Your WordPress username\nKEY: The application password you generated\nDomaine: Your site URL without https:// (format: \"example.com\")\n\n### Step 4: Configure API credentials\n\nAdd your Anthropic API credentials to the Claude node\nConnect your Google Sheets account to the Google Sheets nodes\n\n## How to customize\n\nLanguage: The Claude prompt is in French - modify it in the \"Analyze image\" node for other languages\nAlt text length: Adjust the 125-character limit in the Claude prompt\nBatch processing: Change the batch size in the Split in Batches node\nError handling: The workflow automatically handles unsupported formats, but you can modify the error handling logic\nAuthentication: Customize for different WordPress authentication methods\n\nThis workflow is perfect for managing accessibility compliance across large WordPress media libraries while maintaining consistent, AI-generated descriptions. It's built to be resilient and will continue processing even when encountering unsupported media formats."
      },
      "typeVersion": 1
    },
    {
      "id": "ccae276a-6fc9-4a8e-94d4-f72a478cf336",
      "name": "Fin",
      "type": "n8n-nodes-base.respondToWebhook",
      "position": [
        1168,
        -192
      ],
      "parameters": {
        "options": {},
        "respondWith": "json",
        "responseBody": "={\n    \"text\": \"Fin de la rédaction des alt description\"\n } "
      },
      "typeVersion": 1.2
    }
  ],
  "pinData": {},
  "connections": {
    "3fb66fec-319f-482c-8b04-3a45490bea72": {
      "main": [
        [
          {
            "node": "e981bf45-2b8b-45ae-bce5-f20f6d29941b",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "Loop Over Items",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "1060d6dd-e8c7-4550-bac0-ab2e608b75a1": {
      "main": [
        [
          {
            "node": "Loop Over Items",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "30695fd4-d335-46c8-9987-119ce068da74": {
      "main": [
        [
          {
            "node": "3fb66fec-319f-482c-8b04-3a45490bea72",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "232776ed-2123-4ff7-96f5-336e85470a99": {
      "main": [
        [
          {
            "node": "1060d6dd-e8c7-4550-bac0-ab2e608b75a1",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Loop Over Items": {
      "main": [
        [
          {
            "node": "ccae276a-6fc9-4a8e-94d4-f72a478cf336",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "30695fd4-d335-46c8-9987-119ce068da74",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "71cf07ec-7559-4944-a0e6-adf9b85ac4ee": {
      "main": [
        [
          {
            "node": "1c82e061-01e3-4efb-861f-b928903ec7ee",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "5ef87414-1e64-443d-925d-fd4c443030d3": {
      "main": [
        [
          {
            "node": "Loop Over Items",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "e981bf45-2b8b-45ae-bce5-f20f6d29941b": {
      "main": [
        [
          {
            "node": "5ef87414-1e64-443d-925d-fd4c443030d3",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "1c82e061-01e3-4efb-861f-b928903ec7ee": {
      "main": [
        [
          {
            "node": "232776ed-2123-4ff7-96f5-336e85470a99",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  }
}