n8nworkflows.xyz/workflows/Loop Over Items — Beginner Example-7152/loop_over_items_beginner_example.json

{"meta":{"instanceId":"efb474b59b0341d7791932605bd9ff04a6c7ed9941fdd53dc4a2e4b99a6f9439","templateCredsSetupCompleted":true},"nodes":[{"id":"bdd87769-9f12-4bd1-8dd9-1b90ec218209","name":"Loop Over Items","type":"n8n-nodes-base.splitInBatches","position":[600,-540],"parameters":{"options":{}},"typeVersion":3},{"id":"6209e2d5-4c6e-4239-8275-a8d3411cb6f9","name":"OpenAI Chat Model","type":"@n8n/n8n-nodes-langchain.lmChatOpenAi","position":[820,-120],"parameters":{"model":{"__rl":true,"mode":"list","value":"gpt-4o-mini"},"options":{}},"credentials":{"openAiApi":{"id":"ghJTvay8CvwXDsXz","name":"OpenAi account"}},"typeVersion":1.2},{"id":"8e3ecba2-5a55-40bc-ba3a-b3cb0d581630","name":"Tool: Inject Creativity","type":"@n8n/n8n-nodes-langchain.toolThink","position":[1060,-100],"parameters":{},"typeVersion":1},{"id":"a73bc4ac-78f7-4410-ac1a-0952415dbe9f","name":"Sticky Note3","type":"n8n-nodes-base.stickyNote","position":[-740,-900],"parameters":{"width":2260,"height":1140,"content":"## 📬 Need Help or Want to Customize This?\n📧 [robert@ynteractive.com](mailto:robert@ynteractive.com)  \n🔗 [LinkedIn](https://www.linkedin.com/in/robert-breen-29429625/)\n\n\n## 🔧 Step-by-Step Setup\n\n### 1️⃣ Run Workflow\n\n- **Node**: `Manual Trigger (Run Workflow)`\n- **Purpose**: Manually start the workflow for testing or learning.\n\n\n### 2️⃣ Create Random Data\n\n- **Node**: `Create Random Data (Code)`\n- **What it does**: Simulates incoming data with multiple content ideas.\n\n\n### 3️⃣ Loop Over Items\n\n- **Node**: `Loop Over Items (SplitInBatches)`\n- **Purpose**: Sends one record at a time to the next node.\n- **Why It Matters**: Loops in n8n are created using this node when you want to iterate over multiple items.\n\n\n### 4️⃣ Create Captions with AI\n\n- **Node**: `Create Captions (LangChain Agent)`\n- **Prompt**: \n```text\nidea: {{ $json.idea }}\n```\n- **System Message**: \n```text\nYou are a helpful assistant creating captions for a LinkedIn post. Please create a LinkedIn caption for the idea.\n```\n- **Model**: GPT-4o Mini or GPT-3.5\n- **Credentials Required**:\n  - **OpenAI Credential**  \n    - Go to: [OpenAI API Keys](https://platform.openai.com/account/api-keys)\n    - Create a key and add it in n8n under credentials as “OpenAi account”\n\n\n### 5️⃣ Inject Creativity (Optional)\n\n- **Node**: `Tool: Inject Creativity (LangChain Tool)`\n- **Purpose**: Demonstrates optional LangChain tools that can enhance or manipulate input/output.\n- **Why It’s Cool**: A great way to show chaining tools to AI agents.\n\n\n\n\n\n"},"typeVersion":1},{"id":"a523d13f-653d-4a91-a672-b0bd5d558f27","name":"Run Workflow","type":"n8n-nodes-base.manualTrigger","position":[220,-680],"parameters":{},"typeVersion":1},{"id":"f0e1af9b-2785-47b1-a38c-3e108bff67f8","name":"Create Random Data","type":"n8n-nodes-base.code","position":[380,-540],"parameters":{"jsCode":"return [\n  {\n    json: {\n      row_number: 2,\n      id: 1,\n      Date: '2025-07-30',\n      idea: 'n8n rises to the top',\n      caption: '',\n      complete: ''\n    }\n  },\n  {\n    json: {\n      row_number: 3,\n      id: 2,\n      Date: '2025-07-31',\n      idea: 'n8n nodes',\n      caption: '',\n      complete: ''\n    }\n  },\n  {\n    json: {\n      row_number: 4,\n      id: 3,\n      Date: '2025-08-01',\n      idea: 'n8n use cases for marketing',\n      caption: '',\n      complete: ''\n    }\n  }\n];\n"},"typeVersion":2},{"id":"8891b681-a7cf-44c0-aff7-79e7774120d1","name":"Create Captions","type":"@n8n/n8n-nodes-langchain.agent","position":[860,-380],"parameters":{"text":"=idea: {{ $json.idea }}","options":{"systemMessage":"You are a helpful assistant creating captions for a linkedin post. Please create a linkedin caption for the idea. "},"promptType":"define"},"typeVersion":2},{"id":"fa53cf32-03de-4667-80bb-b28f8c3a16aa","name":"Output Table","type":"n8n-nodes-base.set","position":[960,-600],"parameters":{"options":{},"assignments":{"assignments":[{"id":"331d2ca1-da0d-41ec-ac82-abe78052b84c","name":"idea","type":"string","value":"={{ $('Create Random Data').item.json.idea }}"},{"id":"019369d9-ae99-4c29-b31d-013e29c4fdb6","name":"output","type":"string","value":"={{ $json.output }}"}]}},"typeVersion":3.4}],"pinData":{},"connections":{"Run Workflow":{"main":[[{"node":"Create Random Data","type":"main","index":0}]]},"Create Captions":{"main":[[{"node":"Loop Over Items","type":"main","index":0}]]},"Loop Over Items":{"main":[[{"node":"Output Table","type":"main","index":0}],[{"node":"Create Captions","type":"main","index":0}]]},"OpenAI Chat Model":{"ai_languageModel":[[{"node":"Create Captions","type":"ai_languageModel","index":0}]]},"Create Random Data":{"main":[[{"node":"Loop Over Items","type":"main","index":0}]]},"Tool: Inject Creativity":{"ai_tool":[[{"node":"Create Captions","type":"ai_tool","index":0}]]}}}