{ "name": "Create self-improving TikTok carousels with Gemini, fal.ai, OpenAI and Sheets", "nodes": [ { "id": "4da2ba44-04b4-42c6-9e28-eeb5820a567f", "name": "Sticky Note", "type": "n8n-nodes-base.stickyNote", "position": [ -1248, -64 ], "parameters": { "width": 480, "height": 896, "content": "## Auto-create self-improving TikTok carousels with Gemini, fal.ai & Upload-Post\n\n### How it works\n\n1. Runs daily (or manually) and loads product info and Upload-Post credentials from Set Config.\n2. Refreshes TikTok analytics of previous posts in the Google Sheets Performance Log via the Upload-Post API.\n3. Compiles post and profile analytics with the Agent Skill memory into a context for Gemini.\n4. Gemini plans a new 4-slide carousel; fal.ai renders the slides; OpenAI writes the caption.\n5. Upload-Post publishes the carousel to TikTok and logs the post to the sheet.\n6. OpenAI rewrites the Agent Skill with what it learned, so each run improves the next.\n\n### Setup steps\n\n- [ ] Copy the Google Sheet template (Performance Log + Agent Skill tabs) and paste its ID in Set Config\n- [ ] Add Google Sheets OAuth2 credentials to the four Sheets nodes\n- [ ] Add Google Gemini and OpenAI credentials\n- [ ] Add a fal.ai HTTP Header Auth credential (Authorization: Key )\n- [ ] Create an Upload-Post account at https://www.upload-post.com, connect TikTok to a profile and paste user + API key in Set Config\n\n### Customization\n\nEdit product fields and the Strategy Agent prompt for your niche, change the fal.ai model or slide count, or add more platforms in the Upload to TikTok node." }, "typeVersion": 1 }, { "id": "6d77fa31-8b35-448a-8de5-f3652a81d3be", "name": "Sticky Note1", "type": "n8n-nodes-base.stickyNote", "position": [ -688, 128 ], "parameters": { "color": 7, "width": 384, "height": 512, "content": "## Trigger and configuration\n\nRuns daily or on demand. Set Config holds your product name/description and your Upload-Post username and API key, so every later step reads them from one place." }, "typeVersion": 1 }, { "id": "afeb075f-58a5-45e3-a85f-32557fff6689", "name": "Sticky Note2", "type": "n8n-nodes-base.stickyNote", "position": [ -256, 176 ], "parameters": { "color": 7, "width": 1344, "height": 304, "content": "## Refresh analytics of past posts\n\nReads the Performance Log sheet, skips rows that already have fresh stats, fetches views/likes/comments/shares for each TikTok post from the Upload-Post analytics API and writes the engagement rate back to the sheet." }, "typeVersion": 1 }, { "id": "7cdab8a2-1d7c-44da-9224-db3d1c6a51ab", "name": "Sticky Note3", "type": "n8n-nodes-base.stickyNote", "position": [ 1120, 144 ], "parameters": { "color": 7, "width": 688, "height": 320, "content": "## Build the learning context\n\nPulls profile-level TikTok analytics, reads the current Agent Skill memory and the refreshed log, and compiles everything into one context summary the agent can reason about." }, "typeVersion": 1 }, { "id": "d386466b-8f29-49ce-83ec-684de91ffa71", "name": "Sticky Note4", "type": "n8n-nodes-base.stickyNote", "position": [ 1840, 128 ], "parameters": { "color": 7, "width": 544, "height": 576, "content": "## Strategy agent plans the carousel\n\nGemini uses the Think tool to analyse what worked, then returns a structured plan: hook/title, four slide image prompts, hashtags and an engagement question. Set Vars flattens the plan for the next steps." }, "typeVersion": 1 }, { "id": "da25f7e5-306a-445b-befc-1f8c9223c420", "name": "Sticky Note5", "type": "n8n-nodes-base.stickyNote", "position": [ 2416, -64 ], "parameters": { "color": 7, "width": 800, "height": 784, "content": "## Render the four slides\n\nEach prompt is sent in parallel to fal.ai (nano-banana-2) to generate a 9:16 image; the four URLs are merged and aggregated into one item." }, "typeVersion": 1 }, { "id": "df7f44cf-3342-4b67-a228-d45c37859047", "name": "Sticky Note6", "type": "n8n-nodes-base.stickyNote", "position": [ 3248, 96 ], "parameters": { "color": 7, "width": 688, "height": 320, "content": "## Caption, publish and log\n\nOpenAI writes a short TikTok caption, Upload-Post publishes the photo carousel to TikTok and the new post is appended to the Performance Log so it gets analytics on the next run." }, "typeVersion": 1 }, { "id": "820b5060-b0dd-4d0a-bd95-10cfd4845fae", "name": "Sticky Note7", "type": "n8n-nodes-base.stickyNote", "position": [ 3968, 96 ], "parameters": { "color": 7, "width": 496, "height": 320, "content": "## Self-improve the Agent Skill\n\nOpenAI rewrites the Agent Skill text from the cumulative results and saves it back to Google Sheets, so the next run starts from what actually performed." }, "typeVersion": 1 }, { "id": "d36e661e-5e1e-4c87-bbe1-c8a89ab2d2ae", "name": "Daily Schedule", "type": "n8n-nodes-base.scheduleTrigger", "position": [ -640, 304 ], "parameters": { "rule": { "interval": [ { "field": "hours", "hoursInterval": 24 } ] } }, "typeVersion": 1.2 }, { "id": "4dbb4d96-5b0d-4687-8f27-9cc7a62bfcf8", "name": "Set Config", "type": "n8n-nodes-base.set", "position": [ -448, 304 ], "parameters": { "options": {}, "assignments": { "assignments": [ { "id": "1809cc51-6da2-4aef-9946-89517d372cbc", "name": "product_name", "type": "string", "value": "Upload Post" }, { "id": "79675585-aaf7-46ef-b2e3-687ec3316671", "name": "product_description", "type": "string", "value": "Upload Post is a SaaS that lets you publish photos, videos, and text to TikTok, Instagram, YouTube, X, LinkedIn, Facebook, Threads, Pinterest, and Reddit with a single API call. One click, all platforms." }, { "id": "334f4cf1-f3a5-4313-845f-8bd494bf6472", "name": "upload_post_user", "type": "string", "value": "your-upload-post-username" }, { "id": "7c29629e-7b8c-49c2-ae2b-211810d01337", "name": "upload_post_api_key", "type": "string", "value": "PASTE_YOUR_UPLOAD_POST_API_KEY_HERE" }, { "id": "ac725e41-af66-40e2-b4db-1d5e97c57865", "name": "spreadsheet_id", "type": "string", "value": "YOUR_GOOGLE_SHEET_ID" } ] } }, "typeVersion": 3.4 }, { "id": "016aac30-4c12-4277-a247-61310171e452", "name": "Read Performance Log", "type": "n8n-nodes-base.googleSheets", "onError": "continueRegularOutput", "position": [ -208, 304 ], "parameters": { "options": {}, "sheetName": { "__rl": true, "mode": "name", "value": "Performance Log" }, "documentId": { "__rl": true, "mode": "id", "value": "={{ $('Set Config').first().json.spreadsheet_id }}" } }, "typeVersion": 4.5, "alwaysOutputData": true }, { "id": "5d9a3622-7422-436c-b98f-b0966fd37566", "name": "Filter Posts for Stats", "type": "n8n-nodes-base.code", "position": [ 32, 304 ], "parameters": { "jsCode": "const items = $input.all();\nconst results = [];\n\nfor (const item of items) {\n const d = item.json;\n if (d.request_id && d.request_id.length > 5 && d.request_id !== 'pending') {\n const hasStats = d.views && String(d.views).length > 0 && Number(d.views) > 0;\n const postDate = d.post_date ? new Date(d.post_date) : null;\n const isRecent = postDate ? (Date.now() - postDate.getTime()) < 7*24*60*60*1000 : true;\n if (!hasStats || isRecent) {\n results.push({ json: { request_id: d.request_id, _skip: false } });\n }\n }\n}\n\n// ALWAYS output at least 1 item so the chain never stalls\nif (results.length === 0) {\n return [{ json: { request_id: 'skip', _skip: true } }];\n}\nreturn results;\n" }, "typeVersion": 2 }, { "id": "c55a136a-8311-452d-910c-ef0ba2d404e5", "name": "Get Post Analytics", "type": "n8n-nodes-base.httpRequest", "position": [ 272, 304 ], "parameters": { "url": "=https://api.upload-post.com/api/uploadposts/post-analytics/{{ $json.request_id }}?platform=tiktok", "options": { "response": { "response": { "neverError": true } } }, "sendHeaders": true, "authentication": "none", "headerParameters": { "parameters": [ { "name": "Authorization", "value": "=ApiKey {{ $('Set Config').first().json.upload_post_api_key }}" } ] } }, "typeVersion": 4.2 }, { "id": "3e0b27fd-b6be-407d-a46f-1a5ef4c07f45", "name": "Extract Stats", "type": "n8n-nodes-base.code", "position": [ 512, 304 ], "parameters": { "jsCode": "const items = $input.all();\nconst filterItems = $('Filter Posts for Stats').all();\nconst results = [];\n\nfor (let i = 0; i < items.length; i++) {\n const filterItem = filterItems[i]?.json || {};\n const a = items[i].json;\n\n // Skip if this was a pass-through item\n if (filterItem._skip) {\n results.push({ json: { request_id: 'skip', _skip: true, views: '0', likes: '0', comments: '0', shares: '0', engagement_rate: '0%' } });\n continue;\n }\n\n let views = 0, likes = 0, comments = 0, shares = 0;\n const sources = [a?.platforms?.tiktok?.post_metrics, a?.tiktok?.post_metrics, a?.post_metrics, a];\n for (const m of sources) {\n if (m && (m.views || m.view_count || m.play_count)) {\n views = m.views || m.view_count || m.play_count || 0;\n likes = m.likes || m.like_count || m.digg_count || 0;\n comments = m.comments || m.comment_count || 0;\n shares = m.shares || m.share_count || 0;\n break;\n }\n }\n const eng = views > 0 ? (((likes+comments+shares)/views)*100).toFixed(2)+'%' : '0%';\n results.push({ json: { request_id: filterItem.request_id, _skip: false, views: String(views), likes: String(likes), comments: String(comments), shares: String(shares), engagement_rate: eng } });\n}\n\nreturn results;\n" }, "typeVersion": 2 }, { "id": "22463928-dab1-4fb4-9098-9701e8de6efe", "name": "Update Stats", "type": "n8n-nodes-base.googleSheets", "onError": "continueRegularOutput", "position": [ 720, 304 ], "parameters": { "columns": { "value": { "likes": "={{ $json.likes }}", "views": "={{ $json.views }}", "shares": "={{ $json.shares }}", "comments": "={{ $json.comments }}", "request_id": "={{ $json.request_id }}", "engagement_rate": "={{ $json.engagement_rate }}" }, "schema": [ { "id": "request_id", "type": "string", "display": true, "required": false, "displayName": "request_id", "defaultMatch": true, "canBeUsedToMatch": true }, { "id": "views", "type": "string", "display": true, "required": false, "displayName": "views", "defaultMatch": false, "canBeUsedToMatch": false }, { "id": "likes", "type": "string", "display": true, "required": false, "displayName": "likes", "defaultMatch": false, "canBeUsedToMatch": false }, { "id": "comments", "type": "string", "display": true, "required": false, "displayName": "comments", "defaultMatch": false, "canBeUsedToMatch": false }, { "id": "shares", "type": "string", "display": true, "required": false, "displayName": "shares", "defaultMatch": false, "canBeUsedToMatch": false }, { "id": "engagement_rate", "type": "string", "display": true, "required": false, "displayName": "engagement_rate", "defaultMatch": false, "canBeUsedToMatch": false } ], "mappingMode": "defineBelow", "matchingColumns": [ "request_id" ] }, "options": {}, "operation": "update", "sheetName": { "__rl": true, "mode": "name", "value": "Performance Log" }, "documentId": { "__rl": true, "mode": "id", "value": "={{ $('Set Config').first().json.spreadsheet_id }}" } }, "typeVersion": 4.5, "alwaysOutputData": true }, { "id": "9d9083ac-6cb6-4667-b87c-1293dafc61f8", "name": "Aggregate", "type": "n8n-nodes-base.aggregate", "position": [ 944, 304 ], "parameters": { "options": {}, "aggregate": "aggregateAllItemData" }, "typeVersion": 1 }, { "id": "89284274-5477-4607-81fc-4b1eee0d827c", "name": "Get Profile Analytics", "type": "n8n-nodes-base.httpRequest", "position": [ 1168, 304 ], "parameters": { "url": "=https://api.upload-post.com/api/analytics/{{ $('Set Config').first().json.upload_post_user }}?platforms=tiktok", "options": { "response": { "response": { "neverError": true } } }, "sendHeaders": true, "authentication": "none", "headerParameters": { "parameters": [ { "name": "Authorization", "value": "=ApiKey {{ $('Set Config').first().json.upload_post_api_key }}" } ] } }, "typeVersion": 4.2 }, { "id": "0eef627e-b5ef-4144-b23b-ad184aa60200", "name": "Read Agent Skill", "type": "n8n-nodes-base.googleSheets", "onError": "continueRegularOutput", "position": [ 1328, 304 ], "parameters": { "options": {}, "sheetName": { "__rl": true, "mode": "name", "value": "Agent Skill" }, "documentId": { "__rl": true, "mode": "id", "value": "={{ $('Set Config').first().json.spreadsheet_id }}" } }, "typeVersion": 4.5, "alwaysOutputData": true }, { "id": "5af68d2e-5097-48e7-8314-b14d058da2d7", "name": "Read Fresh Data", "type": "n8n-nodes-base.googleSheets", "onError": "continueRegularOutput", "position": [ 1520, 304 ], "parameters": { "options": {}, "sheetName": { "__rl": true, "mode": "name", "value": "Performance Log" }, "documentId": { "__rl": true, "mode": "id", "value": "={{ $('Set Config').first().json.spreadsheet_id }}" } }, "typeVersion": 4.5, "alwaysOutputData": true }, { "id": "088aa2f3-0865-4720-ac1d-3906e55926ca", "name": "Prepare Context", "type": "n8n-nodes-base.code", "position": [ 1664, 304 ], "parameters": { "jsCode": "const config = $('Set Config').first().json;\nconst sheetItems = $('Read Fresh Data').all();\n\n// Agent Skill\nlet agentSkill = \"No learnings yet. First run!\";\ntry { const s = $('Read Agent Skill').all(); if (s?.[0]?.json?.skill_content) agentSkill = s[0].json.skill_content; } catch(e) {}\n\n// Profile Analytics\nlet profile = \"Not available.\";\ntry {\n const ad = $('Get Profile Analytics').first().json;\n if (ad && !ad.error) {\n const tk = ad.tiktok || ad;\n profile = `Followers: ${tk.followers||'?'} | Impressions: ${tk.impressions||'?'} | Likes: ${tk.likes||'?'}`;\n if (tk.reach_timeseries?.length > 0) {\n profile += '\\nLast 7d views: ' + tk.reach_timeseries.slice(-7).map(d => `${d.date||'?'}:${d.value||d.views||'?'}`).join(', ');\n }\n }\n} catch(e) {}\n\n// Post History\nlet posts = \"\"; let total = 0;\nconst hasData = sheetItems?.length > 0 && sheetItems[0].json?.post_date;\nif (hasData) {\n const p = sheetItems.map(i => i.json); total = p.length;\n posts = p.map((x,i) => `Post ${i+1} (${x.post_date}): \"${x.title}\" | Views:${x.views||'?'} Likes:${x.likes||'?'} Comments:${x.comments||'?'} Shares:${x.shares||'?'} Eng:${x.engagement_rate||'?'} | Strategy: ${x.strategy_notes||'?'}`).join('\\n');\n const wv = p.filter(x => Number(x.views) > 0);\n if (wv.length > 0) {\n const avg = k => (wv.reduce((s,x) => s+Number(x[k]||0),0)/wv.length).toFixed(0);\n posts += `\\n\\nAVG: Views ${avg('views')} | Likes ${avg('likes')} | Comments ${avg('comments')}`;\n const best = [...wv].sort((a,b) => Number(b.views)-Number(a.views))[0];\n posts += `\\nBEST: \"${best.title}\" (${best.views} views) Strategy: ${best.strategy_notes}`;\n }\n} else { posts = \"FIRST POST - No history. Establish baseline!\"; }\n\nreturn { json: { agent_skill: agentSkill, profile_analytics: profile, performance_summary: posts, total_posts: total, product_name: config.product_name, product_description: config.product_description }};" }, "typeVersion": 2 }, { "id": "af4eb90b-cfd9-4678-9fe7-39ff9afc7fe2", "name": "Output Parser", "type": "@n8n/n8n-nodes-langchain.outputParserStructured", "position": [ 2096, 560 ], "parameters": { "jsonSchemaExample": "{\"title\": \"Stop posting one by one\", \"strategy_notes\": \"Testing question hooks - skill says 3x more views\", \"prompt1\": \"9:16 bold white text 'STILL POSTING ONE BY ONE?' on dark gradient, modern TikTok style\", \"prompt2\": \"9:16 clean slide 'ONE CLICK = ALL PLATFORMS' with social icons circle, gradient bg\", \"prompt3\": \"9:16 slide 'SAVE 4+ HOURS WEEKLY' warm lifestyle bg, creator at desk\", \"prompt4\": \"9:16 bold CTA 'TRY UPLOAD POST FREE' vibrant gradient, arrow down\", \"hashtags\": \"#socialmedia #contentcreator #automation #tiktokgrowth #fyp #viral #saas #marketing\", \"engagement_hook\": \"How many platforms do you post to?\"}" }, "typeVersion": 1.2 }, { "id": "263aa0a9-3cc7-4e37-a75b-b0fc286624f6", "name": "Think Tool", "type": "@n8n/n8n-nodes-langchain.toolThink", "position": [ 1984, 560 ], "parameters": {}, "typeVersion": 1 }, { "id": "617342f1-a386-47e3-8aa4-7bd58d75d892", "name": "Gemini 2.5 Pro", "type": "@n8n/n8n-nodes-langchain.lmChatGoogleGemini", "position": [ 1888, 560 ], "parameters": { "options": {}, "modelName": "models/gemini-3.1-pro-preview" }, "typeVersion": 1 }, { "id": "24667f3d-8fbc-4129-8699-59af8a9c1132", "name": "Strategy Agent", "type": "@n8n/n8n-nodes-langchain.agent", "position": [ 1888, 304 ], "parameters": { "text": "=== PRODUCT ===\n{{ $('Prepare Context').first().json.product_name }}: {{ $('Prepare Context').first().json.product_description }}\n\n=== TIKTOK PROFILE ===\n{{ $('Prepare Context').first().json.profile_analytics }}\n\n=== POST HISTORY ===\n{{ $('Prepare Context').first().json.performance_summary }}\n\n=== TASK ===\nCreate an optimized TikTok carousel using your skill + this data.\n\nReturn ONLY valid JSON:\n{\n \"title\": \"\",\n \"strategy_notes\": \"\",\n \"prompt1\": \"\",\n \"prompt2\": \"\",\n \"prompt3\": \"\",\n \"prompt4\": \"\",\n \"hashtags\": \"<8-12 hashtags>\",\n \"engagement_hook\": \"\"\n}", "options": { "systemMessage": "You are Larry, an elite TikTok growth strategist with persistent memory.\n\n=== YOUR ACCUMULATED SKILL (learnings from ALL past runs) ===\n{{ $('Prepare Context').first().json.agent_skill }}\n=== END SKILL ===\n\nCreate 4-image TikTok carousel slideshows (9:16 vertical) to promote a SaaS product.\n\nCRITICAL - Each image MUST contain visible designed TEXT:\n- Slide 1: Powerful HOOK text (big, bold, scroll-stopping)\n- Slide 2: Key feature/benefit with text overlay\n- Slide 3: Another angle/use case/proof with text\n- Slide 4: Strong CTA text\n\nApply your skill learnings. Build on winners. Avoid losers.\nOutput strictly valid compact JSON only." }, "promptType": "define", "hasOutputParser": true }, "typeVersion": 1.9 }, { "id": "ee904cb1-a478-42dd-bccc-e6b5399ca032", "name": "Set Vars", "type": "n8n-nodes-base.set", "position": [ 2240, 304 ], "parameters": { "options": {}, "assignments": { "assignments": [ { "id": "c8f58cec-81df-4d3a-9ec7-e5f360d4a42c", "name": "title", "type": "string", "value": "={{ $json.output.title }}" }, { "id": "fe06b575-9f23-49a0-b5bc-e52ada16dd79", "name": "strategy_notes", "type": "string", "value": "={{ $json.output.strategy_notes }}" }, { "id": "161e1e7a-dbc9-404b-804f-e2db57eec887", "name": "prompt1", "type": "string", "value": "={{ $json.output.prompt1 }}" }, { "id": "709d9b21-c21e-4761-bf4f-8db530275058", "name": "prompt2", "type": "string", "value": "={{ $json.output.prompt2 }}" }, { "id": "ee55fc5a-142d-4dc7-b34e-e608845ff933", "name": "prompt3", "type": "string", "value": "={{ $json.output.prompt3 }}" }, { "id": "6940ebd9-539e-4a6f-85c7-c0c2d7fe408a", "name": "prompt4", "type": "string", "value": "={{ $json.output.prompt4 }}" }, { "id": "4d17e727-2c75-4e11-a508-715f92a0c264", "name": "hashtags", "type": "string", "value": "={{ $json.output.hashtags }}" }, { "id": "e599377a-5324-40f3-b464-13e5d6aebf9e", "name": "engagement_hook", "type": "string", "value": "={{ $json.output.engagement_hook }}" } ] } }, "typeVersion": 3.4 }, { "id": "490414ec-1ebe-4d31-8870-9e92f0a621eb", "name": "Generate Image 1", "type": "n8n-nodes-base.httpRequest", "position": [ 2464, 64 ], "parameters": { "url": "https://fal.run/fal-ai/nano-banana-2", "body": "={{ JSON.stringify({ prompt: $('Set Vars').first().json.prompt1, num_images: 1, aspect_ratio: '9:16', output_format: 'png' }) }}", "method": "POST", "options": {}, "sendBody": true, "contentType": "raw", "authentication": "genericCredentialType", "rawContentType": "application/json", "genericAuthType": "httpHeaderAuth" }, "typeVersion": 4.2 }, { "id": "f7fef427-9734-4426-8cea-cab126811d62", "name": "Extract URL 1", "type": "n8n-nodes-base.splitOut", "position": [ 2656, 64 ], "parameters": { "options": {}, "fieldToSplitOut": "images" }, "typeVersion": 1 }, { "id": "2579c31e-17c0-4aa4-b964-0d065cf74668", "name": "Generate Image 2", "type": "n8n-nodes-base.httpRequest", "position": [ 2464, 224 ], "parameters": { "url": "https://fal.run/fal-ai/nano-banana-2", "body": "={{ JSON.stringify({ prompt: $('Set Vars').first().json.prompt2, num_images: 1, aspect_ratio: '9:16', output_format: 'png' }) }}", "method": "POST", "options": {}, "sendBody": true, "contentType": "raw", "authentication": "genericCredentialType", "rawContentType": "application/json", "genericAuthType": "httpHeaderAuth" }, "typeVersion": 4.2 }, { "id": "3279ac16-2265-490e-aa57-6185e20c8431", "name": "Extract URL 2", "type": "n8n-nodes-base.splitOut", "position": [ 2656, 224 ], "parameters": { "options": {}, "fieldToSplitOut": "images" }, "typeVersion": 1 }, { "id": "1e28bcc4-7eda-45c1-aabd-d3f3258691dd", "name": "Generate Image 3", "type": "n8n-nodes-base.httpRequest", "position": [ 2464, 384 ], "parameters": { "url": "https://fal.run/fal-ai/nano-banana-2", "body": "={{ JSON.stringify({ prompt: $('Set Vars').first().json.prompt3, num_images: 1, aspect_ratio: '9:16', output_format: 'png' }) }}", "method": "POST", "options": {}, "sendBody": true, "contentType": "raw", "authentication": "genericCredentialType", "rawContentType": "application/json", "genericAuthType": "httpHeaderAuth" }, "typeVersion": 4.2 }, { "id": "a9935c6f-54ea-4ce9-a2a2-7baebbed05ac", "name": "Extract URL 3", "type": "n8n-nodes-base.splitOut", "position": [ 2656, 384 ], "parameters": { "options": {}, "fieldToSplitOut": "images" }, "typeVersion": 1 }, { "id": "5d784b25-52b4-4390-b53f-8dea07a40f28", "name": "Generate Image 4", "type": "n8n-nodes-base.httpRequest", "position": [ 2464, 544 ], "parameters": { "url": "https://fal.run/fal-ai/nano-banana-2", "body": "={{ JSON.stringify({ prompt: $('Set Vars').first().json.prompt4, num_images: 1, aspect_ratio: '9:16', output_format: 'png' }) }}", "method": "POST", "options": {}, "sendBody": true, "contentType": "raw", "authentication": "genericCredentialType", "rawContentType": "application/json", "genericAuthType": "httpHeaderAuth" }, "typeVersion": 4.2 }, { "id": "1fa984cd-ef7e-4b3a-b849-4dc4340b5ece", "name": "Extract URL 4", "type": "n8n-nodes-base.splitOut", "position": [ 2656, 544 ], "parameters": { "options": {}, "fieldToSplitOut": "images" }, "typeVersion": 1 }, { "id": "b41373ce-c47f-4f4e-8453-337195544a9b", "name": "Merge Images", "type": "n8n-nodes-base.merge", "position": [ 2864, 224 ], "parameters": { "numberInputs": 4 }, "typeVersion": 3.1 }, { "id": "568262ab-b916-4112-85f5-c6b792e2a1d9", "name": "Aggregate Images", "type": "n8n-nodes-base.aggregate", "position": [ 3072, 256 ], "parameters": { "options": {}, "aggregate": "aggregateAllItemData" }, "typeVersion": 1 }, { "id": "6c53693c-13f5-4ea0-ad60-fd621882780a", "name": "Generate Description", "type": "@n8n/n8n-nodes-langchain.openAi", "position": [ 3296, 256 ], "parameters": { "modelId": { "__rl": true, "mode": "list", "value": "gpt-4.1", "cachedResultName": "GPT-4.1" }, "options": {}, "messages": { "values": [ { "role": "system", "content": "You write viral TikTok carousel descriptions. Short, punchy, emojis ok." }, { "content": "=Write TikTok description for {{ $('Set Config').first().json.product_name }}.\nHook: {{ $('Set Vars').first().json.title }}\nHashtags: {{ $('Set Vars').first().json.hashtags }}\nQuestion: {{ $('Set Vars').first().json.engagement_hook }}\n\n1.Hook 2.Value 3.CTA 4.Hashtags 5.Question\nMax 300 chars. ONLY the description." } ] } }, "typeVersion": 1.4 }, { "id": "074fcaeb-a280-4a6b-8e30-275976b0cc22", "name": "Upload to TikTok", "type": "n8n-nodes-upload-post.uploadPost", "position": [ 3632, 256 ], "parameters": { "user": "__manual_user__", "title": "={{ $json.message.content }}", "photos": "={{ $('Extract URL 1').first().json.url }},{{ $('Extract URL 2').first().json.url }},{{ $('Extract URL 3').first().json.url }},{{ $('Extract URL 4').first().json.url }}", "platform": [ "tiktok" ], "userManual": "={{ $('Set Config').first().json.upload_post_user }}", "tiktokTitle": "={{ $('Set Vars').first().json.title }}", "tiktokAutoAddMusic": true, "tiktokPhotoDescription": "={{ $json.message.content }}" }, "typeVersion": 1 }, { "id": "074de448-6e63-4521-a38b-869b636501ba", "name": "Log to Sheets", "type": "n8n-nodes-base.googleSheets", "position": [ 3792, 256 ], "parameters": { "columns": { "value": { "likes": "", "title": "={{ $('Set Vars').first().json.title }}", "views": "", "shares": "", "comments": "", "post_url": "={{ $json.post_url || '' }}", "post_date": "={{ $now.format('yyyy-MM-dd HH:mm') }}", "request_id": "={{ $json.request_id || '' }}", "description": "={{ $('Generate Description').first().json.message.content }}", "strategy_notes": "={{ $('Set Vars').first().json.strategy_notes }}", "engagement_rate": "", "prompts_summary": "={{ $('Set Vars').first().json.prompt1.substring(0,100) }}...", "platform_post_id": "={{ $json.platform_post_id || '' }}" }, "schema": [ { "id": "post_date", "type": "string", "display": true, "required": false, "displayName": "post_date", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "request_id", "type": "string", "display": true, "required": false, "displayName": "request_id", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "post_url", "type": "string", "display": true, "required": false, "displayName": "post_url", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "platform_post_id", "type": "string", "display": true, "required": false, "displayName": "platform_post_id", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "title", "type": "string", "display": true, "required": false, "displayName": "title", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "description", "type": "string", "display": true, "required": false, "displayName": "description", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "strategy_notes", "type": "string", "display": true, "required": false, "displayName": "strategy_notes", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "prompts_summary", "type": "string", "display": true, "required": false, "displayName": "prompts_summary", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "views", "type": "string", "display": true, "required": false, "displayName": "views", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "likes", "type": "string", "display": true, "required": false, "displayName": "likes", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "comments", "type": "string", "display": true, "required": false, "displayName": "comments", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "shares", "type": "string", "display": true, "required": false, "displayName": "shares", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "engagement_rate", "type": "string", "display": true, "required": false, "displayName": "engagement_rate", "defaultMatch": false, "canBeUsedToMatch": true } ], "mappingMode": "defineBelow" }, "options": {}, "operation": "append", "sheetName": { "__rl": true, "mode": "name", "value": "Performance Log" }, "documentId": { "__rl": true, "mode": "id", "value": "={{ $('Set Config').first().json.spreadsheet_id }}" } }, "typeVersion": 4.5 }, { "id": "5153b194-c65e-4d9e-a6e0-da1fd06ece9a", "name": "Update Skill", "type": "@n8n/n8n-nodes-langchain.openAi", "position": [ 4016, 256 ], "parameters": { "modelId": { "__rl": true, "mode": "list", "value": "gpt-4.1", "cachedResultName": "GPT-4.1" }, "options": {}, "messages": { "values": [ { "role": "system", "content": "You maintain a concise skill file for an AI content creator. Analyze data, write actionable learnings." }, { "content": "=== CURRENT SKILL ===\n{{ $('Prepare Context').first().json.agent_skill }}\n\n=== LATEST POST ===\nTitle: {{ $('Set Vars').first().json.title }}\nStrategy: {{ $('Set Vars').first().json.strategy_notes }}\n\n=== ALL DATA ===\n{{ $('Prepare Context').first().json.performance_summary }}\nProfile: {{ $('Prepare Context').first().json.profile_analytics }}\n\nWrite an UPDATED skill file (max 2000 chars). Sections:\n## What Works (data-backed)\n## What Doesn't Work\n## Key Metrics (averages, best post, trend)\n## Strategy Playbook (top 3 to try next)\n## Product Angles (best ways to promote)\n\nBe specific with numbers. Update existing insights, don't just append. Output ONLY the skill content." } ] } }, "typeVersion": 1.4 }, { "id": "d595715b-88ac-4b9c-9946-ce8379a6728b", "name": "Write Skill", "type": "n8n-nodes-base.googleSheets", "position": [ 4320, 256 ], "parameters": { "columns": { "value": { "id": "skill", "last_updated": "={{ $now.format('yyyy-MM-dd HH:mm') }}", "skill_content": "={{ $json.message.content }}" }, "schema": [ { "id": "id", "type": "string", "display": true, "required": false, "displayName": "id", "defaultMatch": true, "canBeUsedToMatch": true }, { "id": "skill_content", "type": "string", "display": true, "required": false, "displayName": "skill_content", "defaultMatch": false, "canBeUsedToMatch": false }, { "id": "last_updated", "type": "string", "display": true, "required": false, "displayName": "last_updated", "defaultMatch": false, "canBeUsedToMatch": false } ], "mappingMode": "defineBelow", "matchingColumns": [ "id" ] }, "options": {}, "operation": "appendOrUpdate", "sheetName": { "__rl": true, "mode": "name", "value": "Agent Skill" }, "documentId": { "__rl": true, "mode": "id", "value": "={{ $('Set Config').first().json.spreadsheet_id }}" } }, "typeVersion": 4.5 }, { "id": "1a6eae6d-042c-48d2-a8f5-c425b4d6c8c8", "name": "When clicking ‘Execute workflow’", "type": "n8n-nodes-base.manualTrigger", "position": [ -640, 480 ], "parameters": {}, "typeVersion": 1 } ], "connections": { "Set Vars": { "main": [ [ { "node": "Generate Image 1", "type": "main", "index": 0 }, { "node": "Generate Image 2", "type": "main", "index": 0 }, { "node": "Generate Image 3", "type": "main", "index": 0 }, { "node": "Generate Image 4", "type": "main", "index": 0 } ] ] }, "Aggregate": { "main": [ [ { "node": "Get Profile Analytics", "type": "main", "index": 0 } ] ] }, "Set Config": { "main": [ [ { "node": "Read Performance Log", "type": "main", "index": 0 } ] ] }, "Think Tool": { "ai_tool": [ [ { "node": "Strategy Agent", "type": "ai_tool", "index": 0 } ] ] }, "Merge Images": { "main": [ [ { "node": "Aggregate Images", "type": "main", "index": 0 } ] ] }, "Update Skill": { "main": [ [ { "node": "Write Skill", "type": "main", "index": 0 } ] ] }, "Update Stats": { "main": [ [ { "node": "Aggregate", "type": "main", "index": 0 } ] ] }, "Extract Stats": { "main": [ [ { "node": "Update Stats", "type": "main", "index": 0 } ] ] }, "Extract URL 1": { "main": [ [ { "node": "Merge Images", "type": "main", "index": 0 } ] ] }, "Extract URL 2": { "main": [ [ { "node": "Merge Images", "type": "main", "index": 1 } ] ] }, "Extract URL 3": { "main": [ [ { "node": "Merge Images", "type": "main", "index": 2 } ] ] }, "Extract URL 4": { "main": [ [ { "node": "Merge Images", "type": "main", "index": 3 } ] ] }, "Log to Sheets": { "main": [ [ { "node": "Update Skill", "type": "main", "index": 0 } ] ] }, "Output Parser": { "ai_outputParser": [ [ { "node": "Strategy Agent", "type": "ai_outputParser", "index": 0 } ] ] }, "Daily Schedule": { "main": [ [ { "node": "Set Config", "type": "main", "index": 0 } ] ] }, "Gemini 2.5 Pro": { "ai_languageModel": [ [ { "node": "Strategy Agent", "type": "ai_languageModel", "index": 0 } ] ] }, "Strategy Agent": { "main": [ [ { "node": "Set Vars", "type": "main", "index": 0 } ] ] }, "Prepare Context": { "main": [ [ { "node": "Strategy Agent", "type": "main", "index": 0 } ] ] }, "Read Fresh Data": { "main": [ [ { "node": "Prepare Context", "type": "main", "index": 0 } ] ] }, "Aggregate Images": { "main": [ [ { "node": "Generate Description", "type": "main", "index": 0 } ] ] }, "Generate Image 1": { "main": [ [ { "node": "Extract URL 1", "type": "main", "index": 0 } ] ] }, "Generate Image 2": { "main": [ [ { "node": "Extract URL 2", "type": "main", "index": 0 } ] ] }, "Generate Image 3": { "main": [ [ { "node": "Extract URL 3", "type": "main", "index": 0 } ] ] }, "Generate Image 4": { "main": [ [ { "node": "Extract URL 4", "type": "main", "index": 0 } ] ] }, "Read Agent Skill": { "main": [ [ { "node": "Read Fresh Data", "type": "main", "index": 0 } ] ] }, "Upload to TikTok": { "main": [ [ { "node": "Log to Sheets", "type": "main", "index": 0 } ] ] }, "Get Post Analytics": { "main": [ [ { "node": "Extract Stats", "type": "main", "index": 0 } ] ] }, "Generate Description": { "main": [ [ { "node": "Upload to TikTok", "type": "main", "index": 0 } ] ] }, "Read Performance Log": { "main": [ [ { "node": "Filter Posts for Stats", "type": "main", "index": 0 } ] ] }, "Get Profile Analytics": { "main": [ [ { "node": "Read Agent Skill", "type": "main", "index": 0 } ] ] }, "Filter Posts for Stats": { "main": [ [ { "node": "Get Post Analytics", "type": "main", "index": 0 } ] ] }, "When clicking ‘Execute workflow’": { "main": [ [ { "node": "Set Config", "type": "main", "index": 0 } ] ] } }, "settings": { "executionOrder": "v1" }, "active": false }