{"workflow":{"id":14135,"name":"Track expenses via chat with Claude Haiku and Google Sheets","views":30,"recentViews":2,"totalViews":30,"createdAt":"2026-03-18T09:31:08.437Z","description":"# πŸ’° AI Expense Tracker β€” Chat to Track Spending Instantly\n\n### Track your expenses by chatting naturally. No forms, no apps β€” just type and it's saved.\n\n---\n\n## πŸ“– Description\n\nThis workflow turns a simple chat interface into a powerful personal expense tracker. Just describe your spending in plain language β€” the AI understands it, categorizes it, and saves it to Google Sheets automatically.\n\n**Example inputs the AI understands:**\n- `spent 500 on lunch`\n- `uber 150`\n- `paid 1200 electricity bill`\n- `lunch in feb 25 cost 500` ← handles past dates too\n- `netflix 499`\n- `$50 hotel booking` ← detects currency\n\nNo rigid formats. No dropdowns. Just type naturally.\n\n---\n\n## ✨ Key Features\n\n- **Natural language input** β€” type expenses exactly how you'd say them\n- **AI-powered parsing** β€” Claude Haiku extracts amount, category, date, currency automatically\n- **9 auto-detected categories** β€” Food, Transport, Shopping, Bills, Entertainment, Health, Business, Education, Other\n- **Multi-currency support** β€” INR, USD, EUR, GBP\n- **Past date handling** β€” \"lunch in feb 25 cost 500\" saves to February 2025, not today\n- **Running monthly total** β€” each row stores the cumulative month total\n- **Monthly summary** β€” type `SUMMARY` or `summary february` for any month\n- **Works on empty sheet** β€” no errors on first use\n- **Invalid input handling** β€” friendly error if no amount detected\n\n---\n\n## πŸ’¬ Commands\n\n| What you type | What happens |\n| :--- | :--- |\n| `spent 500 on lunch` | βœ… Saved: πŸ• Food & Dining β€” Lunch Β· β‚Ή500 |\n| `uber 150` | βœ… Saved: πŸš— Transport β€” Uber Β· β‚Ή150 |\n| `1200 electricity bill` | βœ… Saved: πŸ’‘ Bills & Utilities Β· β‚Ή1200 |\n| `lunch in feb 25 cost 500` | βœ… Saved to February 2025 correctly |\n| `SUMMARY` | πŸ“Š Current month report with breakdown |\n| `summary february` | πŸ“Š February report (current year) |\n| `summary february 2025` | πŸ“Š February 2025 specific report |\n| `HELP` | πŸ“– Shows all commands and categories |\n\n---\n\n## πŸ›  Setup Requirements\n\n### 1. Google Sheet\n\nCreate a new Google Sheet with these exact headers in Row 1:\n\n| Col | Header |\n| :---: | :--- |\n| A | `Date` |\n| B | `Amount` |\n| C | `Category` |\n| D | `Description` |\n| E | `Currency` |\n| F | `Month` |\n| G | `Raw Message` |\n| H | `Total` |\n\n### 2. Credentials needed\n\n| Credential | Used for | Free? |\n| :--- | :--- | :--- |\n| **Anthropic API** | Claude Haiku AI parsing | Paid (very low cost) |\n| **Google Sheets OAuth2** | Read & write expenses | Free |\n\n### 3. After importing\n\n1. Connect your **Anthropic** credential to the `Claude Haiku` node\n2. Connect your **Google Sheets** credential to all sheet nodes\n3. Update the Sheet ID in all Google Sheets nodes to point to your sheet\n4. Open the workflow chat and type your first expense\n\n---\n\n## πŸ— How It Works\n\n```\nYou type: \"spent 500 on car wash\"\n ↓\nDetect Intent β†’ classified as: expense\n ↓\nRead All Expenses β†’ loads sheet (works even if empty)\n ↓\nPrepare Data β†’ calculates existing month total\n ↓\nAI Parse Expense (Claude Haiku)\n β†’ amount: 500\n β†’ category: Transport\n β†’ description: Car wash\n β†’ date: today\n β†’ currency: INR\n ↓\nParse & Total\n β†’ derives Month from parsed date\n β†’ computes new running total\n ↓\nIs Valid? (amount > 0 and is_expense = true)\n βœ… YES β†’ Save to Sheet β†’ Reply with confirmation\n ❌ NO β†’ Ask user to include an amount\n```\n\n**Summary flow:**\n\n```\nYou type: \"summary february\"\n ↓\nDetect Intent β†’ classified as: summary\n ↓\nRead for Summary β†’ loads all rows\n ↓\nBuild Summary\n β†’ detects \"february\" in message\n β†’ filters rows by February (current year)\n β†’ calculates total, breakdown by category, daily avg\n ↓\nReturns formatted report\n```\n\n---\n\n## πŸ“Š Sample Summary Output\n\n```\nπŸ“Š March 2026 Report\n\nπŸ’³ Total: β‚Ή8,450\nπŸ“ Entries: 12\nπŸ“ˆ Daily avg: β‚Ή470\nπŸ” Top: πŸ• Food & Dining\n\nBreakdown:\nπŸ• Food & Dining: β‚Ή3,200 (38%)\nπŸš— Transport: β‚Ή1,800 (21%)\nπŸ’‘ Bills & Utilities: β‚Ή1,200 (14%)\nπŸ›οΈ Shopping: β‚Ή1,050 (12%)\n🎬 Entertainment: β‚Ή800 (9%)\nπŸ₯ Health: β‚Ή400 (5%)\n```\n\n---\n\n## πŸ“‚ Auto-Detected Categories\n\n| Emoji | Category | Example keywords |\n| :---: | :--- | :--- |\n| πŸ• | Food & Dining | lunch, dinner, restaurant, zomato, swiggy, grocery |\n| πŸš— | Transport | uber, ola, petrol, metro, flight, car wash, parking |\n| πŸ›οΈ | Shopping | amazon, flipkart, clothes, electronics, shoes |\n| πŸ’‘ | Bills & Utilities | electricity, wifi, rent, recharge, emi, gas |\n| 🎬 | Entertainment | netflix, movie, spotify, concert, gaming |\n| πŸ₯ | Health | medicine, doctor, gym, pharmacy, hospital |\n| πŸ’Ό | Business | office, software, domain, hosting, tools |\n| πŸ“š | Education | course, books, tuition, udemy, fees |\n| πŸ’° | Other | anything that doesn't match above |\n\n---\n\n## βš™οΈ Workflow Nodes\n\n| Node | Type | Purpose |\n| :--- | :--- | :--- |\n| When chat message received | Chat Trigger | Entry point |\n| Detect Intent | Code | Classify: expense / summary / help |\n| Intent Switch | Switch | Route to correct path |\n| Read All Expenses | Google Sheets | Load rows (alwaysOutputData: true) |\n| Prepare Data | Code | Compute month total, handle empty sheet |\n| AI Parse Expense | LLM Chain | Extract fields using Claude Haiku |\n| Claude Haiku | Anthropic Model | AI model for parsing |\n| Parse & Total | Code | Validate, derive month, compute total |\n| Is Valid Expense? | IF | Check amount > 0 |\n| Save Expense to Sheet | Google Sheets | Append new row |\n| Reply Saved | Code | Format confirmation message |\n| Reply Invalid | Code | Request amount from user |\n| Read for Summary | Google Sheets | Load all rows for report |\n| Build Summary | Code | Filter by month, compute breakdown |\n| Send Help | Code | Return command reference |\n\n---\n\n## πŸ”§ Customisation Ideas\n\n- **Add a budget alert** β€” warn when monthly total exceeds a set limit\n- **Telegram integration** β€” replace chat trigger with Telegram bot\n- **WhatsApp integration** β€” use Twilio WhatsApp as the input channel\n- **Weekly digest** β€” add a Schedule Trigger for automatic weekly reports\n- **Multi-user** β€” store user ID with each row to support team expense tracking\n- **Export to PDF** β€” generate monthly expense report as a PDF\n\n---\n\n## ⚠️ Important Notes\n\n- The `Read All Expenses` node has **Always Output Data** enabled β€” this is required so the flow works on an empty sheet\n- Month is derived from the **parsed date**, not today's date β€” so past-dated entries file correctly\n- The `Total` column stores the running month total at the time of each entry β€” it does not update retroactively if you delete rows\n\n---\n\n## πŸ“¦ Requirements Summary\n\n- n8n (cloud or self-hosted)\n- Anthropic API key (Claude Haiku β€” very low token usage)\n- Google account with Sheets access\n\n---\n\n*Built with n8n Β· Claude Haiku Β· Google Sheets By Nirav Gajera*","workflow":{"meta":{"instanceId":"18dd7b5b2a819da255b0592c0c20c9327ca21e0c36c31033c172c57edf46fb54","templateCredsSetupCompleted":true},"nodes":[{"id":"ff5c621a-0deb-4067-864d-04bd59b6c2e5","name":"When chat message received","type":"@n8n/n8n-nodes-langchain.chatTrigger","position":[6480,4560],"webhookId":"6a34ec84-459d-4cc4-83b6-06ae4c99dc8f","parameters":{"options":{}},"typeVersion":1.1},{"id":"9806596c-ad71-48dc-a7b4-e4ffbc992dbd","name":"Detect Intent","type":"n8n-nodes-base.code","position":[6704,4560],"parameters":{"jsCode":"\nconst chatInput = ($input.first().json.chatInput || $input.first().json.input || '').trim();\nconsole.log('Input:', chatInput);\nconst isSummary = /\\b(summary|report|total|spending|how much|breakdown|stats)\\b/i.test(chatInput);\nconst isHelp = /^(\\?|help|\\/help)$/i.test(chatInput);\nreturn [{ json: {\n chat_input: chatInput,\n intent: isSummary ? 'summary' : isHelp ? 'help' : 'expense'\n}}];\n"},"typeVersion":2},{"id":"9387f59f-2ce3-4d22-b8a8-7e48032f3ca2","name":"Intent Switch","type":"n8n-nodes-base.switch","position":[6928,4544],"parameters":{"rules":{"values":[{"conditions":{"options":{"leftValue":"","caseSensitive":false,"typeValidation":"loose"},"combinator":"and","conditions":[{"id":"i1","operator":{"type":"string","operation":"equals"},"leftValue":"={{ $json.intent }}","rightValue":"expense"}]}},{"conditions":{"options":{"leftValue":"","caseSensitive":false,"typeValidation":"loose"},"combinator":"and","conditions":[{"id":"i2","operator":{"type":"string","operation":"equals"},"leftValue":"={{ $json.intent }}","rightValue":"summary"}]}},{"conditions":{"options":{"leftValue":"","caseSensitive":false,"typeValidation":"loose"},"combinator":"and","conditions":[{"id":"i3","operator":{"type":"string","operation":"equals"},"leftValue":"={{ $json.intent }}","rightValue":"help"}]}}]},"options":{}},"typeVersion":3.2},{"id":"57ea0ffb-1a76-4f6c-8e60-0e7619c7f4a7","name":"Read All Expenses","type":"n8n-nodes-base.googleSheets","position":[7152,4368],"parameters":{"options":{},"sheetName":{"__rl":true,"mode":"list","value":"gid=0","cachedResultUrl":"https://docs.google.com/spreadsheets/d/1n7izUA8ACWfN-XqwOQkEkZ6lspUXsY1PMlmko67tLSg/edit#gid=0","cachedResultName":"Sheet1"},"documentId":{"__rl":true,"mode":"list","value":"1n7izUA8ACWfN-XqwOQkEkZ6lspUXsY1PMlmko67tLSg","cachedResultUrl":"https://docs.google.com/spreadsheets/d/1n7izUA8ACWfN-XqwOQkEkZ6lspUXsY1PMlmko67tLSg/edit?usp=drivesdk","cachedResultName":"Expense track"}},"typeVersion":4.5,"alwaysOutputData":true},{"id":"b9f18554-7c19-4969-86de-0a81be8c53d2","name":"Prepare Data","type":"n8n-nodes-base.code","position":[7376,4368],"parameters":{"jsCode":"\n// This node ALWAYS outputs data regardless of how many rows the sheet has\n// Fixes: \"No item to return\" when sheet is empty\n\nconst allRows = $input.all();\nconst chatInput = $('Detect Intent').first().json.chat_input;\n\n// Calculate current month total from existing rows (0 if empty)\nconst now = new Date();\nconst currentMonth = now.toLocaleString('en-US', {month:'long'}) + ' ' + now.getFullYear();\n\nconst monthTotal = allRows\n .filter(r => (r.json['Month'] || '') === currentMonth)\n .reduce((sum, r) => sum + parseFloat(r.json['Amount'] || 0), 0);\n\nconsole.log('Rows in sheet:', allRows.length, '| Month total so far:', monthTotal);\n\n// Always return exactly 1 item so flow never stops\nreturn [{ json: {\n chat_input: chatInput,\n month_total: monthTotal,\n current_month: currentMonth,\n row_count: allRows.length\n}}];\n"},"typeVersion":2},{"id":"a433bab2-5943-49d2-a770-b75ecd7baa62","name":"AI Parse Expense","type":"@n8n/n8n-nodes-langchain.chainLlm","position":[7600,4368],"parameters":{"text":"=You are an expense parser. Extract expense details from this message and return ONLY a JSON object, nothing else.\n\nMessage: \"{{ $('Detect Intent').first().json.chat_input }}\"\nToday: {{ new Date().toISOString().split('T')[0] }}\n\nReturn ONLY this JSON:\n{\"amount\": , \"description\": \"<2-4 words>\", \"category\": \"\", \"currency\": \"\", \"date\": \"\", \"is_expense\": }\n\nRules:\n- If the message is clearly an expense with an amount β†’ is_expense: true\n- If no amount can be found β†’ is_expense: false\n- currency default: INR\n- date default: today\n\nExamples:\n\"spent 500 on car wash\" β†’ {\"amount\":500,\"description\":\"Car wash\",\"category\":\"Transport\",\"currency\":\"INR\",\"date\":\"{{ new Date().toISOString().split('T')[0] }}\",\"is_expense\":true}\n\"test 500\" β†’ {\"amount\":500,\"description\":\"Test\",\"category\":\"Other\",\"currency\":\"INR\",\"date\":\"{{ new Date().toISOString().split('T')[0] }}\",\"is_expense\":true}\n\"lunch 450\" β†’ {\"amount\":450,\"description\":\"Lunch\",\"category\":\"Food & Dining\",\"currency\":\"INR\",\"date\":\"{{ new Date().toISOString().split('T')[0] }}\",\"is_expense\":true}\n\"hello\" β†’ {\"amount\":0,\"description\":\"\",\"category\":\"Other\",\"currency\":\"INR\",\"date\":\"{{ new Date().toISOString().split('T')[0] }}\",\"is_expense\":false}\n\nJSON only. No explanation.","promptType":"define"},"typeVersion":1.4},{"id":"627fd6e3-2232-4f76-bafe-a4b01fbc0e51","name":"Claude Haiku","type":"@n8n/n8n-nodes-langchain.lmChatAnthropic","position":[7744,4544],"parameters":{"model":{"__rl":true,"mode":"list","value":"claude-haiku-4-5-20251001","cachedResultName":"Claude Haiku 4.5"},"options":{}},"typeVersion":1.3},{"id":"218d3c40-8eb1-4dd8-b1b9-8dc01fa525b0","name":"Parse & Total","type":"n8n-nodes-base.code","position":[7952,4368],"parameters":{"jsCode":"const rawText = ($json.text || $json.output || '').trim();\nconst prepared = $('Prepare Data').first().json;\nconst chatInput = prepared.chat_input;\nconsole.log('AI response:', rawText);\n\nlet parsed = null;\ntry { parsed = JSON.parse(rawText); } catch(e) {}\nif (!parsed) {\n try { const m = rawText.match(/\\{[\\s\\S]*\\}/); if(m) parsed = JSON.parse(m[0]); } catch(e) {}\n}\n\nif (!parsed || !parsed.is_expense || !parsed.amount || parseFloat(parsed.amount) <= 0) {\n return [{ json: {\n valid: false,\n reply: `I couldn't identify an expense amount in that message.\\n\\nPlease include an amount, like:\\nβ€’ \"spent 500 on lunch\"\\nβ€’ \"uber 150\"\\nβ€’ \"1200 electricity bill\"`\n }}];\n}\n\nconst emo = {'Food & Dining':'πŸ•','Transport':'πŸš—','Shopping':'πŸ›οΈ','Bills & Utilities':'πŸ’‘','Entertainment':'🎬','Health':'πŸ₯','Business':'πŸ’Ό','Education':'πŸ“š','Other':'πŸ’°'};\nconst cat = parsed.category || 'Other';\nconst amount = parseFloat(parsed.amount);\nconst currency = parsed.currency || 'INR';\nconst symbol = currency === 'INR' ? 'β‚Ή' : currency + ' ';\nconst dateStr = parsed.date || new Date().toISOString().split('T')[0];\n\n// Derive month from parsed date (not today)\nconst parsedDate = new Date(dateStr);\nconst entryMonth = parsedDate.toLocaleString('en-US', {month:'long'}) + ' ' + parsedDate.getFullYear();\n\n// Running total for that specific month\nconst allRows = $('Read All Expenses').all();\nconst entryMonthTotal = allRows\n .filter(r => (r.json['Month'] || '') === entryMonth)\n .reduce((sum, r) => sum + parseFloat(r.json['Amount'] || 0), 0);\nconst newTotal = entryMonthTotal + amount;\n\nconsole.log(`Saving: ${symbol}${amount} | ${cat} | ${parsed.description} | Month: ${entryMonth} | Total: ${newTotal}`);\n\nreturn [{ json: {\n valid: true,\n Date: dateStr,\n Amount: amount,\n Category: cat,\n Description: parsed.description || chatInput,\n Currency: currency,\n Month: entryMonth,\n \"Raw Message\": chatInput,\n Total: newTotal,\n _display: `${emo[cat]||'πŸ’°'} *${cat}* β€” ${parsed.description || chatInput}\\nπŸ’³ ${symbol}${amount}\\nπŸ“… ${dateStr}\\nπŸ“Š ${entryMonth} total: ${symbol}${newTotal.toFixed(0)}`\n}}];"},"typeVersion":2},{"id":"2a720602-ff73-44f5-9669-986e57be1d4d","name":"Is Valid Expense?","type":"n8n-nodes-base.if","position":[8176,4368],"parameters":{"options":{},"conditions":{"options":{"leftValue":"","caseSensitive":false,"typeValidation":"loose"},"combinator":"and","conditions":[{"id":"v1","operator":{"type":"boolean","operation":"equals","rightType":"boolean"},"leftValue":"={{ $json.valid }}","rightValue":true}]}},"typeVersion":2.1},{"id":"52bdb900-a6c1-4676-83fb-c34f63ea9434","name":"Save Expense to Sheet","type":"n8n-nodes-base.googleSheets","position":[8400,4272],"parameters":{"columns":{"value":{"Date":"={{ $json.Date }}","Month":"={{ $json.Month }}","Total":"={{ $json.Total }}","Amount":"={{ $json.Amount }}","Category":"={{ $json.Category }}","Currency":"={{ $json.Currency }}","Description":"={{ $json.Description }}","Raw Message":"={{ $json['Raw Message'] }}"},"schema":[{"id":"Date","type":"string","display":true,"required":false,"displayName":"Date","defaultMatch":false,"canBeUsedToMatch":true},{"id":"Amount","type":"string","display":true,"required":false,"displayName":"Amount","defaultMatch":false,"canBeUsedToMatch":true},{"id":"Category","type":"string","display":true,"required":false,"displayName":"Category","defaultMatch":false,"canBeUsedToMatch":true},{"id":"Description","type":"string","display":true,"required":false,"displayName":"Description","defaultMatch":false,"canBeUsedToMatch":true},{"id":"Currency","type":"string","display":true,"required":false,"displayName":"Currency","defaultMatch":false,"canBeUsedToMatch":true},{"id":"Month","type":"string","display":true,"required":false,"displayName":"Month","defaultMatch":false,"canBeUsedToMatch":true},{"id":"Raw Message","type":"string","display":true,"required":false,"displayName":"Raw Message","defaultMatch":false,"canBeUsedToMatch":true},{"id":"Total","type":"string","display":true,"required":false,"displayName":"Total","defaultMatch":false,"canBeUsedToMatch":true}],"mappingMode":"defineBelow","matchingColumns":[],"attemptToConvertTypes":false,"convertFieldsToString":false},"options":{},"operation":"append","sheetName":{"__rl":true,"mode":"list","value":"gid=0","cachedResultUrl":"https://docs.google.com/spreadsheets/d/1n7izUA8ACWfN-XqwOQkEkZ6lspUXsY1PMlmko67tLSg/edit#gid=0","cachedResultName":"Sheet1"},"documentId":{"__rl":true,"mode":"list","value":"1n7izUA8ACWfN-XqwOQkEkZ6lspUXsY1PMlmko67tLSg","cachedResultUrl":"https://docs.google.com/spreadsheets/d/1n7izUA8ACWfN-XqwOQkEkZ6lspUXsY1PMlmko67tLSg/edit?usp=drivesdk","cachedResultName":"Expense track"}},"typeVersion":4.5},{"id":"de6afe46-3c00-459c-85e4-8cb613e5714b","name":"Reply Saved","type":"n8n-nodes-base.code","position":[8624,4272],"parameters":{"jsCode":"\nconst d = $('Parse & Total').first().json;\nreturn [{ json: { output: `βœ… Expense saved!\\n\\n${d._display}` }}];\n"},"typeVersion":2},{"id":"7d347763-8d31-48c4-aba7-f7ed6f332b6d","name":"Reply Invalid","type":"n8n-nodes-base.code","position":[8400,4464],"parameters":{"jsCode":"\nconst d = $('Parse & Total').first().json;\nreturn [{ json: { output: d.reply || \"Please include an amount in your message.\" }}];\n"},"typeVersion":2},{"id":"e8261ff4-b303-47fd-a0f6-997f27f7b037","name":"Read for Summary","type":"n8n-nodes-base.googleSheets","position":[7264,4736],"parameters":{"options":{},"sheetName":{"__rl":true,"mode":"list","value":"gid=0","cachedResultUrl":"https://docs.google.com/spreadsheets/d/1n7izUA8ACWfN-XqwOQkEkZ6lspUXsY1PMlmko67tLSg/edit#gid=0","cachedResultName":"Sheet1"},"documentId":{"__rl":true,"mode":"list","value":"1n7izUA8ACWfN-XqwOQkEkZ6lspUXsY1PMlmko67tLSg","cachedResultUrl":"https://docs.google.com/spreadsheets/d/1n7izUA8ACWfN-XqwOQkEkZ6lspUXsY1PMlmko67tLSg/edit?usp=drivesdk","cachedResultName":"Expense track"}},"typeVersion":4.5,"alwaysOutputData":true},{"id":"5da81e46-54f5-434c-bd13-21e6c8d1c00a","name":"Build Summary","type":"n8n-nodes-base.code","position":[7472,4736],"parameters":{"jsCode":"const rows = $input.all();\nconst now = new Date();\nconst chatInput = $('Detect Intent').first().json.chat_input;\n\n// Detect if user asked for specific month\nconst monthNames = ['january','february','march','april','may','june','july','august','september','october','november','december'];\nlet targetMonth = null;\n\nconst lower = chatInput.toLowerCase();\nfor (const m of monthNames) {\n if (lower.includes(m)) {\n const yearMatch = lower.match(/20(\\d{2})/);\n const shortYearMatch = lower.match(/\\b(\\d{2})\\b/);\n let year = now.getFullYear();\n if (yearMatch) year = parseInt(yearMatch[0]);\n else if (shortYearMatch) year = 2000 + parseInt(shortYearMatch[1]);\n targetMonth = m.charAt(0).toUpperCase() + m.slice(1) + ' ' + year;\n break;\n }\n}\n\nif (!targetMonth) {\n targetMonth = now.toLocaleString('en-US', {month:'long'}) + ' ' + now.getFullYear();\n}\n\nconsole.log('Summary for month:', targetMonth);\n\nconst thisMonth = rows.filter(r => (r.json['Month'] || '') === targetMonth);\n\nif (rows.length === 0 || thisMonth.length === 0) {\n return [{ json: { output: `πŸ“Š No expenses found for *${targetMonth}*.\\n\\nTry: SUMMARY or \"summary march\"` }}];\n}\n\nconst total = thisMonth.reduce((s,r) => s + parseFloat(r.json['Amount']||0), 0);\nconst byCategory = {};\nfor (const r of thisMonth) {\n const cat = r.json['Category'] || 'Other';\n byCategory[cat] = (byCategory[cat]||0) + parseFloat(r.json['Amount']||0);\n}\nconst sorted = Object.entries(byCategory).sort((a,b) => b[1]-a[1]);\nconst emo = {'Food & Dining':'πŸ•','Transport':'πŸš—','Shopping':'πŸ›οΈ','Bills & Utilities':'πŸ’‘','Entertainment':'🎬','Health':'πŸ₯','Business':'πŸ’Ό','Education':'πŸ“š','Other':'πŸ’°'};\nconst lines = sorted.map(([c,a]) => `${emo[c]||'πŸ’°'} ${c}: β‚Ή${a.toFixed(0)} (${((a/total)*100).toFixed(0)}%)`).join('\\n');\n\nreturn [{ json: { output:\n `πŸ“Š *${targetMonth} Report*\\n\\n` +\n `πŸ’³ *Total: β‚Ή${total.toFixed(0)}*\\n` +\n `πŸ“ Entries: ${thisMonth.length}\\n` +\n `πŸ“ˆ Daily avg: β‚Ή${(total/now.getDate()).toFixed(0)}\\n` +\n `πŸ” Top: ${emo[sorted[0]?.[0]]||'πŸ’°'} ${sorted[0]?.[0]}\\n\\n` +\n `*Breakdown:*\\n${lines}`\n}}];"},"typeVersion":2},{"id":"885991be-8d6f-49f5-b742-c57e3da0aaa3","name":"Send Help","type":"n8n-nodes-base.code","position":[7152,4976],"parameters":{"jsCode":"\nreturn [{ json: { output:\n`πŸ’° *Expense Tracker β€” Commands*\n\nπŸ“ *Add expense (just type naturally):*\nβ€’ \"spent 500 on lunch\"\nβ€’ \"paid 1200 electricity bill\"\nβ€’ \"uber 150\"\nβ€’ \"test 500\"\nβ€’ \"β‚Ή450 groceries\"\nβ€’ \"netflix 499\"\n\nπŸ“Š *Monthly report:*\nType: SUMMARY\n\nπŸ’± *Currencies:* β‚ΉINR $USD €EUR Β£GBP\n\nπŸ“‚ *Auto-detected categories:*\nπŸ• Food & Dining πŸš— Transport\nπŸ›οΈ Shopping πŸ’‘ Bills & Utilities\n🎬 Entertainment πŸ₯ Health\nπŸ’Ό Business πŸ“š Education πŸ’° Other`\n}}];\n"},"typeVersion":2},{"id":"fcb94238-8ccf-4b7f-9dff-c6813d5eecb7","name":"Overview","type":"n8n-nodes-base.stickyNote","position":[6128,3968],"parameters":{"width":476,"height":508,"content":"## πŸ’° AI Expense Tracker\nTrack expenses by chatting naturally.\n\n**Just type your expense:**\n_\"spent 500 on lunch\"_\n_\"uber 150\"_\n_\"1200 electricity bill\"_\n\n**Commands:**\nβ€’ `SUMMARY` β€” current month report\nβ€’ `summary february` β€” specific month\nβ€’ `HELP` β€” all commands\n\n**Currencies:** β‚Ή INR Β· $ USD Β· € EUR Β· Β£ GBP"},"typeVersion":1},{"id":"fc55f4ca-d4d0-4f3d-aed3-4cf071cd0919","name":"Trigger Note","type":"n8n-nodes-base.stickyNote","position":[6192,4512],"parameters":{"color":5,"width":424,"height":196,"content":"## 1️⃣ Entry Point\nReceives every chat message.\nPasses `chatInput` to next node."},"typeVersion":1},{"id":"fd4f6cce-59fc-4a26-8976-fb13377c9798","name":"Intent Note","type":"n8n-nodes-base.stickyNote","position":[6624,4288],"parameters":{"color":5,"height":424,"content":"## 2️⃣ Detect Intent\nReads the message and classifies:\nβ€’ **expense** β€” anything with an amount\nβ€’ **summary** β€” report/total/breakdown\nβ€’ **help** β€” help/?"},"typeVersion":1},{"id":"452c8436-94d9-4e03-91a7-50e2406911db","name":"Switch Note","type":"n8n-nodes-base.stickyNote","position":[6880,4288],"parameters":{"color":5,"width":220,"height":430,"content":"## 3️⃣ Routes to 3 paths\n**Output 0** β†’ Expense flow\n**Output 1** β†’ Summary flow\n**Output 2** β†’ Help message"},"typeVersion":1},{"id":"29e8945f-d2ce-40c9-9730-8e63edd4a359","name":"Read Note","type":"n8n-nodes-base.stickyNote","position":[7104,4080],"parameters":{"color":6,"width":204,"height":456,"content":"## 4️⃣ Read Sheet\nLoads all existing rows.\n`alwaysOutputData: true` ensures\nflow continues even if sheet is empty."},"typeVersion":1},{"id":"fbf91c41-741b-49c3-865b-471c296d0737","name":"Prepare Note","type":"n8n-nodes-base.stickyNote","position":[7312,4080],"parameters":{"color":6,"width":220,"height":450,"content":"## 5️⃣ Prepare Data\nComputes running month total\nfrom existing rows.\nAlways outputs 1 item β†’ flow\nnever stops on empty sheet."},"typeVersion":1},{"id":"fe8321dd-c9c0-4733-a70c-ad759db0bf8f","name":"AI Note","type":"n8n-nodes-base.stickyNote","position":[7552,4080],"parameters":{"color":6,"width":300,"height":454,"content":"## 6️⃣ AI Parse\nClaude Haiku reads the message\nand extracts:\nβ€’ amount Β· description\nβ€’ category Β· currency Β· date\nβ€’ is_expense (true/false)\n\nReturns clean JSON only."},"typeVersion":1},{"id":"740ca285-5709-4730-a206-0572bdb160ff","name":"Parse Note","type":"n8n-nodes-base.stickyNote","position":[7872,4080],"parameters":{"color":6,"width":230,"height":450,"content":"## 7️⃣ Parse & Total\nValidates AI response.\nDerives Month from parsed date\n(not today β€” handles past entries).\nCalculates running monthly total."},"typeVersion":1},{"id":"00edd05c-dcd0-437f-9c4a-c5c1a994680e","name":"Valid Note","type":"n8n-nodes-base.stickyNote","position":[8112,4080],"parameters":{"color":6,"width":212,"height":452,"content":"## 8️⃣ Valid?\nβœ… TRUE β†’ Save to sheet\n❌ FALSE β†’ Ask user\nto add an amount"},"typeVersion":1},{"id":"decba3df-1e53-4a14-9c87-bdc3a9303fca","name":"Save Note","type":"n8n-nodes-base.stickyNote","position":[8352,4064],"parameters":{"color":6,"width":492,"height":536,"content":"## 9️⃣ Save + Reply\nAppends new row to sheet.\nReplies with confirmation:\nβœ… Category Β· Amount Β· Date\nπŸ“Š Running month total"},"typeVersion":1},{"id":"9ad784c3-e3f3-41eb-85a7-72f6d3c475a0","name":"Summary Note","type":"n8n-nodes-base.stickyNote","position":[7104,4560],"parameters":{"color":2,"width":596,"height":358,"content":"## πŸ“Š SUMMARY FLOW\nReads all rows β†’ filters by month.\nDetects specific month from message\n_(e.g. \"summary february 2026\")_\nDefaults to current month.\nShows total, breakdown, daily avg."},"typeVersion":1},{"id":"a1a82af4-5888-4681-8c82-1465c2eff8b0","name":"Sheet Columns","type":"n8n-nodes-base.stickyNote","position":[6144,4288],"parameters":{"color":7,"width":200,"height":180,"content":"## πŸ“‹ Sheet Columns\nA: Date\nB: Amount\nC: Category\nD: Description\nE: Currency\nF: Month\nG: Raw Message\nH: Total _(running monthly)_"},"typeVersion":1}],"pinData":{},"connections":{"Claude Haiku":{"ai_languageModel":[[{"node":"AI Parse Expense","type":"ai_languageModel","index":0}]]},"Prepare Data":{"main":[[{"node":"AI Parse Expense","type":"main","index":0}]]},"Detect Intent":{"main":[[{"node":"Intent Switch","type":"main","index":0}]]},"Intent Switch":{"main":[[{"node":"Read All Expenses","type":"main","index":0}],[{"node":"Read for Summary","type":"main","index":0}],[{"node":"Send Help","type":"main","index":0}]]},"Parse & Total":{"main":[[{"node":"Is Valid Expense?","type":"main","index":0}]]},"AI Parse Expense":{"main":[[{"node":"Parse & Total","type":"main","index":0}]]},"Read for Summary":{"main":[[{"node":"Build Summary","type":"main","index":0}]]},"Is Valid Expense?":{"main":[[{"node":"Save Expense to Sheet","type":"main","index":0}],[{"node":"Reply Invalid","type":"main","index":0}]]},"Read All Expenses":{"main":[[{"node":"Prepare Data","type":"main","index":0}]]},"Save Expense to Sheet":{"main":[[{"node":"Reply Saved","type":"main","index":0}]]},"When chat message received":{"main":[[{"node":"Detect Intent","type":"main","index":0}]]}}},"lastUpdatedBy":1,"workflowInfo":{"nodeCount":27,"nodeTypes":{"n8n-nodes-base.if":{"count":1},"n8n-nodes-base.code":{"count":7},"n8n-nodes-base.switch":{"count":1},"n8n-nodes-base.stickyNote":{"count":12},"n8n-nodes-base.googleSheets":{"count":3},"@n8n/n8n-nodes-langchain.chainLlm":{"count":1},"@n8n/n8n-nodes-langchain.chatTrigger":{"count":1},"@n8n/n8n-nodes-langchain.lmChatAnthropic":{"count":1}}},"status":"published","readyToDemo":null,"user":{"name":"Nirav Gajera","username":"niravgajera","bio":"Full-stack Developer | PHP | Laravel | Vue.js | CodeIgniter | Nova | AWS | AI Automation 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