Automate Event Planning & Budget Optimization with Claude AI and Google Sheets

This enterprise-grade n8n workflow automates the entire event planning lifecycle — from client briefs to final reports — using Claude AI, real-time financial data, and smart integrations. It converts raw client data into optimized, insight-driven event plans with cost savings, risk management, and automatic reporting, all with zero manual work.

Key Features

Multi-source data fusion** from Google Sheets (ClientBriefs, BudgetEstimates, ActualCosts, VendorDatabase) AI-powered orchestration* using Claude 3.5 Sonnet* for event plan optimization Automatic ROI and variance analysis** with cost-saving insights Vendor intelligence** — ranks suppliers by cost, rating, and reliability Risk engine** computes event risk (probability × impact) Auto-approval logic** for safe, high-ROI events Multi-channel delivery:** Slack + Email + Google Sheets Audit-ready:** Full JSON plan + execution logs Scalable triggers:** Webhook or daily schedule

Workflow Process

| Step | Node | Description | | ---- | --------------------------- | -------------------------------------------------------- | | 1 | Orchestrate Trigger | Runs daily at 7 AM or via webhook (/event-orchestrate) | | 2 | Read Client Brief | Loads event metadata from the ClientBriefs sheet | | 3 | Read Budget Estimates | Fetches estimated budgets and vendor data | | 4 | Read Actual Costs | Loads live cost data for comparison | | 5 | Read Vendor Database | Pulls vendor pricing, reliability, and rating | | 6 | Fuse All Data | Merges data into a unified dataset | | 7 | Data Fusion Engine | Calculates totals, variances, and validates inputs | | 8 | AI Orchestration Engine | Sends structured prompt to Claude AI for analysis | | 9 | Parse & Finalize | Extracts JSON, computes ROI, risks, and savings | | 10 | Save Orchestrated Plan | Updates OrchestratedPlans sheet with results | | 11 | Team Sync | Sends status & summary to Slack | | 12 | Executive Report | Emails final interactive plan to event planner |

Setup Instructions

1. Import Workflow

Open n8n → Workflows → Import from Clipboard Paste the JSON workflow

2. Configure Credentials

| Integration | Details | | ----------------- | -------------------------------------------------- | | Google Sheets | Service account with spreadsheet access | | Claude AI | Anthropic API key for claude-3-5-sonnet-20241022 | | Slack | Webhook or OAuth app | | Email | SMTP or Gmail OAuth credentials |

3. Update Spreadsheet IDs

Ensure your Google Sheets include:

ClientBriefs BudgetEstimates ActualCosts VendorDatabase OrchestratedPlans

4. Set Triggers

Webhook:** /webhook/event-orchestrate Schedule:** Daily at 7:00 AM

5. Run a Test

Use manual execution to confirm:

Sheet updates Slack notifications Email delivery

Google Sheets Structure

ClientBriefs

| eventId | clientName | eventType | attendees | budget | eventDate | plannerEmail | spreadsheetId | teamChannel | priority | |----------|-------------|------------|-----------|----------|------------|---------------|---------------|-------------| | EVT-2025-001 | Acme Corp | Conference | 200 | 75000 | 2025-06-15 | sarah@acme.com | 1A... | #event-orchestration | High |

BudgetEstimates

| category | item | budgetAmount | estimatedCost | vendor | | -------- | -------------- | ------------ | ------------- | ----------- | | Venue | Grand Ballroom | 20000 | 22500 | Luxe Events |

ActualCosts

| category | actualCost | | -------- | ---------- | | Venue | 23000 |

VendorDatabase

| vendorName | category | avgCost | rating | reliability | | ----------- | -------- | ------- | ------ | ----------- | | Luxe Events | Venue | 21000 | 4.8 | High |

OrchestratedPlans

Automatically filled with: eventId, savings, roi, riskLevel, status, summary, fullPlan (JSON)

System Requirements

| Requirement | Version/Access | | --------------------- | ---------------------------------------------- | | n8n | v1.50+ (LangChain supported) | | Claude AI API | claude-3-5-sonnet-20241022 | | Google Sheets API | https://www.googleapis.com/auth/spreadsheets | | Slack Webhook | Required for notifications | | Email Service | SMTP, Gmail, or SendGrid |

Optional Enhancements

Add PDF export for management reports Connect Google Calendar for event scheduling Integrate CRM (HubSpot / Salesforce) for client updates Add interactive Slack buttons for approvals Export results to Notion or Airtable Enable multi-event batch orchestration Add forecasting from past data trends

Result: A single automated system that plans, analyzes, and reports events — with full AI intelligence and zero manual work.

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