This Expense Approval & Notification Agent automates your company's expense review and communication process by intelligently evaluating expense submissions, determining budget approval status, and notifying leadership via professionally composed emails. The workflow captures expense data through a simple form submission, calculates totals, leverages AI to craft compelling business communications, and logs all transactions for audit purposes—all without manual intervention.
Key benefits include:
Ideal for: Finance teams managing departmental budgets, project managers tracking expenses, organizations requiring CEO oversight on significant expenditures, and teams seeking to streamline the expense approval workflow.
This agent is designed for finance professionals, accounting teams, and organizational leaders who need to:
Whether you're a growing startup implementing formal expense procedures or an established organization seeking automation, this workflow adapts to your approval thresholds and communication preferences.
Why it's needed: Anthropic's Claude API powers the intelligent email composition engine. Rather than using generic templates, Claude understands context and generates personalized, professional business communications that feel authentic and appropriately formal.
Setup steps:
How to obtain API keys: Your Anthropic account automatically provides API access. Ensure your account has active billing configured to avoid service interruptions. Free trial credits are available for new accounts.
Configuration in TaskAGI: Once integrated, the AI Email Composer node will automatically use Claude Sonnet 4 (the specified model). This model balances speed and sophistication, ideal for email generation. No additional configuration is needed beyond the API key authentication.
Why it's needed: Gmail integration enables direct email delivery to your CEO and stakeholders. This ensures expense approval notifications reach decision-makers immediately through their primary communication channel.
Setup steps:
How to obtain API keys: Google provides OAuth 2.0 credentials through their Cloud Console. You'll need a Google Workspace or personal Google account. The process is free; no additional charges apply for API usage within reasonable limits.
Configuration in TaskAGI: After authentication, TaskAGI can send emails from your Gmail account. The integration respects Gmail's sending limits (typically 100 emails per day for free accounts, higher for Workspace). Ensure your Gmail account has SMTP enabled and less restrictive security settings if using app passwords.
Why it's needed: Google Sheets serves as your permanent expense ledger. Every approved and flagged expense is automatically logged, creating an auditable record for financial reporting, compliance, and historical analysis.
Setup steps:
Date, Submitter, Amount, Category, Status, Notes
How to obtain API keys: Google Sheets API uses the same OAuth credentials as Gmail. No separate keys are needed if you've already set up Gmail integration.
Configuration in TaskAGI: You'll reference your Google Sheets URL in the "Log to Expense Tracker" node. The sheet must be accessible to the Google account you authenticated with. Consider creating a dedicated sheet for this workflow to keep expense data organized and separate from other documents.
These documentation nodes help you and your team understand the workflow's purpose.
"Expense Approval & CEO Notification"
"Finance Automation" and note any specific approval thresholds (e.g., "Approves expenses under $5,000 automatically")These nodes don't process data but serve as reference points in your workflow documentation.
The trigger captures expense submission data from users.
Configuration:
"Expense Submission Form"
submitter_name (Text) – Employee or department nameexpense_amount (Number) – Dollar amount of expenseexpense_category (Dropdown) – Options: Travel, Equipment, Software, Otherexpense_description (Text Area) – Detailed explanation of the expensebudget_code (Text) – Project or cost center codeExample submission:
Submitter: Sarah Chen
Amount: $3,500
Category: Software
Description: Annual license renewal for project management tool
Budget Code: PROJ-2024-001
This node processes the submitted amount and prepares it for decision logic.
Configuration:
[[nodes.3.expense_amount]] to reference the form's amount fieldtotal_expense
Example function:
return {
total: parseFloat(nodes[3].expense_amount).toFixed(2),
formatted: "$" + parseFloat(nodes[3].expense_amount).toFixed(2)
}
This is where Claude generates your professional email.
Configuration:
[[nodes.4.total]]
[[nodes.3.submitter_name]]
[[nodes.3.expense_category]]
[[nodes.3.expense_description]]
Example prompt construction:
Compose a professional business email notifying the CEO of an expense
submission. Include the amount ($[amount]), submitter ([name]), category
([category]), and brief description ([description]). The email should be
formal but approachable, suitable for executive review.
This node determines whether the expense meets approval criteria.
Configuration:
[[nodes.4.total]] < 5000
Adjust the threshold (5000) based on your organization's approval limits. Common thresholds:
These nodes prepare different messages based on approval status.
Format Approved Status (True Path):
"APPROVED"
"This expense has been automatically approved and is ready for processing."
"Process immediately"
Format Budget Warning (False Path):
"REQUIRES_REVIEW"
"This expense exceeds standard approval limits and requires executive review."
"Escalate to CEO"
This node combines both approval paths into a single data structure.
Configuration:
status (from either format node)message (from either format node)expense_data (original submission details)approval_decision (boolean: true/false)This node structures the final email body using all previous data.
Configuration:
Subject: Expense Approval Notification - [Category]
To: ceo@company.com
Body: [AI-generated email] + [Status message] + [Expense details]
Output Variables:
to – CEO email addresssubject – Descriptive subject linebody – Complete email contentThis node delivers the notification.
Configuration:
[[nodes.9.to]] (CEO email address)[[nodes.9.subject]]
[[nodes.9.body]]
Optional settings:
This node creates a permanent record.
Configuration:
[[now]] (current timestamp)[[nodes.3.submitter_name]]
[[nodes.4.total]]
[[nodes.3.expense_category]]
[[nodes.8.status]]
[[nodes.3.expense_description]]
Important: Replace the null sheet_url with your actual Google Sheets URL before activating the workflow.
1. Run a test submission:
2. Monitor the execution flow:
3. Verify email generation:
4. Confirm email delivery:
5. Validate Google Sheets logging:
✅ Successful workflow execution shows:
✅ Test with a high-value expense (above your threshold):
✅ Test with a low-value expense (below your threshold):
Congratulations! Your Expense Approval & Notification Agent is now ready to streamline your organization's financial workflows. Monitor the first few executions to ensure all integrations work smoothly, then let automation handle the routine work while your team focuses on strategic decisions.