With description

python3 scripts/log_expense.py log 250000 Dining --description "Lunch with team"

With tags

python3 scripts/log_expense.py log 500000 Shopping --tags "clothes,sale" --description "New shirt"

Specify date (for backdating)

python3 scripts/log_expense.py log 1200000 Vehicle --description "Gas" --date 2026-02-15


### View monthly summary

```bash
# Current month
python3 scripts/log_expense.py summary

# Specific month
python3 scripts/log_expense.py summary 2026-02

# JSON output (for parsing)
python3 scripts/log_expense.py summary 2026-02 --json

File Organization

Expenses are stored in expenses/ directory at workspace root:

expenses/
├── 2026-01.md
├── 2026-02.md
└── 2026-03.md

Each file contains a markdown table:

# Expenses - 2026-02

| Date | Category | Amount (VND) | Description | Tags |
|------|----------|-------------|-------------|------|
| 2026-02-17 | Coffee | 45,000 | | |
| 2026-02-17 | Dining | 250,000 | Lunch with team | |
| 2026-02-17 | Shopping | 500,000 | New shirt | clothes,sale |

Workflow Examples

Log daily expenses from conversation

When the user mentions spending money:

# User: "Just paid 35k for coffee"
python3 scripts/log_expense.py log 35000 Coffee

# User: "Grabbed lunch for 120k at Phở 24"
python3 scripts/log_expense.py log 120000 Dining --description "Phở 24"

# User: "Filled up gas, 400k"
python3 scripts/log_expense.py log 400000 Vehicle --description "Gas"

Monthly review

# Get summary
python3 scripts/log_expense.py summary 2026-02

# Read the expense file to see details
cat expenses/2026-02.md

Analyze spending patterns

# Get JSON for analysis
python3 scripts/log_expense.py summary 2026-02 --json

# Compare multiple months
python3 scripts/log_expense.py summary 2026-01 --json > jan.json
python3 scripts/log_expense.py summary 2026-02 --json > feb.json

Auto Backup

Before every write, the script automatically backs up the current expense file to:

~/Documents/expenses_backup/YYYY-MM.md

Backup runs before any modification (safe even if write fails)
If the file doesn't exist yet (first entry of the month), backup is skipped
Backup is overwritten each time with the latest pre-write snapshot
This protects against accidental rm -rf or corruption of the workspace

Tips

Batch logging: User can tell you multiple expenses at once, log them all
Category consistency: Use the same category names to enable accurate summaries
Tags for filtering: Use tags for subcategories (e.g., "work", "weekend", "urgent")
Descriptions: Add context that helps identify the expense later
Regular reviews: Suggest monthly summaries to track spending patterns

Integration with Financial Goals

When tracking expenses, consider:

Budget tracking: Compare monthly totals to target budget
Spending patterns: Identify high-spend categories
Emergency fund: Track savings progress
Debt reduction: Monitor debt payment progress
Financial ratios: Calculate expenses as % of income

Script Reference

log_expense.py

Commands:

log - Add an expense entry
summary - View monthly summary

Arguments (log):

amount - Amount in VND (required)
category - Category name (required)
--description/-d - Optional description
--tags/-t - Optional comma-separated tags
--date - Optional date (YYYY-MM-DD, defaults to today)
--workspace - Optional workspace path (defaults to ~/.openclaw/workspace)

Arguments (summary):

year_month - Optional YYYY-MM (defaults to current month)
--json - Output as JSON
--workspace - Optional workspace path

Output:

Creates/updates markdown files in expenses/ directory
Prints confirmation with file location
Summary shows total, count, and breakdown by category

expense-tracker

Expense Tracker

Quick Start

Log an expense