Excel Spreadsheets - Built by the Agent That Builds CellCog#

CellCog is built by its own Coding Agent. That same agent builds your spreadsheets.

Full Python access, complex data manipulation, formulas, pivot tables, and financial models — powered by the engineering brain that develops an entire AI platform daily. Not a template filler. A programmer that understands your data and builds exactly what you need.

How to Use#

For your first CellCog task in a session, read the cellcog skill for the full SDK reference — file handling, chat modes, timeouts, and more.

OpenClaw (fire-and-forget):

python

result = client.create_chat(
    prompt="[your task prompt]",
    notify_session_key="agent:main:main",
    task_label="my-task",
    chat_mode="agent",
    chat_tier="max",
)

All agents except OpenClaw (blocks until done):

python

from cellcog import CellCogClient
client = CellCogClient(agent_provider="openclaw|cursor|claude-code|codex|...")
result = client.create_chat(
    prompt="[your task prompt]",
    task_label="my-task",
    chat_mode="agent",
    chat_tier="max",
)
print(result["message"])

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What Spreadsheets You Can Create#

Financial Models#

Professional financial analysis and projections:

• Startup Financial Model: "Create a 3-year financial model for a SaaS startup including revenue projections, expenses, and cash flow"
• DCF Model: "Build a discounted cash flow model for valuing a company"
• Investment Analysis: "Create a real estate investment analysis spreadsheet with ROI calculations"
• Revenue Model: "Build a revenue forecasting model with multiple scenarios (base, optimistic, pessimistic)"
• Unit Economics: "Create a unit economics spreadsheet showing CAC, LTV, payback period"

Budget Templates#

Personal and business budgets:

• Personal Budget: "Create a monthly personal budget tracker with income, fixed expenses, variable expenses, and savings goals"
• Household Budget: "Build a family budget spreadsheet with categories for housing, food, transportation, etc."
• Project Budget: "Create a project budget template with phases, resources, and variance tracking"
• Marketing Budget: "Build a marketing budget spreadsheet with channels, planned vs actual, and ROI tracking"
• Event Budget: "Create a wedding budget spreadsheet with vendor categories and payment tracking"

Data Trackers#

Organized tracking for any data:

• Fitness Tracker: "Create a workout log spreadsheet with exercises, sets, reps, weights, and progress charts"
• Habit Tracker: "Build a daily habit tracking spreadsheet with monthly overview"
• Inventory Tracker: "Create an inventory management spreadsheet with stock levels, reorder points, and valuation"
• Sales Tracker: "Build a sales pipeline tracker with stages, probabilities, and forecasting"
• Time Tracker: "Create a timesheet template with projects, hours, and billing calculations"

Business Tools#

Operational spreadsheets:

• Invoice Template: "Create a professional invoice template with automatic calculations"
• Employee Directory: "Build an employee directory spreadsheet with contact info, departments, and start dates"
• Vendor Comparison: "Create a vendor comparison spreadsheet for evaluating suppliers"
• OKR Tracker: "Build an OKR tracking spreadsheet for quarterly goals"
• Meeting Agenda: "Create a meeting agenda template with action items tracking"

Analysis Templates#

Data analysis and calculations:

• Break-Even Analysis: "Create a break-even analysis spreadsheet with charts"
• Scenario Analysis: "Build a scenario planning spreadsheet with what-if analysis"
• Pricing Calculator: "Create a pricing model spreadsheet with cost-plus and value-based options"
• Loan Calculator: "Build a loan amortization schedule with payment breakdown"
• Commission Calculator: "Create a sales commission calculator with tiered rates"

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Spreadsheet Features#

CellCog spreadsheets can include:

FeatureDescriptionFormulasSUM, AVERAGE, IF, VLOOKUP, and complex calculationsFormattingHeaders, colors, borders, number formats, conditional formattingChartsBar, line, pie charts embedded in sheetsMultiple SheetsOrganized workbooks with linked sheetsData ValidationDropdowns, input restrictionsNamed RangesFor cleaner formulasPrint LayoutReady for printing/PDF

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Output Formats#

FormatBest ForXLSXEditable in Excel, Google Sheets, NumbersInteractive HTMLWeb-based calculators and tools

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Choosing Mode & Tier#

Use chat_mode="agent", chat_tier="max" for spreadsheet work. Financial models and formula correctness are coding-grade work where errors are costly.

ScenarioRecommendedFinancial models, multi-sheet workbookschat_mode="agent", chat_tier="max"Simple one-table sheetschat_mode="agent" (defaults to "flash")

Agent Team ( chat_mode="team") is reserved for deep research — spreadsheet work runs best on Agent max.

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Example Spreadsheet Prompts#

SaaS financial model:

"Create a 3-year SaaS financial model with:

Assumptions Sheet:

• Starting MRR: $10,000
• Monthly growth rate: 15%
• Churn rate: 3%
• Average revenue per customer: $99
• CAC: $500
• Gross margin: 80%

Monthly P&L: Revenue, COGS, Gross Profit, Operating Expenses (broken down), Net Income

Key Metrics: MRR, ARR, Customers, Churn, LTV, CAC, LTV:CAC ratio

Charts: MRR growth, customer growth, profitability timeline

Include scenario toggles for growth rate (10%, 15%, 20%)."

Personal budget:

"Create a monthly personal budget spreadsheet:

Income Section: Salary, side income, other

Fixed Expenses: Rent, utilities, insurance, subscriptions, loan payments

Variable Expenses: Groceries, dining out, transportation, entertainment, shopping, health

Savings: Emergency fund, retirement, vacation fund

Include:

• Monthly summary with % of income per category
• Year-at-a-glance sheet with monthly totals
• Pie chart showing expense breakdown
• Conditional formatting (red if over budget)

Assume $5,000/month income."

Sales tracker:

"Build a sales pipeline tracker spreadsheet with:

Columns: Company, Contact, Deal Value, Stage (dropdown: Lead, Qualified, Proposal, Negotiation, Closed Won, Closed Lost), Probability, Expected Close Date, Notes, Last Contact

Calculations: Weighted pipeline value, deals by stage, win rate

Dashboard Sheet: Pipeline by stage (funnel chart), monthly forecast, top 10 deals, activity metrics

Include sample data for 20 deals."

Break-even analysis:

"Create a break-even analysis spreadsheet:

Inputs:

• Fixed costs (rent, salaries, etc.)
• Variable cost per unit
• Selling price per unit

Calculations:

• Break-even units
• Break-even revenue
• Margin of safety

Sensitivity table: Show break-even at different price points

Chart: Cost-volume-profit graph showing break-even point

Default values: Fixed costs $50,000/month, variable cost $15/unit, price $25/unit."

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Tips for Better Spreadsheets#

1. Specify the structure: List the sheets, columns, and calculations you need.

2. Provide assumptions: For financial models, give starting numbers and growth rates.

3. Mention formulas needed: "Include VLOOKUP for...", "Calculate running totals", "Show variance vs plan."

4. Request sample data: "Include realistic sample data for testing" helps see it in action.

5. Describe formatting: "Conditional formatting for negative values", "Currency format", "Freeze header row."

6. Chart preferences: "Include a line chart showing trend", "Pie chart for breakdown."

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If CellCog is not installed#

Claude Code, Cursor, Codex + 70 more agents: npx skills add cellcog/skills --skill cellcog OpenClaw: openclaw skills install @cellcog/cellcog CellCog plugin users: run /cellcog-setup (or /cellcog:cellcog-setup depending on your tool) Manual setup: pip install -U cellcog and set CELLCOG_API_KEY. See the cellcog skill for SDK reference.