# Unit Economics Calculator MCP for AI Agents AI Agent Connect > Unit Economics Calculator MCP helps you determine if your customer acquisition strategy is actually profitable. It connects your marketing spend to long-term revenue by running three interconnected financial models. You'll get clear numbers on your contribution margins, payback periods, and overall unit health so you can stop guessing about your growth sustainability. ## Overview - **Category:** finance - **Price:** Free - **Endpoint:** https://edge.vinkius.com/vk_preview_s1cbNLJ0UMJ5FPPlTZsmZh0hTKp65M5XdHhH7wIU/ai-agent-connect - **Tags:** ltv, cac, profitability, unit-economics, growth-metrics, financial-modeling ## Description Most growth teams hit a wall when they can't tell if their marketing spend is actually generating profit or just burning cash. It's easy to see what a customer costs to acquire, but it's much harder to figure out how long that cost takes to break even across different margins and churn rates. This gap in understanding leads to inefficient spending and unsustainable growth projections. This Connector fixes that by connecting the dots between your initial costs and your long-term revenue. Instead of manually juggling spreadsheets, you can ask your agent to run a sequence of calculations. It starts by looking at your immediate profit per billing cycle, then projects your lifetime value based on churn, and finally tells you exactly how many months it takes to recoup your acquisition costs. It's a way to turn raw numbers into a clear plan for financial health. By using this through the Vinkius catalog, you get a reliable way to stress-test your pricing and marketing spend in real-time. You'll know if a high acquisition cost is a green light or a red flag before you scale your spend. ## Tools ### calculate_contribution_margin Calculate the immediate profit generated in one billing cycle. It subtracts COGS and support costs from your gross price. ### rate_health Rate your unit economics health based on your payback period. This gives you a high-level view of your business viability. ### calculate_payback_period Calculate the exact number of months needed to recover customer acquisition costs. It uses your projected LTV and amortized CAC. ## Prompt Examples **Prompt:** ``` Our price is $150, COGS is $40, and support is $10. If our CAC is $600, how long to break even? ``` **Response:** ``` Based on your numbers, here is the breakdown: * **Monthly Contribution Margin:** $100 * **CAC:** $600 * **Payback Period:** 6 months This means it takes 6 months of subscription revenue to recover the cost of acquiring each customer. ``` **Prompt:** ``` I'm thinking of raising prices to $200 but my COGS will go up by $20. Is that a good move for our health? ``` **Response:** ``` Let's look at the new numbers: * **New Price:** $200 * **New COGS:** $60 * **New Margin:** $140 (up from $100) With a higher margin, your payback period will shorten significantly. I'd recommend running the health check to see your new rating compared to your current one. ``` **Prompt:** ``` What's the payback period if we have a $1,000 CAC and a $100 monthly margin? ``` **Response:** ``` With a $1,000 acquisition cost and a $100 monthly contribution margin, your **payback period is 10 months**. If your churn rate is high, this period could extend further, so you may want to verify your churn rate to get a more precise lifetime value. ``` ## Capabilities ### Calculate monthly contribution margins Determine your immediate profit per billing cycle by subtracting variable costs from revenue. ### Project customer lifetime value Estimate total potential revenue over time based on your margins and churn rates. ### Estimate acquisition cost payback periods Find the exact number of months required to recover your customer acquisition costs. ### Rate unit economics health Get an objective health score for your business model based on your payback period. ### Analyze profit margins per cycle See how changes in COGS or support costs impact your bottom line instantly. ## Use Cases ### Validating a new ad channel A marketer wants to know if a $400 CAC is okay for a $100 product. The agent uses calculate_contribution_margin and calculate_payback_period to show it takes 7 months to break even. ### Stress-testing a price increase A founder wants to see what happens if COGS goes up by 10% while they raise prices. The agent runs calculate_contribution_margin then rate_health to show the new profitability score. ### Pitching to investors A startup needs to prove sustainability. They ask the agent to calculate the net residual margin for their top three customer tiers to show a clear path to profit. ### Switching from annual to monthly billing A team wants to see how the change in churn affects their payback period. They use the tools to model the impact on their long-term viability. ## Benefits - Stop guessing on marketing spend by using calculate_payback_period to see the real break-even point for every new customer. - Identify pricing leaks quickly with calculate_contribution_margin to see what's left after COGS and support costs. - Get an objective health score for your business model using rate_health instead of relying on gut feelings about growth. - Model what-if scenarios like cost increases or churn spikes to see how they hit your bottom line before you scale. - Connect marketing spend to long-term revenue automatically without manual spreadsheet updates or complex formulas. - Validate new pricing tiers instantly to see which one offers the best balance of margin and customer retention. ## How It Works The bottom line is you get a clear go or no-go on your growth spend based on actual math. 1. Input your gross price, COGS per customer, and support costs. 2. Provide your customer acquisition costs and expected churn rates. 3. Get a breakdown of your payback period and net residual margin. ## Frequently Asked Questions **How does the Unit Economics Calculator help my marketing spend?** It connects your marketing costs directly to your profit margins. By calculating the payback period, it tells you exactly how many months it takes to recoup your spend, helping you decide which channels are actually worth the investment. **Can I use the Unit Economics Calculator to see if my pricing is too low?** Yes. By inputting your price and your variable costs like COGS and support, it calculates your contribution margin. If that margin is too thin to cover your acquisition costs, it's a clear sign your pricing needs adjustment. **What is a healthy payback period according to this Connector?** The Connector provides a health rating based on your specific payback period. While 'healthy' varies by industry, this tool gives you an objective score so you can benchmark your growth against standard profitability targets. **Does the Unit Economics Calculator handle different types of products?** It works for any product or service where you can define a unit price, a variable cost per unit, and a customer acquisition cost. This makes it ideal for SaaS, e-commerce, and service-based businesses. **How does this replace my manual spreadsheets?** It automates the sequence of math. Instead of you manually calculating margins, then LTV, then payback periods in a sheet, your agent does all three in one go and gives you the final numbers instantly. **Can I use the Unit Economics Calculator to stress test my churn rates?** Absolutely. You can input different churn rates to see how they impact your projected lifetime value and, ultimately, how much longer it takes to break even on your marketing spend. **What is the first step to calculating profitability?** You must first use `calculate_contribution_margin` by providing the Gross Price, COGS, and Support Cost. This establishes the core monthly profit before considering long-term effects. **How do I find out if my CAC is sustainable?** Use `calculate_payback_period`. This tool takes your Customer Acquisition Cost and the monthly contribution margin to tell you exactly how many months it will take to break even. A lower number means better unit economics. **What is the final measure of long-term value?** The most comprehensive view comes from `calculate_payback_period`. It synthesizes all inputs to provide a Net LTV Residual Margin, which is the true profit left over after paying back your CAC and accounting for churn.