ROAS Calculator MCP. Know if ad spending actually makes money.
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The ROAS Calculator determines your Return on Ad Spend across every channel, giving you a concrete profit number instead of just an ad metric.
It helps you set safe spending limits by comparing current performance against industry standards and calculating your absolute financial break-even point.
What your AI agents can do
Calculate break even roas
Calculates the minimum ROAS required to cover all costs based on your contribution margin percentage.
Calculate roas
Provides a calculation of Return on Ad Spend (ROAS) given total media spend and source revenue, with optional campaign breakdowns.
Get target benchmark
Retrieves the target ROAS benchmark for your specific type of business.
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Supported MCP Clients
OAuth 2.0 Compatible Gemini Waiting for input…
ROAS Calculator MCP with 3 Tools
Use these tools to calculate current ad performance, set market expectations, and establish the minimum ROAS required for profitability.
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Start using ROAS Calculator on Vinkius019ec7e6calculate break even roas
Calculates the minimum ROAS required to cover all costs based on your contribution margin percentage.
019ec7e6calculate roas
Provides a calculation of Return on Ad Spend (ROAS) given total media spend and source revenue, with optional campaign breakdowns.
019ec7e6get target benchmark
Retrieves the target ROAS benchmark for your specific type of business.
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Works with Claude, ChatGPT, Cursor, and more
The Model Context Protocol standardizes how applications expose capabilities to LLMs. Instead of operating in isolation, your AI gains direct access to external platforms, live data, and real-world actions through secure, standardized connections.
This server provides 3 capabilities that interface natively with Claude, ChatGPT, Cursor, and any MCP client. No middleware. No custom integration required.
Most businesses spend time wrestling with fragmented data across multiple spreadsheets and dashboards.
Today, setting an ad budget means pulling revenue figures from one platform, costs from another, and then trying to manually compare that against a general industry average pulled into a third spreadsheet. This process is slow; it's prone to copy-paste errors, and the insights are always lagging.
With this MCP, you feed everything into one place. You get immediate visibility on your total ROAS and can instantly see how that number stacks up against external market standards without leaving the chat window. The output isn't a messy sheet; it’s an actionable profit verdict.
The ROAS Calculator delivers three specific, interlocking financial answers.
Instead of just seeing raw revenue numbers, you get the hard truth: what your minimum required ROAS must be to simply cover costs. This calculation forces you to confront the contribution margin percentage—the actual profit left after all marginal expenses are paid.
The difference now is that your spending decisions aren't based on guesswork or vanity metrics; they're anchored by a measurable, mathematically proven financial floor.
What you can do with this MCP connector
Figuring out if media spend actually makes money is tough. Most companies struggle to connect what they paid for ads directly to the long-term revenue it generates, leaving them guessing when scaling budgets. This MCP solves that by systematically linking three crucial calculations: current performance, external goals, and minimum costs.
You first run calculate_roas with your media spend and attributed revenue; this gives you a detailed look at how each campaign is performing right now. Next, use get_target_benchmark to see what the market expects for your specific type of business—this sets an external goal. Finally, running calculate_break_even_roas tells you the absolute minimum ROAS required just to cover all costs.
The result isn't a number; it's an actionable blueprint. Because this involves sensitive financial data, every single tool call is logged and cryptographically signed by Vinkius, giving your team a tamper-proof audit trail of exactly where every dollar came from and went. This full visibility means nothing happens in the dark.
019ec7e6-fa08-738f-9865-22cf9ccc18f6 
How ROAS Calculator MCP Works
- 1 Start by feeding the MCP your total media ad spend and the corresponding attributed revenue into
calculate_roasto get a performance baseline. - 2 Next, use
get_target_benchmarkwith your business type (like SaaS or E-commerce) to pull the industry's minimum acceptable ROAS goal. - 3 Finally, input your contribution margin percentage into
calculate_break_even_roasto calculate the absolute floor—the required ROAS just to break even.
The bottom line is that you get a full financial picture: what you are doing now, where you should be going, and the minimum line you can't cross without losing money.
Who Is ROAS Calculator MCP For?
Marketing Directors, Finance Analysts, and E-commerce Owners. You're the person who wakes up in the morning seeing dashboards full of numbers but no clear path forward—you need to know if your spending is profitable or just busy work.
Uses this MCP daily to run calculate_roas for weekly reports, quickly identifying which ad channels are underperforming relative to the overall goal.
Runs calculate_break_even_roas whenever cost structures change. This tells them exactly how much revenue is needed just to cover overhead, regardless of market trends.
Needs to establish a reliable spending guardrail. They use get_target_benchmark first, then confirm their own profitability with the other calculations, setting realistic goals for growth.
What Changes When You Connect
- Stop guessing with
calculate_roasto get a true ROAS metric, giving you clear performance numbers by channel or campaign. - Use
get_target_benchmarkto instantly compare your results against industry best practices for your business type. - Establish financial safety nets.
calculate_break_even_roastells you the absolute minimum required revenue just to break even on costs. - Systematically link spending, goals, and profit floors in one automated process instead of juggling spreadsheets.
- Get a complete audit trail for every calculation run through Vinkius's secure logging system.
Real-World Use Cases
Reviewing Quarterly Ad Performance
The Marketing Director needs to know if the last quarter’s $100k ad spend yielding $450k in revenue was enough. They run calculate_roas and find a 4.5x ROAS, which looks good but they need confirmation it meets market standards.
Setting Up New Campaign Budgets
Before spending extra money on Instagram, the E-commerce Owner first checks get_target_benchmark for their region. This sets a realistic minimum goal (e.g., 3.5x), allowing them to budget upward only when justified.
Adapting to Margin Changes
If the Cost of Goods Sold suddenly increases, the Finance Analyst immediately runs calculate_break_even_roas with the new margin. This instantly updates the spending floor, preventing overspending before it happens.
Comparing Campaign Profitability
A user wants to see if Google Ads or Facebook delivered better value for a $20k spend. They use calculate_roas with grouping enabled to break down the revenue and ROAS side-by-side.
The Tradeoffs
Relying on only one metric
The user only calculates current performance using calculate_roas and assumes that number is enough for budgeting. They ignore market reality or cost increases.
→
Always cross-check your ROAS against two things: first, run get_target_benchmark to see the industry goal; second, run calculate_break_even_roas to find your absolute financial floor.
Ignoring contribution margins
The user assumes 100% of revenue is profit and bases budgets on that. They forget about COGS or operational costs.
→
Don't guess at your safety net. Use calculate_break_even_roas with the accurate contribution margin percentage to establish a realistic minimum target.
Using outdated benchmarks
The user relies on an old, general industry benchmark without factoring in their specific market niche or current cost structure.
→
First, use get_target_benchmark for your business type. Then, adjust that goal by comparing it to the hard limit set by calculate_break_even_roas.
When It Fits, When It Doesn't
Use this MCP if you need a verifiable financial relationship between ad spending and profit. You should run all three tools—calculate_roas, get_target_benchmark, and calculate_break_even_roas—every time you adjust your budget significantly. The break-even calculation is the absolute, non-negotiable floor for your spending; if your current ROAS drops below this number, you're losing money. Don't use this MCP if you simply need to track historical ad metrics without considering profitability or industry context; in that case, a simple tracking tool will suffice.
Common Questions About ROAS Calculator MCP
How do I calculate total ROAS using the `calculate_roas` tool? +
You provide your overall media spend and the corresponding source revenue. The MCP calculates the return, and you can optionally ask it to break down that performance by specific ad channels.
What does `get_target_benchmark` tell me about my spending? +
It tells you what a typical business of your type should be achieving. This gives you an external yardstick, letting you know if your performance is competitive in the market.
If I change my product costs, do I need to update `calculate_break_even_roas`? +
Yes. You must always provide the updated contribution margin percentage. The required break-even ROAS changes immediately when your underlying cost structure shifts.
`calculate_roas` can it compare my spend between two platforms? +
It can, provided you supply the necessary media spend and revenue for each platform or channel. You'll get a detailed ROAS breakdown by the field you specify.
When running `calculate_roas`, how is my sensitive media spend data secured? +
The system handles your credentials via a zero-trust proxy, meaning your key never sits on disk. All financial inputs are used only in transit for the calculation and produce a cryptographically signed audit trail.
If I run `calculate_break_even_roas`, can it handle different currencies? +
Yes, you specify the target currency code when calling this MCP. The tool ensures that all calculations are performed and returned using the specified foreign exchange rate.
What happens if I input an invalid business type to `get_target_benchmark`? +
The MCP will return a specific error code, telling you exactly what format or value is needed. This prevents guesswork and ensures your agent only proceeds when the data structure is correct.
Is there a way to run multiple calculations using `calculate_roas` without excessive token use? +
Vinkius includes native token optimization for this MCP. This built-in feature cuts down on your overall token consumption, allowing you to perform complex comparisons and multi-step analyses efficiently.
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