Magic Number Calculator Connector for AI agents.
3 live capabilities
Measure SaaS growth efficiency and revenue ROI in real time.
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Why people use Magic Number Calculator
Magic Number Calculator for SaaS GTM Efficiency
This Connector cuts out the middleman. You just provide the numbers, and the Magic Number Calculator gives you the ratio and a health rating instantly. You get a clear picture of your growth engine without the copy-pasting headache.
What Vinkius changes
You get an instant, accurate health check on your SaaS growth efficiency.
Use it from Claude, ChatGPT, Cursor or another AI client you already have.
One account · 5,900+ Connectors
- Real-world use case 01
Investor Reporting
A founder needs to show a VC that their growth is efficient.
- Real-world use case 02
Budget Planning
A marketing lead wants to know if they can afford to spend more.
- Real-world use case 03
Quarterly Reviews
A finance lead wants a quick pulse check.
Complete set · 3capabilities
The complete Magic Number Calculator capability set.
These are the exact actions your AI can choose when you ask it to work with Magic Number Calculator.
01—03
3 capabilities in this set.
Part of 3 available through Magic Number Calculator.
- 01 Capability
Calculate magic number
Get the raw Magic Number ratio based on your revenue and spending data. This helps you see the direct relationship between spend and new ARR.
- 02 Capability
Evaluate gtm health summary
Get a full diagnostic summary of your overall Go-To-Market engine health. This provides a high-level look at your scaling efficiency.
- 03 Capability
Get efficiency rating
See which performance tier your growth falls into, like Inefficient or Excellent. This gives you a clear label for your current trajectory.
Set up in minutes
One URL. Then ask Magic Number Calculator to work.
Claude and ChatGPT only need the Connector URL. Copy it once, add it in settings, and use Magic Number Calculator from the conversation.
Choose your client
Live previewAdvanced clients IDE · CLI
Claude · Web + desktop
Connector URL · ready to paste
Streamable HTTPhttps://edge.vinkius.com/vk_preview_TQeAOYChQ2JRBFEdaNVzEAjtz55h5Ww9wydTcKWF/mcp - Step 01
Open Connectors
In Claude Web or Claude Desktop, open Settings and choose Connectors.
- Step 02
Add the URL
Choose Add custom connector, name it Magic Number Calculator, and paste the URL above.
- Step 03
Turn it on in chat
Select +, open Connectors, and enable Magic Number Calculator for the conversation.
ChatGPT · Web + desktop
Connector URL · ready to paste
Streamable HTTPhttps://edge.vinkius.com/vk_preview_TQeAOYChQ2JRBFEdaNVzEAjtz55h5Ww9wydTcKWF/mcp - Step 01
Open MCP settings
On desktop, open Settings and MCP servers. On web, open your workspace app or connector settings.
- Step 02
Add the URL
Choose Add server with Streamable HTTP, or create a custom MCP app, then paste the Magic Number Calculator URL.
- Step 03
Save and start
Save the connection and enable Magic Number Calculator in your conversation. Desktop may ask you to restart once.
Cursor · IDE configuration
Advanced setup
{
"mcpServers": {
"magic-number-calculator": {
"url": "https://edge.vinkius.com/vk_preview_TQeAOYChQ2JRBFEdaNVzEAjtz55h5Ww9wydTcKWF/mcp"
}
}
}- Step 01
Open MCP Settings
Press Cmd+Shift+P (macOS) or Ctrl+Shift+P (Windows/Linux) → search "MCP Settings"
- Step 02
Add the server config
Paste the JSON configuration above into the mcp.json file that opens
- Step 03
Save the file
Cursor will automatically detect the new Connector
- Step 04
Start using Magic Number Calculator
Open Agent mode in chat and ask: "Using Magic Number Calculator, help me...". 3 tools available
VS Code Copilot · IDE configuration
Advanced setup
{
"mcpServers": {
"magic-number-calculator": {
"url": "https://edge.vinkius.com/vk_preview_TQeAOYChQ2JRBFEdaNVzEAjtz55h5Ww9wydTcKWF/mcp"
}
}
}- Step 01
Create MCP config
Create a .vscode/mcp.json file in your project root
- Step 02
Add the server config
Paste the JSON configuration above
- Step 03
Enable Agent mode
Open GitHub Copilot Chat and switch to Agent mode using the dropdown
- Step 04
Start using Magic Number Calculator
Ask Copilot: "Using Magic Number Calculator, help me...". 3 tools available
Windsurf · IDE configuration
Advanced setup
{
"mcpServers": {
"magic-number-calculator": {
"url": "https://edge.vinkius.com/vk_preview_TQeAOYChQ2JRBFEdaNVzEAjtz55h5Ww9wydTcKWF/mcp"
}
}
}- Step 01
Open MCP Settings
Go to Settings → MCP Configuration or press Cmd+Shift+P and search "MCP"
- Step 02
Add the server
Paste the JSON configuration above into mcp_config.json
- Step 03
Save and reload
Windsurf will detect the new server automatically
- Step 04
Start using Magic Number Calculator
Open Cascade and ask: "Using Magic Number Calculator, help me...". 3 tools available
Cline · IDE configuration
Advanced setup
{
"mcpServers": {
"magic-number-calculator": {
"url": "https://edge.vinkius.com/vk_preview_TQeAOYChQ2JRBFEdaNVzEAjtz55h5Ww9wydTcKWF/mcp"
}
}
}- Step 01
Open Cline MCP Settings
Click the Connectors icon in the Cline sidebar panel
- Step 02
Add remote server
Click "Add Connector" and paste the configuration above
- Step 03
Enable the server
Toggle the server switch to ON
- Step 04
Start using Magic Number Calculator
Ask Cline: "Using Magic Number Calculator, help me...". 3 tools available
Claude Code · Terminal command
Advanced setup
claude mcp add magic-number-calculator --transport http "https://edge.vinkius.com/vk_preview_TQeAOYChQ2JRBFEdaNVzEAjtz55h5Ww9wydTcKWF/mcp"- Step 01
Install Claude Code
Run npm install -g @anthropic-ai/claude-code if not already installed
- Step 02
Add the Connector
Run the command above in your terminal
- Step 03
Verify the connection
Run claude mcp to list connected servers, or type /mcp inside a session
- Step 04
Start using Magic Number Calculator
Ask Claude: "Using Magic Number Calculator, show me...". 3 tools are ready
Where the request belongs
Work Magic Number Calculator can move forward.
This is for SaaS founders and growth leads who need to justify their marketing spend to investors or leadership. It is for the person tired of manual spreadsheets and who needs a clear signal on whether their growth is healthy or just expensive.
Growth Marketing Manager
They use this to prove that their campaigns are actually driving efficient revenue.
SaaS Founder
They use this to check if they're burning too much cash to acquire new customers.
Finance Analyst
They use this to benchmark the company's unit economics against industry standards.
VC Associate
They use this to quickly vet the efficiency of a portfolio company's growth engine.
Build the capability set
Add more capabilities.
Each Connector adds new actions and data without changing how you work.
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Calculate marketing Return on Investment (ROI), payback period, and efficiency across all campaigns using detailed cost and revenue attribution.
Revenue Quality Scorer
Analyze revenue stability, concentration risk, and market diversification.
Gross Profit Efficiency Calculator
Analyze SaaS unit economics, COGS breakdown, and simulate margin improvement levers.
Unit Economics Calculator
Determine if your customer acquisition strategy is profitable by calculating LTV, CAC, and the critical LTV:CAC ratio using three interconnected financial models.
Bring your own AI
Change the model, client or framework. Keep Magic Number Calculator connected.
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Claude -
ChatGPT -
Gemini -
Cursor -
VS Code -
Windsurf -
ZCode -
Cline -
Zed -
Continue -
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Vercel AI SDK
Before you connect
Questions about Magic Number Calculator.
The practical details behind the request, access and result.
What is the Magic Number in SaaS?
The Magic Number is a ratio that compares your Net New ARR to your Sales and Marketing spend. It tells you how many dollars of new revenue you generate for every dollar you spend on growth.
How does the Magic Number Calculator help my growth?
It gives you a clear signal on whether your growth engine is healthy or inefficient. By tracking this number over time, you can see if your marketing efforts are becoming more effective as you scale.
Can I use this to see if my marketing spend is too high?
Yes, the Magic Number Calculator identifies if your spend is yielding the expected revenue. It categorizes your performance into tiers like Inefficient or Excellent to help you spot issues quickly.
What does an Excellent rating mean for my business?
An Excellent rating means your growth engine is highly efficient. It suggests that you are successfully converting your S&M spend into high-quality revenue at a rate that supports healthy scaling.
How do I get a health summary for my GTM engine?
You can simply ask your AI agent to evaluate your GTM health by providing your recent revenue and spend figures. The Connector will then generate a diagnostic summary of your scaling efficiency.
Is the Magic Number Calculator good for VC reporting?
It is a great capability for VC reporting because it provides a standardized metric for growth efficiency. It helps you prove to investors that your growth is sustainable and capital-efficient.
What is the Magic Number?
The Magic Number is a SaaS metric that measures the efficiency of your Sales and Marketing spending relative to the revenue growth it generates.
How do I interpret the results?
A ratio below 0.5 is considered inefficient, a ratio of 0.75 or higher is healthy, and a ratio of 1.0 or greater is excellent.
What inputs are required for the calculation?
You need to provide your Net New ARR from the current quarter and your Sales and Marketing spend from the previous quarter.
One connection away
Give your agent a direct line to Magic Number Calculator.
Connect Magic Number Calculator once. Keep it beside 5,900+ managed Connectors when the next task needs more.
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