Retention Analytics MCP for AI. Pinpoint exactly where and why your users are leaving.
Works with every AI agent you already use
…and any MCP-compatible client








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Cohort Retention Analytics MCP processes user data to map out retention curves and calculate average user lifetime. This tool determines exactly when your users start churning, helping you benchmark performance against industry standards for SaaS, E-Commerce, or Gaming models.
What your AI can do
Calculate average lifetime
Predicts the total number of months a user is expected to remain active in your service.
Compare performance to benchmark
Checks if a specific metric you provide performs well against known industry standards for your product category.
Evaluate retention milestone
Retrieves the exact retention percentage for any user cohort at a specified point in time.
Generates a sequence of data points that show how quickly a group of users loses activity over months.
Calculates the expected number of months an average user will remain active and engaged with your product.
Determines if a specific retention rate (like 3-month or 6-month) meets industry expectations for your category.
Compares any metric you provide against hardcoded standards for various industries, flagging gaps immediately.
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Cohort Retention Analytics: 4 Tools
These tools let you analyze how users stick around by calculating decay rates, average lifetime, and comparing metrics to sector benchmarks.
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Add this MCP to Claude, Cursor, or Windsurf and your AI stops guessing. It gets real tools to look things up, take action, and handle the stuff you keep doing by hand.
Start using Cohort Retention Analytics on VinkiusCalculate Average Lifetime
Predicts the total number of months a user is expected to remain active in your service.
Compare Performance To Benchmark
Checks if a specific metric you provide performs well against known industry...
Evaluate Retention Milestone
Retrieves the exact retention percentage for any user cohort at a specified point in...
Calculate Retention Curve
Generates a data sequence that maps out how rapidly your users lose activity over...
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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 connection provides 4 powerful capabilities that interface natively with Claude, ChatGPT, Cursor, and other compatible AI platforms. No middleware. No custom integration required.
The Retention Report Grind
Today, generating a single retention insight means jumping between your BI dashboard, the data warehouse query tool, and a spreadsheet. You pull raw cohort arrays, manually calculate decay rates for key milestones, and then spend hours trying to find an external chart that tells you if that 25% figure is 'actually good.' It's tedious, error-prone clicking through tabs just to answer one question.
With this MCP, your agent handles the entire calculation. You provide the raw data, and it automatically generates the decay curve points while simultaneously comparing those numbers against known industry standards. You get a clear verdict on product health without opening another spreadsheet.
Pinpoint User Decay Rates with calculate_retention_curve
You no longer need to manually plot the decay curve over time. The agent processes your data stream and outputs a sequence of clean, usable points that show exactly when user activity drops off across every month.
This means you can finally stop guessing about churn timing. You know precisely which months require immediate product attention.
What your AI can actually do with this
Understanding why users leave is key to product health. This connector takes raw cohort data and turns it into specific actions. Instead of guessing where the biggest leaks are, your agent generates clear retention curves showing how a group of users decays over time. You'll know exactly if you're meeting industry standards—whether you run an e-commerce site or B2B SaaS.
It also calculates the expected average lifetime value for any user cohort. When you connect this MCP via Vinkius, your agent can compare your current metrics against predefined benchmarks for multiple industries, giving immediate feedback on where to focus product efforts.
019eeae3-bd3b-7104-993e-d0a32c015bba Here's how it actually works
The bottom line is that your agent takes complex retention numbers and outputs simple answers about where you need to focus.
You feed the MCP raw cohort data or a specific retention rate to your agent.
The service processes this data, running calculations to generate curves and compare metrics against industry standards.
Your agent receives actionable insights, such as a decay curve visualization or a 'performance status' (e.g., At Risk) compared to the benchmark.
Who is this actually for?
This MCP helps Product Managers, Data Analysts, and Growth Directors who wake up needing to know why their user base isn't sticking around. If your job involves optimizing product stickiness, this is for you.
Determining which features are critical for retention and pinpointing the exact moment in the user journey where most users drop off.
Calculating Lifetime Value (LTV) projections and comparing raw, messy metrics against established industry best practices.
Identifying immediate areas of weakness by checking retention milestones against sector benchmarks to prioritize marketing or product fixes.
What Changes When You Connect
Stop guessing about churn. Use calculate_retention_curve to generate a data map that shows the exact monthly decay rate, letting you pinpoint retention leaks.
Instantly gauge performance against peers. The compare_performance_to_benchmark tool checks your current metrics (e.g., 3-month retention) against industry standards like SaaS or E-commerce.
Forecast future value with confidence. Calculating the average user lifetime tells you how long your investment in a new user is actually worth.
Target specific product fixes. The evaluate_retention_milestone tool lets you check if users are surviving key periods, like 60 or 120 days post-signup.
Focus efforts where they count. By combining the decay curve with benchmark checks, you move beyond simple reporting to actionable resource allocation.
See it in action
The 'Early Drop-Off' Problem
A PM notices a high sign-up rate but low 30-day activity. They ask their agent to run evaluate_retention_milestone for the 1-month mark, identifying that users drop off sharply after onboarding, leading them to prioritize better first-week feature guidance.
The 'Is This Good?' Question
A Growth Lead gets a 20% retention rate and wonders if it's acceptable. They use compare_performance_to_benchmark to confirm their industry standard is 30%, immediately showing they have a clear gap to fix.
The 'How Long Will They Stay?' Question
A Product Owner needs to justify long-term feature investment. They ask the agent to calculate the average user lifetime, giving them a 2.5-year projection that validates the roadmap's financial viability.
The 'What If?' Scenario
A Data Analyst wants to model the effect of losing specific features. They use calculate_retention_curve with hypothetical decay rates, visualizing how quickly their user base would shrink without a core product pillar.
The honest tradeoffs
Looking only at MRR/ARR
A team sees Monthly Recurring Revenue (MRR) is up 15% and assumes everything is fine. They miss that the user base paying for that revenue is decaying rapidly, meaning future growth is unsustainable.
Don't stop there. Use calculate_retention_curve first to see the decay pattern. Then use compare_performance_to_benchmark to validate if your current retention rate can support sustained MRR growth.
Treating all users equally
Assuming that a user who signs up via marketing performs the same as one who signed up through an enterprise demo. This hides crucial differences in long-term value.
Run multiple checks. Use evaluate_retention_milestone separately for different acquisition channels, then use calculate_average_lifetime on those specific segments to find high-value cohorts.
Ignoring market context
A company achieves a decent retention rate but fails to know if that rate is actually considered good in their industry. They settle for 'good enough' when they should be aiming higher.
Always run compare_performance_to_benchmark as the final check. It forces you to measure your success against real-world standards, not just historical internal data.
When It Fits, When It Doesn't
Use this MCP if your primary question is 'Why are users leaving?' If you're simply generating standard reports (e.g., 'How many users signed up last month?'), don't use it; basic analytics tools handle that fine. You need this when the data feels flat or incomplete—when you suspect a fundamental issue with user stickiness. The combination of calculate_retention_curve and compare_performance_to_benchmark is required because knowing your decay rate means nothing until you know what 'good' looks like in your sector.
Don't use it if all you want is to see yesterday's numbers; this MCP predicts the future. Use a simple reporting tool for that. You need this when you must justify product changes or resource allocations based on predictive user behavior.
Questions you might have
How does calculate_average_lifetime work with Vinkius? +
It predicts the total expected active time for a user cohort by analyzing your retention rates. By connecting through Vinkius, you'll have access to this analysis alongside hundreds of other data services.
What kind of metrics does compare_performance_to_benchmark use? +
It compares specific figures—like 3-month retention or average LTV—against hardcoded industry standards for categories like SaaS, E-Commerce, and Gaming.
Can I check a specific month using evaluate_retention_milestone? +
Yes. You can input any desired time point (the milestone) to see the exact retention percentage for your cohort at that moment without needing to calculate it manually.
Is calculate_retention_curve better than just viewing raw data? +
The curve is much better. It smooths out random noise and shows a clear, predictable decay pattern over time, making the drop-off points obvious to diagnose.
What input data structure does `calculate_retention_curve` require? +
It requires a sequence of raw percentage inputs, representing decay over time. You must provide these as an ordered array or list; simply describing the rates is not enough for calculation.
What happens if I run `calculate_average_lifetime` with insufficient data points? +
The tool will return a specific error message indicating that it needs more time periods to calculate an accurate average. Providing just two or three months of activity won't give you a reliable estimate.
Can `compare_performance_to_benchmark` adjust for different product verticals? +
No. The tool uses hardcoded industry standards linked to specific categories like SaaS and E-Commerce. If your niche falls outside those predefined sectors, you'll have to manually adjust the benchmark percentage.
When using `evaluate_retention_milestone`, how precise is the time frame? Can I check for quarterly milestones? +
It checks retention against a specific point in time, which means it works best with month-over-month data. While you can request broader periods, the calculation relies on accurate monthly inputs.
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