
Connect T Test Statistics Engine to ChatGPT and Claude
Set it up once and it works in ChatGPT, Claude, Cursor, and any other client you love. It all runs safely in the background, so you can relax and focus on what really matters. Get mathematically guaranteed p-values instead of AI guesses.
Developed, maintained, and hosted by Vinkius.
MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED
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Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.
Your AI does the work. We keep it safe and sound.
No other AI tool gives you this. Your workflow runs in the client you already love, your account stays protected, and you decide what the agent can and cannot do. It is the whole reason to make the switch.
Each Connector lives inside our infrastructure, the same place where your workflow runs. The three things below are already part of it, working quietly in the background so you never have to think about them. Nothing to add, nothing to set up, nothing to worry about.

Each Connector runs inside its own sealed environment.
Each Connector runs inside its own sealed V8 runtime — no access to your files, your system, or other servers. A Connector never sees past its own request.
One switch stops every agent. Instantly.
One action deactivates every Connector, revokes every token, and ends every session at once. AI Governance keeps the record.
Spending limits that pause instead of surprise.
Every user keeps their own connections and credentials, isolated from everyone else. Anything that would cross your spending limit is held for your approval, not billed.
Three controls, built into the layer your AI connects through.
Curated set · 1 capability
We ship only the actions that matter.
01
1 capability in this set.
Part of 1 available through jstat.
- 01
Calculate t test
This capability performs exact deterministic Student's t-tests, including independent, paired, and one-sample variations. It ensures your statistical significance results are mathematically sound and free from LLM hallucinations.
Real work
What teams actually run
A/B Testing
Compare conversion rates between two website variants to see if a change is statistically significant.
Clinical Trials
Analyze pre-treatment and post-treatment readings to measure the effect of a medical intervention.
Manufacturing Quality Control
Verify if a batch of products meets a specific weight or dimension target using one-sample tests.
Scientific Research
Run hypothesis tests on experimental data to confirm or reject research assumptions.
Automate a task
Put jstat to work on one thing.
Step-by-step automations your AI runs through this Connector: the workflow, the prompts to start with, and the exact capabilities behind each move.
One connector, every AI
jstat works with the most popular AI clients.
These are the most popular clients, each with a step-by-step guide: one link, set up once, with governance and visibility built in. And because everything runs on the MCP standard, the same connection also works in any other compatible client — nothing to rebuild.
Claude
ChatGPT
Gemini
Perplexity
Grok
Microsoft Copilot
Cursor
VS Code
Windsurf
JetBrains
Cline
LangChain
Vercel AI SDK
Lovable
Z.ai
Raycast
Qwen Code
Kimi Code
Le ChatBuilding your own app? The connector is yours to use.
You don't need a client to put jstat to work: the same hosted connection plugs into your own applications and agent code, with the same governance on every request. Build with it, chat with it — one connection for both.
Observed, not estimated
910ms average. Fast in production.
jstat is checked daily against the live service.
- Fastest day
- 630ms
- Slowest day
- 1137ms
- 14-day trend
- Slowing+20%
Connect your client
One URL. Every client.
Activate the Connector, copy your link, and paste it into the client you already use. 1 capability arrives ready to run.
Preview access · not provider authentication
The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of jstat, so you can see the experience inside your AI.
It does not authenticate your account with jstat. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.
jstat Connector
You're all set. Choose your MCP client and follow the setup instructions.
https://edge.vinkius.com/vk_preview_EmtZwk2XpPdUyFvH15enT6zX1o0mdbBKs430ALWM/mcpClaude Desktop
Follow the steps below to connect in seconds.
- 1In Claude Desktop, open Settings → Connectors.
- 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
- 3Click Add and start a new chat — jstat capabilities are ready to use.
{
"mcpServers": {
"t-test-statistics-engine-mcp": {
"url": "https://edge.vinkius.com/vk_preview_EmtZwk2XpPdUyFvH15enT6zX1o0mdbBKs430ALWM/mcp"
}
}
}
Claude
ChatGPT
Cursor
VS Code
Windsurf
Claude Code
JetBrains
Cline
Step-by-step instructions for each client are in the guide. How to connect
Guided setup for Claude? Set up jstat in Claude and other AIs
Who it's for
Built for the work jstat owners hand off.
This MCP is built for professionals who need to bridge the gap between natural language reasoning and rigorous mathematical accuracy.
- 01
Data Scientists
They hand off raw datasets to the AI to get verified statistical significance.
- 02
Researchers
They use it to validate experimental results against specific null hypotheses.
- 03
Quality Control Engineers
They check if production batches meet specific weight or measurement targets.
FAQ
Questions jstat owners ask.
- 01
How does this MCP prevent AI hallucinations?
It moves the math away from the language model. Instead of the AI guessing a number, it sends the data to a local engine that performs deterministic calculations.
- 02
What kind of t-tests can I run?
You can run independent, paired, and one-sample t-tests.
- 03
Is my data safe?
Yes, the computation is handled by a local engine, which helps keep your experimental data private.
- 04
Which AI clients can use this?
You can use this with any MCP-compatible client, including Claude, Cursor, Windsurf, and VS Code.
- 05
Does it provide the p-value?
Yes, it returns the exact p-value, t-score, and degrees of freedom.
- 06
Why shouldn't I just ask the AI to calculate the p-value directly?
Because Large Language Models generate text based on probability, not logic. They frequently hallucinate complex floating-point math. This engine forces the AI to use a real local calculator, producing exact results every single time.
- 07
Does it assume equal variances?
For independent tests, it currently uses the standard Student's t-test which assumes equal variance. Paired and one-sample tests calculate their specific formulas independently.
- 08
What alpha level is used for significance interpretation?
The engine automatically interprets significance using the standard alpha = 0.05 (95% confidence level). The exact p-value is always returned so you can apply any custom threshold.
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Connect jstat to Claude, Cursor, ChatGPT & more
