Native V8 Connector for AI agents.
1 live capability
Get mathematically precise regression metrics for your machine learning models.
Waiting for input…
Why people use Native V8
RMSE & MAE Calculator for Precise Machine Learning Validation
This Connector changes that by letting your agent handle the math directly. You just feed the arrays to your AI client, and it uses the calculation engine to give you the exact numbers. You get perfect MSE, RMSE, and MAE metrics without ever opening a spreadsheet.
What Vinkius changes
You get mathematically perfect validation metrics without the risk of AI hallucinations.
Use it from Claude, ChatGPT, Cursor or another AI client you already have.
One account · 5,900+ Connectors
- Real-world use case 01
Comparing Models
A developer has a Random Forest and a Neural Network and needs to know which one has less variance error.
- Real-world use case 02
Housing Price Prediction
A data scientist wants to see how far off their linear model's house price predictions are from reality.
- Real-world use case 03
Stock Value Analysis
A financial analyst checks the MAE of a stock forecast to see the average dollar amount of error.
Complete set · 1capability
The complete Native V8 capability set.
These are the exact actions your AI can choose when you ask it to work with Native V8.
01
1 capability in this set.
Part of 1 available through Native V8.
- 01 Capability
Calculate regression metrics
Calculates exact RMSE, MAE, and MSE for regression model validation. This gives you precise error stats for your datasets and ensures your math is always correct.
Set up in minutes
One URL. Then ask Native V8 to work.
Claude and ChatGPT only need the Connector URL. Copy it once, add it in settings, and use Native V8 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_7taOhFMQ4QeTOzapBajB7VxkIYnA7kpKNDVm5F0k/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 Native V8, and paste the URL above.
- Step 03
Turn it on in chat
Select +, open Connectors, and enable Native V8 for the conversation.
ChatGPT · Web + desktop
Connector URL · ready to paste
Streamable HTTPhttps://edge.vinkius.com/vk_preview_7taOhFMQ4QeTOzapBajB7VxkIYnA7kpKNDVm5F0k/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 Native V8 URL.
- Step 03
Save and start
Save the connection and enable Native V8 in your conversation. Desktop may ask you to restart once.
Cursor · IDE configuration
Advanced setup
{
"mcpServers": {
"rmse-mae-calculator": {
"url": "https://edge.vinkius.com/vk_preview_7taOhFMQ4QeTOzapBajB7VxkIYnA7kpKNDVm5F0k/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 Native V8
Open Agent mode in chat and ask: "Using Native V8, help me...". 1 tools available
VS Code Copilot · IDE configuration
Advanced setup
{
"mcpServers": {
"rmse-mae-calculator": {
"url": "https://edge.vinkius.com/vk_preview_7taOhFMQ4QeTOzapBajB7VxkIYnA7kpKNDVm5F0k/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 Native V8
Ask Copilot: "Using Native V8, help me...". 1 tools available
Windsurf · IDE configuration
Advanced setup
{
"mcpServers": {
"rmse-mae-calculator": {
"url": "https://edge.vinkius.com/vk_preview_7taOhFMQ4QeTOzapBajB7VxkIYnA7kpKNDVm5F0k/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 Native V8
Open Cascade and ask: "Using Native V8, help me...". 1 tools available
Cline · IDE configuration
Advanced setup
{
"mcpServers": {
"rmse-mae-calculator": {
"url": "https://edge.vinkius.com/vk_preview_7taOhFMQ4QeTOzapBajB7VxkIYnA7kpKNDVm5F0k/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 Native V8
Ask Cline: "Using Native V8, help me...". 1 tools available
Claude Code · Terminal command
Advanced setup
claude mcp add rmse-mae-calculator --transport http "https://edge.vinkius.com/vk_preview_7taOhFMQ4QeTOzapBajB7VxkIYnA7kpKNDVm5F0k/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 Native V8
Ask Claude: "Using Native V8, show me...". 1 tools are ready
Where the request belongs
Work Native V8 can move forward.
Data scientists who can't risk hallucinated metrics in a research paper or a production deployment. It's for the ML engineer who needs to prove their model actually works.
Data Scientist
Validates regression models for housing price predictions on a Tuesday afternoon.
ML Engineer
Compares different neural network outputs to select the best production model.
Research Analyst
Checks the accuracy of stock price forecasts against historical data.
Build the capability set
Add more capabilities.
Each Connector adds new actions and data without changing how you work.
Browse ConnectorsROC AUC Evaluator
Compute the exact Area Under the ROC Curve for binary classification predictions. Local, mathematically perfect, zero LLM estimation.
Confusion Matrix Engine
Deterministically calculate True Positives, FP, Precision, Recall, F1-Score, and Accuracy local. Stop LLM hallucinations when evaluating model metrics.
Curve Fitting Engine
Perform exact Linear and Polynomial regression on scatter plot data local. Get mathematically perfect coefficients, equations, and R-squared scores.
Outlier Detection Engine
Identify statistical anomalies in massive datasets local using deterministic Z-Score and IQR methods. Stop LLMs from guessing which rows are outliers.
Arize AI
Monitor ML model performance, detect data drift, and troubleshoot prediction quality with real-time observability dashboards.
K-Fold Split Engine
Generate rigorous, leak-proof cross-validation indices for train and test splits in machine learning pipelines.
Bring your own AI
Change the model, client or framework. Keep Native V8 connected.
-
Claude -
ChatGPT -
Gemini -
Cursor -
VS Code -
Windsurf -
ZCode -
Cline -
Zed -
Continue -
Kiro -
Roo Code -
Zencoder -
Goose -
Void -
Augment Code -
Amp -
Qodo -
Tabnine -
Pieces -
Sourcegraph Cody -
JetBrains -
Warp -
Amazon Q -
Antigravity -
BoltAI -
Raycast -
Jan -
LM Studio -
AnythingLLM -
Open WebUI -
Msty -
Cherry Studio -
LibreChat -
TypingMind -
Chorus -
5ire -
n8n -
LangChain -
LlamaIndex -
CrewAI -
Vercel AI SDK
Before you connect
Questions about Native V8.
The practical details behind the request, access and result.
What is the RMSE & MAE Calculator used for?
It is used for getting exact error scores for regression models, such as predicting house prices or stock values.
Can the RMSE & MAE Calculator handle large datasets?
Yes, it processes numeric arrays natively in JavaScript to give you precise metrics quickly without slowing down your workflow.
Will the RMSE & MAE Calculator help me find outliers?
Yes, by comparing the MAE and RMSE, you can see if your model is being skewed by extreme values in your data.
Is the RMSE & MAE Calculator accurate?
It provides mathematically pristine results because it uses a dedicated calculation engine rather than relying on the AI's internal logic.
Can I use the RMSE & MAE Calculator for stock predictions?
Definitely. It is a standard way to validate how well your agent is forecasting price movements against historical data.
How does the RMSE & MAE Calculator work with my AI?
You just give your agent the lists of numbers, and it uses the Connector to do the math for you instantly.
What is the difference between RMSE and MAE?
RMSE heavily penalizes large errors (because the errors are squared before averaging), while MAE treats all errors equally linearly.
Can it handle negative predictions?
Yes, the exact mathematical formulas handle all floating-point numbers including negatives.
Is this done local?
Yes. All validation metrics are computed locally on the Vinkius Edge Runtime with zero external API calls, ensuring high privacy.
One connection away
Give your agent a direct line to Native V8.
Connect Native V8 once. Keep it beside 5,900+ managed Connectors when the next task needs more.
Explore every Connector No credit card required · Free tier available