CVSS Calculator & MCP Server

Calculate CVSS scores in your browser or connect an AI agent to the MCP server.

Choose a calculator

Select the CVSS version you need.

Base, Threat, Environmental, and Supplemental metrics.

Base, Temporal, and Environmental metrics.

Base, Temporal, and Environmental metrics.

Base, Temporal, and Environmental metrics.

Connect an AI agent to calculate CVSS Base Scores using the calculate_cvss tool.

stdio Linux / macOS

Run the server on your machine. The public endpoint rate limit does not apply.

curl -fsSL https://get.cvss.my.id/install.sh | bash

Streamable HTTP

Connect with Streamable HTTP. No local installation or API key required.

https://cvss.my.id/mcp

Published usage policy: Rate limit: 5 requests per minute per IP. For higher usage, run Local MCP (stdio).

Not checked

Checks from your connection and counts as a request.

Learn about CVSS, the calculator, and MCP setup.

CVSS Reference Guides

Learn about CVSS metrics and scores.
Vector String Syntax & Ordering Rules

Learn how to read and write CVSS vectors.
MCP Client Setup Guides

Connect an MCP client to the server.
Using the Browser Calculator

Learn how to select metrics, edit vectors, and copy results.

Explore the code on GitHub.

The website, documentation, and browser calculator.

An MCP server for CVSS Base Scores.