MCP Server For OSV

A lightweight MCP (Model Context Protocol) server for OSV Database API.

Example:

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Tools Provided

Overview

name	description
query_package_cve	List all the CVE IDs for a specific package. Specific version can be passed as well for more narrow scope CVE IDs.
query_for_cve_affected	Query the OSV database for a CVE and return all affected versions of the package.
query_for_cve_fix_versions	Query the OSV database for a CVE and return all versions that fix the vulnerability.
get_ecosystems	Query the MCP for current supported ecosystems.

Detailed Description

• query_package_cve

  • Query the OSV database for a package and return the CVE IDs.
  • Input parameters:
    • package (string, required): The package name to query
    • version (string, optional): The version of the package to query. If not specified, queries all versions
    • ecosystem (string, optional): The ecosystem of the package. Defaults to "PyPI" for Python packages
  • Returns a list of CVE IDs with their details

• query_for_cve_affected

  • Query the OSV database for a CVE and return all affected versions.
  • Input parameters:
    • cve (string, required): The CVE ID to query (e.g., "CVE-2018-1000805")
  • Returns a list of affected version strings

• query_for_cve_fix_versions

  • Query the OSV database for a CVE and return all versions that fix the vulnerability.
  • Input parameters:
    • cve (string, required): The CVE ID to query (e.g., "CVE-2018-1000805")
  • Returns a list of fixed version strings

• get_ecosystems

  • Query for all current supported ecosystems by the MCP servers.
  • Return a dict with the key being the ecosystem name and the value the programming language / OS.

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Prerequisites

1. Python 3.11 or higher: This project requires Python 3.11 or newer.

   # Check your Python version
   python --version

2. Install uv: A fast Python package installer and resolver.

   pip install uv

   Or use Homebrew:

   brew install uv

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Tested on

• Cursor
• Claude

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Installation

1. Via Smithery:

npx -y @smithery/cli install @EdenYavin/OSV-MCP --client claude

1. Locally:

   1. Clone the repo: https://github.com/EdenYavin/OSV-MCP.git
   2. Configure your MCP Host (Cusrsor / Claude Desktop etc.):

{
  "mcpServers": {
    "osv-mcp": {
      "command": "uv",
      "args": ["--directory", "path-to/OSV-MCP", "run", "osv-server"],
      "env": {}
    }
  }
}

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