Osv Mcp

io.github.mrfentmenPublished by GitHub account mrfentmenv1.0.0Updated Oct 24, 2026

Use this MCP server to OSV open source vulnerability data and package security checks. Tools...

VerifiedSTDIODesktop onlyDeveloper ToolsSecurity & Monitoring

Overview

AI-generated overview

Local MCP server that lets a coding assistant check open source packages against OSV.dev vulnerability data and look up CVE, GHSA or OSV records.

What you can do
  • Check a single package by ecosystem, name and optional version
  • Scan a list of package references in one request, with lockfiles parsed in the client
  • Retrieve a specific CVE, GHSA or OSV vulnerability record
When to use it
Useful when an assistant reviews dependencies, audits a lockfile, or needs to confirm whether a package version has known vulnerabilities before suggesting or upgrading it.
Requirements
Runs as a local stdio process installed from the npm package osv-mcp (build with npm install and npm run build, then run the built entry point). Needs network access to the public OSV.dev API; no API key or account is required.
Before you install
Read only, with no credentials requested. Package names and versions queried are sent to the public OSV.dev API, so dependency lists leave the machine. Results reflect OSV.dev data and may be incomplete or outdated.

Installation

In SourceWeft

  1. Open Osv Mcp in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Desktop only via STDIO. STDIO servers start a local process, so they need the SourceWeft desktop host.

Other MCP clients

Follow the launch instructions in the repository.

README

OSV MCP

Open source vulnerability checks for coding agents. It uses the public OSV.dev API and needs no API key.

Tools

  • check_package checks an ecosystem, package name, and optional version
  • scan_packages checks several package references in one request; parse lockfiles in your client and pass the package list
  • get_vulnerability retrieves a CVE, GHSA, or OSV record

Run

bash
npm installnpm run buildnode dist/index.js

The server is read only and uses stdio MCP transport.

Source: README.md at commit f9eaa76

Tools

0
SourceWeft has not started this package in its sandbox yet, so its tools are not known.

Version history

1
  1. v1.0.0LatestSep 22, 2026

Score

40% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 days25 pts

    Keep the endpoint answering the MCP handshake; SourceWeft probes it every 30 days.

  • Auth declared10 pts

    Declare the credential headers in the registry entry, or keep the endpoint answering the probe so its auth can be classified.

  • Tools listed15 pts

    Answer tools/list without a credential, or ship a package that starts in a sandbox without one.

  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts

    Declare a license in the repository or the registry entry.