VulnFeed — Dependency Vulnerability Monitoring for Claude Code

CI PyPI License: MIT vulnfeed-mcp MCP server

An MCP server that scans your project dependencies for known vulnerabilities, enriches with EPSS exploit probability scores, and recommends fix versions.

Free tier — 10 scans/day, 1 monitored project, no signup required.

Homepage: vulnfeed.novadyne.ai

Install

uvx vulnfeed-mcp

MCP client config

Add to your MCP client config (~/.claude/settings.json for Claude Code, claude_desktop_config.json for Claude Desktop):

Free tier (no signup, no API key):

{
  "mcpServers": {
    "vulnfeed": {
      "command": "uvx",
      "args": ["vulnfeed-mcp"]
    }
  }
}

Paid ($14/mo, unlimited scans + projects):

{
  "mcpServers": {
    "vulnfeed": {
      "command": "uvx",
      "args": ["vulnfeed-mcp"],
      "env": {
        "VULNFEED_API_KEY": "YOUR_LICENSE_KEY_HERE"
      }
    }
  }
}

Get a license key at vulnfeed.novadyne.ai.

x402 micropayments

VulnFeed also accepts x402 micropayments — AI agents can pay per scan with USDC on Base, no API key or signup needed. When the free tier limit is reached, the API returns HTTP 402 with payment requirements that x402-compatible clients handle automatically.

• $0.01 per scan
• $0.002 per CVE lookup
• $0.05 per project monitor setup

Tools

Scanning

Tool	Description
scan_project	Auto-detect and scan all lockfiles in a directory
scan_lockfile	Scan a specific lockfile
check_package	Check a single package for vulnerabilities
lookup_cve	Detailed CVE info with EPSS + fix versions

Monitoring

Tool	Description
monitor_project	Register for continuous monitoring
check_alerts	New vulns since last scan
update_deps	Update snapshot after upgrading packages
list_monitored	See all monitored projects
unmonitor_project	Remove from monitoring

Supported lockfiles

• package-lock.json (npm)
• yarn.lock (Yarn)
• pnpm-lock.yaml (pnpm)
• requirements.txt (pip)
• Pipfile.lock (Pipenv)
• go.sum / go.mod (Go)
• Cargo.lock (Rust)
• Gemfile.lock (Ruby)
• composer.lock (PHP)

How it works

1. Parses your lockfile to extract dependency names + versions
2. Queries OSV.dev (NVD + GitHub Advisories) for known CVEs
3. Enriches with EPSS exploit probability scores
4. Filters noise — suppresses low-EPSS, non-critical CVEs by default
5. Sorts by exploitability — most likely to be exploited first
6. Returns fix version recommendations from package registries

Smart filtering

By default, VulnFeed suppresses low-priority CVEs (EPSS < 10% AND CVSS < 9.0). This cuts noise by ~80%.

Pass show_all=True to any scan tool to see everything.

Continuous monitoring

1. monitor_project — takes a baseline snapshot of current deps + known vulns
2. check_alerts — diffs against baseline, surfaces only new vulns
3. Run check_alerts periodically to catch newly published CVEs

License

MIT