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Compare scores, permissions, risks, and fit in one decision-focused table.

DimensionBlackVeil DNS & Email Security ScannerDNS & email security scanner with 80 MCP tools, zero installNPM Sentinel MCP ServerAI-powered NPM package analysis MCP server
FMRS45 / 100 · D79 / 100 · B
Reliability8 / 2012 / 20
Security and permissions10 / 2016 / 20
Maintenance8 / 2018 / 20
Documentation9 / 2018 / 20
Setup experience10 / 2015 / 20
Best for
  • Security auditors
  • DevOps engineers
  • Site owners needing DNS/email security assessments
  • Compliance teams
  • Developers auditing NPM dependencies within AI workflows
  • Teams performing supply chain security assessments
  • Users of Claude Desktop, Cursor, or VS Code
Not for
  • Unauthorized domain reconnaissance
  • Users needing non-DNS features
  • Scenarios requiring local deployment without Cloudflare support
  • Projects outside the NPM ecosystem (e.g., pure Python/Go)
  • Environments without network access to deps.dev, OSV.dev, and the npm registry
  • Scenarios requiring maintenance by an official upstream vendor
Required permissions
  • Queries public DNS via Cloudflare DoH
  • Accesses CT logs and RDAP data
  • Some tools require a paid API key
  • No authorization required from the target domain
  • Network access to the NPM registry and external services (deps.dev, OSV.dev, OpenSSF, npms.io, GitHub)
  • Read access to workspace lockfiles (pnpm-lock.yaml, package-lock., yarn.lock) for cache invalidation
Risks and side effects
  • Scan results may reveal sensitive information and should only be used for authorized testing
  • Misuse for unauthorized reconnaissance may violate laws
  • Free tier has limited quota; advanced features require payment
  • Data handling is subject to BlackVeil's privacy policy
  • Third-party READMEs and changelogs are untrusted external content; they are wrapped in tags with _meta flags but should still be handled cautiously
  • Depends on availability and accuracy of external services
  • Batch requests are capped at 25 packages to prevent registry enumeration; larger sets require batching
  • Third-party open source project, not officially maintained by NPM or Anthropic
Supported clientsClaude Desktop, Claude Code, Cursor, VS CodeClaude Desktop, VS Code, Cursor
Tools1419