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Compare MCP servers

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

DimensionMCP ObservatoryCI-native security testing for MCP servers: attack simulation, schema drift detection, and health scoring.NPM Sentinel MCP ServerAI-powered NPM package analysis MCP server
FMRS51 / 100 · D79 / 100 · B
Reliability6 / 2012 / 20
Security and permissions8 / 2016 / 20
Maintenance10 / 2018 / 20
Documentation14 / 2018 / 20
Setup experience13 / 2015 / 20
Best for
  • Development teams building custom MCP servers.
  • Security teams needing to validate MCP server security in the AI supply chain.
  • DevOps engineers looking for CI integration for MCP server testing.
  • Developers auditing NPM dependencies within AI workflows
  • Teams performing supply chain security assessments
  • Users of Claude Desktop, Cursor, or VS Code
Not for
  • Servers requiring interactive OAuth (like Google Drive) that need pre-authentication.
  • Servers using custom WebSocket transports (e.g., BrowserTools MCP) are not supported.
  • Performance benchmarking of MCP servers (use MCPBench).
  • 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
  • Requires access to the local filesystem to read configs and write reports.
  • Can spawn subprocesses to launch MCP servers.
  • Can post GitHub comments and set commit statuses (when configured).
  • Can upload SARIF results to GitHub Code Scanning (when configured).
  • 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
  • May execute unsafe tool calls, but has an allowlist for base commands by default.
  • Requires network access to install npm packages and reach remote servers.
  • Generated reports may contain sensitive information; handle them carefully.
  • 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 DesktopClaude Desktop, VS Code, Cursor
Tools1019