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Compare MCP servers

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

DimensionVibe Check MCPKISS overzealous agents goodbye: plug & play agent oversight tool.NPM Sentinel MCP ServerAI-powered NPM package analysis MCP server
FMRS63 / 100 · C79 / 100 · B
Reliability10 / 2012 / 20
Security and permissions12 / 2016 / 20
Maintenance13 / 2018 / 20
Documentation14 / 2018 / 20
Setup experience14 / 2015 / 20
Best for
  • Developers and teams building AI agents that need extra oversight to prevent reasoning lock-in and over-engineering.
  • Users working with MCP clients like Claude Desktop, Cursor, Windsurf, or VS Code who want long-horizon workflows to stay on track.
  • Developers seeking research-backed reliability improvements for agents.
  • Developers auditing NPM dependencies within AI workflows
  • Teams performing supply chain security assessments
  • Users of Claude Desktop, Cursor, or VS Code
Not for
  • Simple or fast tasks where an external oversight call adds unwanted latency and cost.
  • Scenarios where you cannot or do not want to rely on external LLM API calls (requires at least one provider key).
  • Projects requiring active feature development or official support, as the server is in maintenance mode.
  • 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 at least one LLM provider API key (Gemini, OpenAI, OpenRouter, or Anthropic) to function.
  • HTTP mode opens a network port; recommend restricting to loopback for security.
  • May modify client configuration files (e.g., Claude Desktop, Cursor, Windsurf, VS Code) during installation to add the server entry.
  • 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
  • Sending prompts and context to external LLM APIs; ensure sensitive data is not exposed.
  • HTTP mode with non-loopback access increases attack surface; v2.9.0 adds host validation and CORS restrictions but misconfiguration could cause outages.
  • Over-frequent `vibe_check` calls can slow down agent execution and increase costs; optimal dose is ~10-20% of steps.
  • 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, Cursor, Windsurf, VS CodeClaude Desktop, VS Code, Cursor
Tools519