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

DimensionChat On SteroidsLocal MCP workbench that puts ChatGPT's hands on your computerNPM Sentinel MCP ServerAI-powered NPM package analysis MCP server
FMRS51 / 100 · D79 / 100 · B
Reliability8 / 2012 / 20
Security and permissions11 / 2016 / 20
Maintenance10 / 2018 / 20
Documentation13 / 2018 / 20
Setup experience9 / 2015 / 20
Best for
  • Developers who want ChatGPT to actually edit and execute against a local codebase
  • Advanced users comfortable configuring a tunnel, a browser extension and per-capability permission switches in a beta product
  • Users on Windows 10/11, macOS 13 Ventura or newer, or a current desktop Linux with Chrome 116+ or Edge
  • Developers auditing NPM dependencies within AI workflows
  • Teams performing supply chain security assessments
  • Users of Claude Desktop, Cursor, or VS Code
Not for
  • Users who want a zero-config, officially hosted remote MCP service
  • ChatGPT workspaces that cannot enable Developer mode and custom MCP apps
  • Anyone needing a true OS-level sandbox: commands run with your logged-in user privileges and desktop control is not folder-scoped
  • Linux environments without a Secret Service keyring such as GNOME Keyring or KWallet
  • 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
  • File read/write limited to folders you approve in Settings → Workspace, with paths validated and canonicalised first
  • Command execution as your logged-in user, not folder-sandboxed
  • Desktop control (on by default on Windows, opt-in on macOS with Screen Recording and Accessibility grants) applying to the whole desktop
  • Browser extension running only on chatgpt.com, chat.openai.com and the app's loopback bridge, recording conversation state locally
  • OS secret storage: DPAPI on Windows, Keychain on macOS, libsecret or KWallet on Linux
  • Networking: a loopback-only MCP server behind a random secret path plus the tunnel you configure
  • 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
  • Command execution runs with normal user privileges and is application-level containment, not an OS sandbox; same-user filesystem races remain possible
  • With desktop control enabled, actions affect the entire machine, beyond your project folders
  • The extension observes ChatGPT's web UI and multi-agent mode opens and types into extra ChatGPT tabs; this is not a documented public automation API and your account's terms, rate limits and permitted-use policies may apply
  • Builds are not publisher-signed and macOS builds are not notarized, so SmartScreen, Gatekeeper or the browser will warn; verify SHA256SUMS.txt first
  • Any public tunnel URL should be treated as a password; leaking it exposes the local MCP server
  • Multi-agent mode and automatic generation consume additional ChatGPT or API quota
  • 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 clientsChatGPTClaude Desktop, VS Code, Cursor
Tools1219