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Compare MCP servers

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

DimensionCVE MCP ServerTurn Claude into a security intelligence analyst.Context7Upstash's official server providing up-to-date third-party library docs for AI coding assistantsGitHub MCP ServerGitHub's official MCP server for managing repos, issues, PRs, and workflows via natural language
FMRS50 / 100 · D80 / 100 · B76 / 100 · B
Reliability9 / 2014 / 2013 / 20
Security and permissions12 / 2016 / 2014 / 20
Maintenance8 / 2017 / 2018 / 20
Documentation10 / 2015 / 2017 / 20
Setup experience11 / 2018 / 2014 / 20
Best for
  • Security operations, vulnerability-management, and DevSecOps teams.
  • Claude users who need aggregated security data from multiple public sources.
  • Teams that want to start with key-free tools and add API credentials progressively.
  • Developers using fast-moving frameworks/libraries worried about the AI suggesting stale code
  • Scenarios wanting zero-config documentation lookup
  • Teams that want an AI assistant to directly operate on GitHub repos and collaboration workflows
  • Users already in the GitHub Copilot ecosystem who want a zero-deployment remote option
Not for
  • Active scanning or probing of infrastructure.
  • Workflows requiring writes to external systems or automated remediation.
  • Use cases requiring a local CVSS v4.0 calculator.
  • Looking up internal/private codebase documentation (Context7 targets publicly published open-source libraries)
  • Cases needing very high coverage of obscure, niche libraries (coverage depends on what Context7's platform has indexed)
  • Scenarios where you don't want the assistant to have write access to repos (enable only read-only toolsets)
  • Environments with strict network isolation for private repos that can't reach the official remote endpoint
Required permissions
  • Requires outbound HTTPS access to the relevant external APIs.
  • API keys are supplied through environment variables; some network, threat, and URL tools require specific credentials.
  • Stores responses in a local SQLite cache and writes an audit log.
  • urlscan_check can submit URLs for scanning; most other functions are read-oriented.
  • Usable without an API key (subject to a free-tier rate limit); CONTEXT7_API_KEY is an optional credential for higher quota
  • Read-only documentation lookup — no code execution or local filesystem access involved
  • A personal access token (PAT) or OAuth App token; effective scope depends on the token's own permissions
  • Enabling toolsets like actions/issues/pull_requests grants write access — request tokens on a least-privilege basis
Risks and side effects
  • CVE IDs, IPs, hashes, domains, and package names are sent to the relevant external APIs.
  • Provider rate limits, credential requirements, and data freshness can affect results.
  • The risk score is a composite indicator and does not replace human judgment; KEV entries are forced to at least CRITICAL/76.
  • The server does not actively scan, but URLScan submissions send URLs to that service.
  • The free tier has limited quota — high-frequency use may hit rate limits
  • Documentation content comes from Context7's platform index, so its accuracy and freshness depend on that platform's crawl cadence
  • Write toolsets (creating/merging PRs, triggering workflows) can cause accidental changes if the token is overscoped — try a read-only toolset first
  • In hosted mode, credentials travel via the Authorization header — make sure the client-to-api.githubcopilot.com connection is trusted
Supported clientsClaude Desktop, Claude CodeClaude Code, VS Code, Cursor, Cline, AmpClaude Desktop, Claude Code, VS Code, Cursor, Windsurf, JetBrains, Zed, Amp
Tools28215