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

DimensionMDN MCP ServerMDN's official experimental MCP server for web search, docs, and browser compatibility dataGitHub MCP ServerGitHub's official MCP server for managing repos, issues, PRs, and workflows via natural language
FMRS53 / 100 · D76 / 100 · B
Reliability8 / 2013 / 20
Security and permissions12 / 2014 / 20
Maintenance10 / 2018 / 20
Documentation11 / 2017 / 20
Setup experience12 / 2014 / 20
Best for
  • Web developers who need accurate, current web platform documentation
  • Coding agents aiming to reduce inaccuracies caused by outdated LLM training data
  • 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
  • Users who require strict data-privacy guarantees and want no query logging whatsoever
  • Production workflows requiring a stable, guaranteed-uptime API, since this server is experimental and may be withdrawn at any time
  • 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
  • The server itself does not require access to local files or a codebase
  • Using the remote server sends query content to Mozilla's servers
  • 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
  • The README states that query data is stored for analytics; it is not linked to identifying user information, but private details a user shares with the LLM could inadvertently be included in logged queries
  • As an experimental project, the server may be withdrawn at any time, making it unsuitable for dependencies requiring long-term stability
  • Use of the remote server requires compliance with Mozilla's Acceptable Use Policy
  • 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 CodeClaude Desktop, Claude Code, VS Code, Cursor, Windsurf, JetBrains IDEs, Zed, Amp
Tools015